Add ghcup whereis bindir and friends, fixes #221

.gitlab-ci.yml

@@ -14,7 +14,7 @@ variables:
 ############################################################
 
 .debian:
-  image: "registry.gitlab.haskell.org/ghc/ci-images/x86_64-linux-deb9:$DOCKER_REV"
+  image: "registry.gitlab.haskell.org/ghc/ci-images/x86_64-linux-deb10:$DOCKER_REV"
   tags:
     - x86_64-linux
   variables:
@@ -527,15 +527,9 @@ release:windows:
 hlint:
   stage: hlint
   extends:
-    - .alpine:64bit
-  before_script:
-    - ./.gitlab/before_script/linux/alpine/install_deps.sh
+    - .debian
   script:
-    - ./.gitlab/script/hlint.sh
-  variables:
-    GHC_VERSION: "8.10.6"
-    CABAL_VERSION: "3.4.0.0"
-    JSON_VERSION: "0.0.4"
+    - curl -sSL https://raw.github.com/ndmitchell/hlint/master/misc/run.sh | sh -s -- -r lib/ test/
   allow_failure: true
   artifacts:
     expire_in: 2 week

README.md

@@ -24,6 +24,7 @@ Similar in scope to [rustup](https://github.com/rust-lang-nursery/rustup.rs), [p
      * [Env variables](#env-variables)
      * [Installing custom bindists](#installing-custom-bindists)
      * [Isolated Installs](#isolated-installs)
+     * [CI](#ci)
      * [Tips and tricks](#tips-and-tricks)
    * [Design goals](#design-goals)
    * [How](#how)
@@ -190,6 +191,126 @@ Examples:-
 5. you can even compile ghc to an isolated location.  
    - `ghcup compile ghc -j 4 -v 9.0.1 -b 8.10.5 -i /home/username/my/dir/ghc` 
    ---  
+
+### CI
+
+On windows, ghcup can be installed automatically on a CI runner like so:
+
+```ps
+Set-ExecutionPolicy Bypass -Scope Process -Force;[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072;Invoke-Command -ScriptBlock ([ScriptBlock]::Create((Invoke-WebRequest https://www.haskell.org/ghcup/sh/bootstrap-haskell.ps1 -UseBasicParsing))) -ArgumentList $false,$true,$true,$false,$false,$false,$false,"C:\"
+```
+
+On linux/darwin/freebsd, run the following on your runner:
+
+```sh
+curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | BOOTSTRAP_HASKELL_NONINTERACTIVE=1 BOOTSTRAP_HASKELL_MINIMAL=1 sh
+```
+
+This will just install `ghcup` and on windows additionally `msys2`.
+
+#### Example github workflow
+
+On github workflows you can use https://github.com/haskell/actions/
+
+If you want to install ghcup manually though, here's an example config:
+
+```yml
+name: Haskell CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build-cabal:
+
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macOS-latest, windows-latest]
+        ghc: ['8.10.7', '9.0.1']
+        cabal: ['3.4.0.0']
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - if: matrix.os == 'windows-latest'
+      name: Install ghcup on windows
+      run: Set-ExecutionPolicy Bypass -Scope Process -Force;[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072;Invoke-Command -ScriptBlock ([ScriptBlock]::Create((Invoke-WebRequest https://www.haskell.org/ghcup/sh/bootstrap-haskell.ps1 -UseBasicParsing))) -ArgumentList $false,$true,$true,$false,$false,$false,$false,"C:\"
+
+    - if: matrix.os != 'windows-latest'
+      name: Install ghcup on non-windows
+      run: curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | BOOTSTRAP_HASKELL_NONINTERACTIVE=1 BOOTSTRAP_HASKELL_MINIMAL=1 sh
+
+    - if: matrix.os == 'windows-latest'
+      run: echo "/c/ghcup/bin" >> $GITHUB_PATH
+      shell: bash
+
+    - name: Install ghc/cabal
+      run: |
+        ghcup install ghc ${{ matrix.ghc }}
+        ghcup install cabal ${{ matrix.cabal }}
+      shell: bash
+
+    - name: Update cabal index
+      run: cabal update
+      shell: bash
+
+    - name: Build
+      run: cabal build --enable-tests --enable-benchmarks
+      shell: bash
+
+    - name: Run tests
+      run: cabal test
+      shell: bash
+
+    - name: Run benches
+      run: cabal bench
+      shell: bash
+
+  build-stack:
+    name: Stack ${{ matrix.stack }} ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macOS-latest, windows-latest]
+        stack: ['latest']
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - if: matrix.os == 'windows-latest'
+      name: Install ghcup on windows
+      run: Set-ExecutionPolicy Bypass -Scope Process -Force;[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072;Invoke-Command -ScriptBlock ([ScriptBlock]::Create((Invoke-WebRequest https://www.haskell.org/ghcup/sh/bootstrap-haskell.ps1 -UseBasicParsing))) -ArgumentList $false,$true,$true,$false,$false,$false,$false,"C:\"
+
+    - if: matrix.os != 'windows-latest'
+      name: Install ghcup on non-windows
+      run: curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | BOOTSTRAP_HASKELL_NONINTERACTIVE=1 BOOTSTRAP_HASKELL_MINIMAL=1 sh
+
+    - if: matrix.os == 'windows-latest'
+      run: echo "/c/ghcup/bin" >> $GITHUB_PATH
+      shell: bash
+
+    - name: Install stack
+      run: ghcup install stack ${{ matrix.stack }}
+      shell: bash
+
+    - name: Build
+      run: stack build
+      shell: bash
+
+    - name: Run tests
+      run: stack test
+      shell: bash
+
+    - name: Run benches
+      run: stack bench
+      shell: bash
+```
    
 ### Tips and tricks
 

app/ghcup-gen/Main.hs

@@ -11,22 +11,31 @@
 module Main where
 
 import           GHCup.Types
+import           GHCup.Types.Optics
+import           GHCup.Errors
+import           GHCup.Platform
+import           GHCup.Utils.Dirs
 import           GHCup.Types.JSON               ( )
-import           GHCup.Utils.Logger
 
+import           Control.Monad.Trans.Reader     ( runReaderT )
+import           Control.Monad.IO.Class
 import           Data.Char                      ( toLower )
 #if !MIN_VERSION_base(4,13,0)
 import           Data.Semigroup                 ( (<>) )
 #endif
 import           Options.Applicative     hiding ( style )
+import           Haskus.Utils.Variant.Excepts
 import           System.Console.Pretty
 import           System.Exit
-import           System.IO                      ( stdout )
+import           System.IO                      ( stderr )
 import           Text.Regex.Posix
 import           Validate
+import           Text.PrettyPrint.HughesPJClass ( prettyShow )
 
+import qualified Data.Text.IO                  as T
+import qualified Data.Text                     as T
 import qualified Data.ByteString               as B
-import qualified Data.Yaml                     as Y
+import qualified Data.YAML.Aeson               as Y
 
 
 data Options = Options
@@ -105,10 +114,27 @@ com = subparser
 
 main :: IO ()
 main = do
+  let loggerConfig = LoggerConfig { lcPrintDebug = True
+                                  , colorOutter  = T.hPutStr stderr
+                                  , rawOutter    = \_ -> pure ()
+                                  }
+  dirs <- liftIO getAllDirs
+  let leanAppstate = LeanAppState (Settings True False Never Curl True GHCupURL False) dirs defaultKeyBindings loggerConfig
+
+  pfreq <- (
+    flip runReaderT leanAppstate . runE @'[NoCompatiblePlatform, NoCompatibleArch, DistroNotFound] $ platformRequest
+    ) >>= \case
+            VRight r -> pure r
+            VLeft e -> do
+              flip runReaderT leanAppstate $ logError $ T.pack $ prettyShow e
+              liftIO $ exitWith (ExitFailure 2)
+
+  let appstate = AppState (Settings True False Never Curl True GHCupURL False) dirs defaultKeyBindings (GHCupInfo mempty mempty mempty) pfreq loggerConfig
+
   _ <- customExecParser (prefs showHelpOnError) (info (opts <**> helper) idm)
     >>= \Options {..} -> case optCommand of
-          ValidateYAML vopts -> withValidateYamlOpts vopts validate
-          ValidateTarballs vopts tarballFilter -> withValidateYamlOpts vopts (validateTarballs tarballFilter)
+          ValidateYAML vopts -> withValidateYamlOpts vopts (\dl m -> flip runReaderT appstate $ validate dl m)
+          ValidateTarballs vopts tarballFilter -> withValidateYamlOpts vopts (\dl m -> flip runReaderT appstate $ validateTarballs tarballFilter dl m)
   pure ()
 
  where
@@ -120,8 +146,8 @@ main = do
     ValidateYAMLOpts { vInput = Just (FileInput file) } ->
       B.readFile file >>= valAndExit f
   valAndExit f contents = do
-    (GHCupInfo _ av gt) <- case Y.decodeEither' contents of
+    (GHCupInfo _ av gt) <- case Y.decode1Strict contents of
       Right r -> pure r
-      Left  e -> die (color Red $ show e)
-    myLoggerT (LoggerConfig True (B.hPut stdout) (\_ -> pure ())) (f av gt)
+      Left  (_, e) -> die (color Red $ show e)
+    f av gt
       >>= exitWith

app/ghcup-gen/Validate.hs

@@ -12,11 +12,9 @@ module Validate where
 import           GHCup
 import           GHCup.Download
 import           GHCup.Errors
-import           GHCup.Platform
-import           GHCup.Types                  hiding ( LeanAppState (..) )
+import           GHCup.Types
 import           GHCup.Types.Optics
 import           GHCup.Utils
-import           GHCup.Utils.Logger
 import           GHCup.Utils.Version.QQ
 
 import           Codec.Archive
@@ -24,7 +22,6 @@ import           Control.Applicative
 import           Control.Exception.Safe
 import           Control.Monad
 import           Control.Monad.IO.Class
-import           Control.Monad.Logger
 import           Control.Monad.Reader.Class
 import           Control.Monad.Trans.Class      ( lift )
 import           Control.Monad.Trans.Reader     ( runReaderT )
@@ -39,12 +36,10 @@ import           Haskus.Utils.Variant.Excepts
 import           Optics
 import           System.FilePath
 import           System.Exit
-import           System.IO
 import           Text.ParserCombinators.ReadP
 import           Text.PrettyPrint.HughesPJClass ( prettyShow )
 import           Text.Regex.Posix
 
-import qualified Data.ByteString               as B
 import qualified Data.Map.Strict               as M
 import qualified Data.Text                     as T
 import qualified Data.Version                  as V
@@ -62,7 +57,7 @@ addError = do
   liftIO $ modifyIORef ref (+ 1)
 
 
-validate :: (Monad m, MonadLogger m, MonadThrow m, MonadIO m, MonadUnliftIO m)
+validate :: (Monad m, MonadReader env m, HasLog env, MonadThrow m, MonadIO m, MonadUnliftIO m)
          => GHCupDownloads
          -> M.Map GlobalTool DownloadInfo
          -> m ExitCode
@@ -89,23 +84,23 @@ validate dls _ = do
     if e > 0
       then pure $ ExitFailure e
       else do
-        lift $ $(logInfo) "All good"
+        lift $ logInfo "All good"
         pure ExitSuccess
  where
   checkHasRequiredPlatforms t v tags arch pspecs = do
     let v' = prettyVer v
         arch' = prettyShow arch
     when (notElem (Linux UnknownLinux) pspecs) $ do
-      lift $ $(logError) $
+      lift $ logError $
         "Linux UnknownLinux missing for for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack arch'
       addError
     when ((notElem Darwin pspecs) && arch == A_64) $ do
-      lift $ $(logError) $ "Darwin missing for for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack arch'
+      lift $ logError $ "Darwin missing for for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack arch'
       addError
-    when ((notElem FreeBSD pspecs) && arch == A_64) $ lift $ $(logWarn) $
+    when ((notElem FreeBSD pspecs) && arch == A_64) $ lift $ logWarn $
       "FreeBSD missing for for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack arch'
     when (notElem Windows pspecs && arch == A_64) $ do
-      lift $ $(logError) $ "Windows missing for for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack arch'
+      lift $ logError $ "Windows missing for for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack arch'
       addError
 
     -- alpine needs to be set explicitly, because
@@ -113,12 +108,12 @@ validate dls _ = do
     -- (although it could be static)
     when (notElem (Linux Alpine) pspecs) $
       case t of
-        GHCup | arch `elem` [A_64, A_32] -> lift ($(logError) $ "Linux Alpine missing for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack (prettyShow arch)) >> addError
+        GHCup | arch `elem` [A_64, A_32] -> lift (logError $ "Linux Alpine missing for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack (prettyShow arch)) >> addError
         Cabal | v > [vver|2.4.1.0|]
-              , arch `elem` [A_64, A_32] -> lift ($(logError) $ "Linux Alpine missing for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack (prettyShow arch)) >> addError
+              , arch `elem` [A_64, A_32] -> lift (logError $ "Linux Alpine missing for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack (prettyShow arch)) >> addError
         GHC | Latest `elem` tags || Recommended `elem` tags
-            , arch `elem` [A_64, A_32] -> lift ($(logError) $ "Linux Alpine missing for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack (prettyShow arch))
-        _ -> lift $ $(logWarn) $ "Linux Alpine missing for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack (prettyShow arch)
+            , arch `elem` [A_64, A_32] -> lift (logError $ "Linux Alpine missing for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack (prettyShow arch))
+        _ -> lift $ logWarn $ "Linux Alpine missing for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack (prettyShow arch)
 
   checkUniqueTags tool = do
     let allTags = join $ fmap _viTags $ M.elems $ availableToolVersions dls tool
@@ -138,7 +133,7 @@ validate dls _ = do
     case join nonUnique of
       [] -> pure ()
       xs -> do
-        lift $ $(logError) $ "Tags not unique for " <> T.pack (prettyShow tool) <> ": " <> T.pack (prettyShow xs)
+        lift $ logError $ "Tags not unique for " <> T.pack (prettyShow tool) <> ": " <> T.pack (prettyShow xs)
         addError
    where
     isUniqueTag Latest         = True
@@ -154,7 +149,7 @@ validate dls _ = do
       case [ x | (x,"") <- readP_to_S V.parseVersion (T.unpack . prettyVer $ v) ] of
         [_] -> pure ()
         _   -> do
-          lift $ $(logError) $ "GHC version " <> prettyVer v <> " is not valid"
+          lift $ logError $ "GHC version " <> prettyVer v <> " is not valid"
           addError
 
   -- a tool must have at least one of each mandatory tags
@@ -162,7 +157,7 @@ validate dls _ = do
     let allTags = join $ fmap _viTags $ M.elems $ availableToolVersions dls tool
     forM_ [Latest, Recommended] $ \t -> case elem t allTags of
       False -> do
-        lift $ $(logError) $ "Tag " <> T.pack (prettyShow t) <> " missing from " <> T.pack (prettyShow tool)
+        lift $ logError $ "Tag " <> T.pack (prettyShow t) <> " missing from " <> T.pack (prettyShow tool)
         addError
       True -> pure ()
 
@@ -171,7 +166,7 @@ validate dls _ = do
     let allTags = M.toList $ availableToolVersions dls GHC
     forM allTags $ \(ver, _viTags -> tags) -> case any isBase tags of
       False -> do
-        lift $ $(logError) $ "Base tag missing from GHC ver " <> prettyVer ver
+        lift $ logError $ "Base tag missing from GHC ver " <> prettyVer ver
         addError
       True -> pure ()
 
@@ -184,7 +179,10 @@ data TarballFilter = TarballFilter
   }
 
 validateTarballs :: ( Monad m
-                    , MonadLogger m
+                    , MonadReader env m
+                    , HasLog env
+                    , HasDirs env
+                    , HasSettings env
                     , MonadThrow m
                     , MonadIO m
                     , MonadUnliftIO m
@@ -199,45 +197,37 @@ validateTarballs :: ( Monad m
 validateTarballs (TarballFilter etool versionRegex) dls gt = do
   ref <- liftIO $ newIORef 0
 
-  flip runReaderT ref $ do
-     -- download/verify all tarballs
-    let dlis = either (const []) (\tool -> nubOrd $ dls ^.. each %& indices (maybe (const True) (==) tool) %> each %& indices (matchTest versionRegex . T.unpack . prettyVer) % (viSourceDL % _Just `summing` viArch % each % each % each)) etool
-    let gdlis = nubOrd $ gt ^.. each
-    let allDls = either (const gdlis) (const dlis) etool
-    when (null allDls) $ $(logError) "no tarballs selected by filter" *> addError
-    forM_ allDls downloadAll
+   -- download/verify all tarballs
+  let dlis = either (const []) (\tool -> nubOrd $ dls ^.. each %& indices (maybe (const True) (==) tool) %> each %& indices (matchTest versionRegex . T.unpack . prettyVer) % (viSourceDL % _Just `summing` viArch % each % each % each)) etool
+  let gdlis = nubOrd $ gt ^.. each
+  let allDls = either (const gdlis) (const dlis) etool
+  when (null allDls) $ logError "no tarballs selected by filter" *> (flip runReaderT ref addError)
+  forM_ allDls (downloadAll ref)
 
-    -- exit
-    e <- liftIO $ readIORef ref
-    if e > 0
-      then pure $ ExitFailure e
-      else do
-        lift $ $(logInfo) "All good"
-        pure ExitSuccess
+  -- exit
+  e <- liftIO $ readIORef ref
+  if e > 0
+    then pure $ ExitFailure e
+    else do
+      logInfo "All good"
+      pure ExitSuccess
 
  where
-  runLogger = myLoggerT LoggerConfig { lcPrintDebug = True
-                                     , colorOutter  = B.hPut stderr
-                                     , rawOutter    = \_ -> pure ()
-                                     }
-  downloadAll dli = do
-    dirs <- liftIO getAllDirs
-
-    pfreq <- (
-      runLogger . runE @'[NoCompatiblePlatform, NoCompatibleArch, DistroNotFound] . liftE $ platformRequest
-      ) >>= \case
-              VRight r -> pure r
-              VLeft e -> do
-                lift $ runLogger
-                  ($(logError) $ T.pack $ prettyShow e)
-                liftIO $ exitWith (ExitFailure 2)
-
-    let appstate = AppState (Settings True False Never Curl True GHCupURL False) dirs defaultKeyBindings (GHCupInfo mempty mempty mempty) pfreq
-
-    r <-
-      runLogger
-      . flip runReaderT appstate
-      . runResourceT
+  downloadAll :: ( MonadUnliftIO m
+                 , MonadIO m
+                 , MonadReader env m
+                 , HasLog env
+                 , HasDirs env
+                 , HasSettings env
+                 , MonadCatch m
+                 , MonadMask m
+                 , MonadThrow m
+                 )
+              => IORef Int
+              -> DownloadInfo
+              -> m ()
+  downloadAll ref dli = do
+    r <- runResourceT
       . runE @'[DigestError
                , DownloadFailed
                , UnknownArchive
@@ -263,26 +253,26 @@ validateTarballs (TarballFilter etool versionRegex) dls gt = do
       VRight (Just basePath) -> do
         case _dlSubdir dli of
           Just (RealDir prel) -> do
-            lift $ $(logInfo)
+            logInfo
               $ " verifying subdir: " <> T.pack prel
             when (basePath /= prel) $ do
-              lift $ $(logError) $
+              logError $
                 "Subdir doesn't match: expected " <> T.pack prel <> ", got " <> T.pack basePath
-              addError
+              (flip runReaderT ref addError)
           Just (RegexDir regexString) -> do
-            lift $ $(logInfo) $
+            logInfo $
               "verifying subdir (regex): " <> T.pack regexString
             let regex = makeRegexOpts
                   compIgnoreCase
                   execBlank
                   regexString
             when (not (match regex basePath)) $ do
-              lift $ $(logError) $
+              logError $
                 "Subdir doesn't match: expected regex " <> T.pack regexString <> ", got " <> T.pack basePath
-              addError
+              (flip runReaderT ref addError)
           Nothing -> pure ()
       VRight Nothing -> pure ()
       VLeft  e -> do
-        lift $ $(logError) $
+        logError $
           "Could not download (or verify hash) of " <> T.pack (show dli) <> ", Error was: " <> T.pack (prettyShow e)
-        addError
+        (flip runReaderT ref addError)

app/ghcup/BrickMain.hs

@@ -13,11 +13,11 @@ module BrickMain where
 import           GHCup
 import           GHCup.Download
 import           GHCup.Errors
+import           GHCup.Types.Optics  hiding ( getGHCupInfo )
 import           GHCup.Types         hiding ( LeanAppState(..) )
 import           GHCup.Utils
 import           GHCup.Utils.Prelude ( decUTF8Safe )
 import           GHCup.Utils.File
-import           GHCup.Utils.Logger
 
 import           Brick
 import           Brick.Widgets.Border
@@ -29,7 +29,6 @@ import           Brick.Widgets.List             ( listSelectedFocusedAttr
                                                 )
 import           Codec.Archive
 import           Control.Exception.Safe
-import           Control.Monad.Logger
 import           Control.Monad.Reader
 import           Control.Monad.Trans.Except
 import           Control.Monad.Trans.Resource
@@ -417,12 +416,8 @@ install' :: (MonadReader AppState m, MonadIO m, MonadThrow m, MonadFail m, Monad
 install' _ (_, ListResult {..}) = do
   AppState { ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- ask
 
-  l        <- liftIO $ readIORef logger'
-  let runLogger = myLoggerT l
-
   let run =
-        runLogger
-          . runResourceT
+        runResourceT
           . runE
             @'[ AlreadyInstalled
               , ArchiveResult
@@ -462,7 +457,7 @@ install' _ (_, ListResult {..}) = do
     >>= \case
           VRight vi                         -> do
             forM_ (_viPostInstall =<< vi) $ \msg ->
-              myLoggerT l $ $(logInfo) msg
+              logInfo msg
             pure $ Right ()
           VLeft  (V (AlreadyInstalled _ _)) -> pure $ Right ()
           VLeft (V NoUpdate) -> pure $ Right ()
@@ -473,12 +468,9 @@ install' _ (_, ListResult {..}) = do
 set' :: BrickState -> (Int, ListResult) -> IO (Either String ())
 set' _ (_, ListResult {..}) = do
   settings <- readIORef settings'
-  l        <- readIORef logger'
-  let runLogger = myLoggerT l
 
   let run =
-        runLogger
-          . flip runReaderT settings
+        flip runReaderT settings
           . runE @'[FileDoesNotExistError , NotInstalled , TagNotFound]
 
   run (do
@@ -501,9 +493,7 @@ del' :: (MonadReader AppState m, MonadIO m, MonadFail m, MonadMask m, MonadUnlif
 del' _ (_, ListResult {..}) = do
   AppState { ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- ask
 
-  l <- liftIO $ readIORef logger'
-  let runLogger = myLoggerT l
-  let run = myLoggerT l . runE @'[NotInstalled]
+  let run = runE @'[NotInstalled]
 
   run (do
       let vi = getVersionInfo lVer lTool dls
@@ -517,7 +507,7 @@ del' _ (_, ListResult {..}) = do
     >>= \case
           VRight vi -> do
             forM_ (join $ fmap _viPostRemove vi) $ \msg ->
-              runLogger $ $(logInfo) msg
+              logInfo msg
             pure $ Right ()
           VLeft  e -> pure $ Left (prettyShow e)
 
@@ -546,6 +536,10 @@ settings' :: IORef AppState
 {-# NOINLINE settings' #-}
 settings' = unsafePerformIO $ do
   dirs <- getAllDirs
+  let loggerConfig = LoggerConfig { lcPrintDebug = False
+                                  , colorOutter  = \_ -> pure ()
+                                  , rawOutter    = \_ -> pure ()
+                                  }
   newIORef $ AppState (Settings { cache      = True
                                 , noVerify   = False
                                 , keepDirs   = Never
@@ -559,27 +553,14 @@ settings' = unsafePerformIO $ do
                       defaultKeyBindings
                       (GHCupInfo mempty mempty mempty)
                       (PlatformRequest A_64 Darwin Nothing)
+                      loggerConfig
 
 
 
-logger' :: IORef LoggerConfig
-{-# NOINLINE logger' #-}
-logger' = unsafePerformIO
-  (newIORef $ LoggerConfig { lcPrintDebug = False
-                           , colorOutter  = \_ -> pure ()
-                           , rawOutter    = \_ -> pure ()
-                           }
-  )
-
-
 brickMain :: AppState
-          -> LoggerConfig
           -> IO ()
-brickMain s l = do
+brickMain s = do
   writeIORef settings' s
-  -- logger interpreter
-  writeIORef logger'   l
-  let runLogger = myLoggerT l
 
   no_color <- isJust <$> lookupEnv "NO_COLOR"
 
@@ -596,7 +577,7 @@ brickMain s l = do
           )
         $> ()
     Left e -> do
-      runLogger ($(logError) $ "Error building app state: " <> T.pack (show e))
+      flip runReaderT s $ logError $ "Error building app state: " <> T.pack (show e)
       exitWith $ ExitFailure 2
 
 
@@ -607,12 +588,9 @@ defaultAppSettings = BrickSettings { showAllVersions = False, showAllTools = Fal
 getGHCupInfo :: IO (Either String GHCupInfo)
 getGHCupInfo = do
   settings <- readIORef settings'
-  l        <- readIORef logger'
-  let runLogger = myLoggerT l
 
   r <-
-    runLogger
-    . flip runReaderT settings
+    flip runReaderT settings
     . runE @'[JSONError , DownloadFailed , FileDoesNotExistError]
     $ liftE
     $ getDownloadsF
@@ -625,14 +603,11 @@ getGHCupInfo = do
 getAppData :: Maybe GHCupInfo
            -> IO (Either String BrickData)
 getAppData mgi = runExceptT $ do
-  l        <- liftIO $ readIORef logger'
-  let runLogger = myLoggerT l
-
   r <- ExceptT $ maybe getGHCupInfo (pure . Right) mgi
   liftIO $ modifyIORef settings' (\s -> s { ghcupInfo = r })
   settings <- liftIO $ readIORef settings'
 
-  runLogger . flip runReaderT settings $ do
+  flip runReaderT settings $ do
     lV <- listVersions Nothing Nothing
     pure $ BrickData (reverse lV)
 

app/ghcup/Main.hs

@@ -30,6 +30,7 @@ import           GHCup.Utils.Prelude
 import           GHCup.Utils.String.QQ
 import           GHCup.Version
 
+import           Cabal.Plan ( findPlanJson, SearchPlanJson(..) )
 import           Codec.Archive
 import           Control.Concurrent
 import           Control.Concurrent.Async
@@ -39,9 +40,10 @@ import           Control.Exception.Safe
 #if !MIN_VERSION_base(4,13,0)
 import           Control.Monad.Fail             ( MonadFail )
 #endif
-import           Control.Monad.Logger
 import           Control.Monad.Reader
 import           Control.Monad.Trans.Resource
+import           Data.Aeson                     ( decodeStrict', Value )
+import           Data.Aeson.Encode.Pretty       ( encodePretty )
 import           Data.Bifunctor
 import           Data.Char
 import           Data.Either
@@ -75,8 +77,7 @@ import qualified Data.Map.Strict               as M
 import qualified Data.Text                     as T
 import qualified Data.Text.IO                  as T
 import qualified Data.Text.Encoding            as E
-import qualified Data.Yaml                     as Y
-import qualified Data.Yaml.Pretty              as YP
+import qualified Data.YAML.Aeson               as Y
 import qualified Text.Megaparsec               as MP
 import qualified Text.Megaparsec.Char          as MPC
 
@@ -204,6 +205,11 @@ data ChangeLogOptions = ChangeLogOptions
 
 
 data WhereisCommand = WhereisTool Tool (Maybe ToolVersion)
+                    | WhereisBaseDir
+                    | WhereisBinDir
+                    | WhereisCacheDir
+                    | WhereisLogsDir
+                    | WhereisConfDir
 
 data WhereisOptions = WhereisOptions {
    directory :: Bool
@@ -832,7 +838,8 @@ configP = subparser
 
 whereisP :: Parser WhereisCommand
 whereisP = subparser
-  (  command
+  (commandGroup "Tools locations:" <> 
+    command
       "ghc"
       (WhereisTool GHC <$> info
         ( optional (toolVersionArgument Nothing (Just GHC)) <**> helper )
@@ -867,6 +874,37 @@ whereisP = subparser
      command
       "ghcup"
       (WhereisTool GHCup <$> info ( (pure Nothing) <**> helper ) ( progDesc "Get ghcup location" ))
+    ) <|> subparser ( commandGroup "Directory locations:"
+      <>
+     command
+      "basedir"
+      (info (pure WhereisBaseDir <**> helper)
+            ( progDesc "Get ghcup base directory location" )
+      )
+      <>
+     command
+      "bindir"
+      (info (pure WhereisBinDir <**> helper)
+            ( progDesc "Get ghcup binary directory location" )
+      )
+      <>
+     command
+      "cachedir"
+      (info (pure WhereisCacheDir <**> helper)
+            ( progDesc "Get ghcup cache directory location" )
+      )
+      <>
+     command
+      "logsdir"
+      (info (pure WhereisLogsDir <**> helper)
+            ( progDesc "Get ghcup logs directory location" )
+      )
+      <>
+     command
+      "confdir"
+      (info (pure WhereisConfDir <**> helper)
+            ( progDesc "Get ghcup config directory location" )
+      )
   )
  where
   whereisGHCFooter = [s|Discussion:
@@ -1096,19 +1134,18 @@ versionArgument criteria tool = argument (eitherReader tVersionEither) (metavar
 tagCompleter :: Tool -> [String] -> Completer
 tagCompleter tool add = listIOCompleter $ do
   dirs' <- liftIO getAllDirs
-  let appState = LeanAppState
-        (Settings True False Never Curl False GHCupURL True)
-        dirs'
-        defaultKeyBindings
-
   let loggerConfig = LoggerConfig
         { lcPrintDebug = False
         , colorOutter  = mempty
         , rawOutter    = mempty
         }
-  let runLogger = myLoggerT loggerConfig
+  let appState = LeanAppState
+        (Settings True False Never Curl False GHCupURL True)
+        dirs'
+        defaultKeyBindings
+        loggerConfig
 
-  mGhcUpInfo <- runLogger . flip runReaderT appState . runE $ getDownloadsF
+  mGhcUpInfo <- flip runReaderT appState . runE $ getDownloadsF
   case mGhcUpInfo of
     VRight ghcupInfo -> do
       let allTags = filter (\t -> t /= Old)
@@ -1128,14 +1165,14 @@ versionCompleter criteria tool = listIOCompleter $ do
         , colorOutter  = mempty
         , rawOutter    = mempty
         }
-  let runLogger = myLoggerT loggerConfig
-      settings = Settings True False Never Curl False GHCupURL True
+  let settings = Settings True False Never Curl False GHCupURL True
   let leanAppState = LeanAppState
                    settings
                    dirs'
                    defaultKeyBindings
-  mpFreq <- runLogger . flip runReaderT leanAppState . runE $ platformRequest
-  mGhcUpInfo <- runLogger . flip runReaderT leanAppState . runE $ getDownloadsF
+                   loggerConfig
+  mpFreq <- flip runReaderT leanAppState . runE $ platformRequest
+  mGhcUpInfo <- flip runReaderT leanAppState . runE $ getDownloadsF
   forFold mpFreq $ \pfreq -> do
     forFold mGhcUpInfo $ \ghcupInfo -> do
       let appState = AppState
@@ -1144,8 +1181,9 @@ versionCompleter criteria tool = listIOCompleter $ do
             defaultKeyBindings
             ghcupInfo
             pfreq
+            loggerConfig
 
-          runEnv = runLogger . flip runReaderT appState
+          runEnv = flip runReaderT appState
 
       installedVersions <- runEnv $ listVersions (Just tool) criteria
       return $ T.unpack . prettyVer . lVer <$> installedVersions
@@ -1316,7 +1354,7 @@ toSettings options = do
 
 updateSettings :: Monad m => UTF8.ByteString -> Settings -> Excepts '[JSONError] m Settings
 updateSettings config settings = do
-  settings' <- lE' JSONDecodeError . first show . Y.decodeEither' $ config
+  settings' <- lE' JSONDecodeError . first snd . Y.decode1Strict $ config
   pure $ mergeConf settings' settings
   where
    mergeConf :: UserSettings -> Settings -> Settings
@@ -1363,11 +1401,19 @@ describe_result = $( LitE . StringL <$>
                      )
                    )
 
+plan_json :: String
+plan_json = $( LitE . StringL <$>
+                     runIO (handleIO (\_ -> pure "") $ do
+                             fp <- findPlanJson (ProjectRelativeToDir ".")
+                             c <- B.readFile fp
+                             (Just res) <- pure $ decodeStrict' @Value c
+                             pure $ T.unpack $ decUTF8Safe' $ encodePretty res
+                     )
+                   )
+
 formatConfig :: UserSettings -> String
 formatConfig settings
-  = UTF8.toString . YP.encodePretty yamlConfig $ settings
- where
-  yamlConfig = YP.setConfCompare compare YP.defConfig
+  = UTF8.toString . Y.encode1Strict $ settings
 
 main :: IO ()
 main = do
@@ -1381,6 +1427,9 @@ main = do
           (head . lines $ describe_result)
         )
         (long "version" <> help "Show version" <> hidden)
+  let planJson = infoOption
+        plan_json
+        (long "plan-json" <> help "Show the build-time configuration" <> internal)
   let numericVersionHelp = infoOption
         numericVer
         (  long "numeric-version"
@@ -1408,7 +1457,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
 
   customExecParser
       (prefs showHelpOnError)
-      (info (opts <**> helper <**> versionHelp <**> numericVersionHelp <**> listCommands)
+      (info (opts <**> helper <**> versionHelp <**> numericVersionHelp <**> planJson <**> listCommands)
             (footerDoc (Just $ text main_footer))
       )
     >>= \opt@Options {..} -> do
@@ -1419,18 +1468,20 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
 
           (settings, keybindings) <- toSettings opt
 
+
           -- logger interpreter
-          logfile <- flip runReaderT dirs $ initGHCupFileLogging
+          logfile <- flip runReaderT dirs initGHCupFileLogging
           let loggerConfig = LoggerConfig
                 { lcPrintDebug = verbose settings
-                , colorOutter  = B.hPut stderr
+                , colorOutter  = T.hPutStr stderr
                 , rawOutter    =
                     case optCommand of
                       Nuke -> \_ -> pure ()
-                      _ -> B.appendFile logfile
+                      _ -> T.appendFile logfile
                 }
-          let runLogger = myLoggerT loggerConfig
-          let siletRunLogger = myLoggerT loggerConfig { colorOutter = \_ -> pure () }
+          let leanAppstate = LeanAppState settings dirs keybindings loggerConfig
+          let runLogger = flip runReaderT leanAppstate
+          let siletRunLogger = flip runReaderT (leanAppstate { loggerConfig = loggerConfig { colorOutter = \_ -> pure () } } :: LeanAppState)
 
 
           -------------------------
@@ -1438,7 +1489,6 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
           -------------------------
 
 
-          let leanAppstate = LeanAppState settings dirs keybindings
               appState = do
                 pfreq <- (
                   runLogger . runE @'[NoCompatiblePlatform, NoCompatibleArch, DistroNotFound] . liftE $ platformRequest
@@ -1446,12 +1496,11 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                           VRight r -> pure r
                           VLeft e -> do
                             runLogger
-                              ($(logError) $ T.pack $ prettyShow e)
+                              (logError $ T.pack $ prettyShow e)
                             exitWith (ExitFailure 2)
 
                 ghcupInfo <-
-                  ( runLogger
-                    . flip runReaderT leanAppstate
+                  ( flip runReaderT leanAppstate
                     . runE @'[JSONError , DownloadFailed, FileDoesNotExistError]
                     $ liftE
                     $ getDownloadsF
@@ -1460,12 +1509,12 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                           VRight r -> pure r
                           VLeft  e -> do
                             runLogger
-                              ($(logError) $ T.pack $ prettyShow e)
+                              (logError $ T.pack $ prettyShow e)
                             exitWith (ExitFailure 2)
-                let s' = AppState settings dirs keybindings ghcupInfo pfreq
+                let s' = AppState settings dirs keybindings ghcupInfo pfreq loggerConfig
 
-                race_ (liftIO $ runLogger $ flip runReaderT dirs $ cleanupTrash)
-                      (threadDelay 5000000 >> runLogger ($(logWarn) $ "Killing cleanup thread (exceeded 5s timeout)... please remove leftover files in " <> T.pack recycleDir <> " manually"))
+                race_ (liftIO $ flip runReaderT s' cleanupTrash)
+                      (threadDelay 5000000 >> runLogger (logWarn $ "Killing cleanup thread (exceeded 5s timeout)... please remove leftover files in " <> T.pack recycleDir <> " manually"))
 
                 case optCommand of
                   Nuke -> pure ()
@@ -1477,7 +1526,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                   Interactive -> pure ()
 #endif
                   _ -> lookupEnv "GHCUP_SKIP_UPDATE_CHECK" >>= \case
-                         Nothing -> runLogger $ flip runReaderT s' $ checkForUpdates
+                         Nothing -> flip runReaderT s' checkForUpdates
                          Just _ -> pure ()
 
                 -- TODO: always run for windows
@@ -1485,7 +1534,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                   VRight _ -> pure ()
                   VLeft e -> do
                     runLogger
-                      ($(logError) $ T.pack $ prettyShow e)
+                      (logError $ T.pack $ prettyShow e)
                     exitWith (ExitFailure 30)
                 pure s'
 
@@ -1510,8 +1559,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
 
 
           let runInstTool' appstate' mInstPlatform =
-                runLogger
-                  . flip runReaderT (maybe appstate' (\x -> appstate'{ pfreq = x } :: AppState) mInstPlatform)
+                  flip runReaderT (maybe appstate' (\x -> appstate'{ pfreq = x } :: AppState) mInstPlatform)
                   . runResourceT
                   . runE
                     @'[ AlreadyInstalled
@@ -1539,8 +1587,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
 
           let
             runLeanSetGHC =
-              runLogger
-                . runLeanAppState
+                runLeanAppState
                 . runE
                   @'[ FileDoesNotExistError
                     , NotInstalled
@@ -1550,8 +1597,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                     ]
 
             runSetGHC =
-              runLogger
-                . runAppState
+                runAppState
                 . runE
                   @'[ FileDoesNotExistError
                     , NotInstalled
@@ -1562,8 +1608,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
 
           let
             runLeanSetCabal =
-              runLogger
-                . runLeanAppState
+                runLeanAppState
                 . runE
                   @'[ NotInstalled
                     , TagNotFound
@@ -1572,8 +1617,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                     ]
 
             runSetCabal =
-              runLogger
-                . runAppState
+                runAppState
                 . runE
                   @'[ NotInstalled
                     , TagNotFound
@@ -1583,8 +1627,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
 
           let
             runSetHLS =
-              runLogger
-                . runAppState
+                runAppState
                 . runE
                   @'[ NotInstalled
                     , TagNotFound
@@ -1593,8 +1636,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                     ]
 
             runLeanSetHLS =
-              runLogger
-                . runLeanAppState
+                runLeanAppState
                 . runE
                   @'[ NotInstalled
                     , TagNotFound
@@ -1602,23 +1644,21 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                     , NoToolVersionSet
                     ]
 
-          let runListGHC = runLogger . runAppState
+          let runListGHC = runAppState
 
           let runRm =
-                runLogger . runAppState . runE @'[NotInstalled]
+                runAppState . runE @'[NotInstalled]
 
           let runNuke s' =
-                runLogger . flip runReaderT s' . runE @'[NotInstalled]
+                flip runReaderT s' . runE @'[NotInstalled]
 
           let runDebugInfo =
-                runLogger
-                  . runAppState
+                  runAppState
                   . runE
                     @'[NoCompatiblePlatform , NoCompatibleArch , DistroNotFound]
 
           let runCompileGHC =
-                runLogger
-                  . runAppState
+                  runAppState
                   . runResourceT
                   . runE
                     @'[ AlreadyInstalled
@@ -1638,10 +1678,9 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
 
           let
             runLeanWhereIs =
-              runLogger
                 -- Don't use runLeanAppState here, which is disabled on windows.
                 -- This is the only command on all platforms that doesn't need full appstate.
-                . flip runReaderT leanAppstate
+                flip runReaderT leanAppstate
                 . runE
                   @'[ NotInstalled
                     , NoToolVersionSet
@@ -1650,8 +1689,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                     ]
 
             runWhereIs =
-              runLogger
-                . runAppState
+                runAppState
                 . runE
                   @'[ NotInstalled
                     , NoToolVersionSet
@@ -1660,8 +1698,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                     ]
 
           let runUpgrade =
-                runLogger
-                  . runAppState
+                  runAppState
                   . runResourceT
                   . runE
                     @'[ DigestError
@@ -1673,8 +1710,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                       ]
 
           let runPrefetch =
-                runLogger
-                  . runAppState
+                  runAppState
                   . runResourceT
                   . runE
                     @'[ TagNotFound
@@ -1712,25 +1748,25 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                   )
                     >>= \case
                           VRight vi -> do
-                            runLogger $ $(logInfo) "GHC installation successful"
+                            runLogger $ logInfo "GHC installation successful"
                             forM_ (_viPostInstall =<< vi) $ \msg ->
-                              runLogger $ $(logInfo) msg
+                              runLogger $ logInfo msg
                             pure ExitSuccess
                           VLeft (V (AlreadyInstalled _ v)) -> do
-                            runLogger $ $(logWarn) $
+                            runLogger $ logWarn $
                               "GHC ver " <> prettyVer v <> " already installed; if you really want to reinstall it, you may want to run 'ghcup rm ghc " <> prettyVer v <> "' first"
                             pure ExitSuccess
                           VLeft err@(V (BuildFailed tmpdir _)) -> do
                             case keepDirs settings of
-                              Never -> myLoggerT loggerConfig $ ($(logError) $ T.pack $ prettyShow err)
-                              _ -> myLoggerT loggerConfig $ ($(logError) $ T.pack (prettyShow err) <> "\n" <>
+                              Never -> runLogger $ (logError $ T.pack $ prettyShow err)
+                              _ -> runLogger $ (logError $ T.pack (prettyShow err) <> "\n" <>
                                 "Check the logs at " <> T.pack logsDir <> " and the build directory " <> T.pack tmpdir <> " for more clues." <> "\n" <>
                                 "Make sure to clean up " <> T.pack tmpdir <> " afterwards.")
                             pure $ ExitFailure 3
                           VLeft e -> do
                             runLogger $ do
-                              $(logError) $ T.pack $ prettyShow e
-                              $(logError) $ "Also check the logs in " <> T.pack logsDir
+                              logError $ T.pack $ prettyShow e
+                              logError $ "Also check the logs in " <> T.pack logsDir
                             pure $ ExitFailure 3
 
 
@@ -1752,18 +1788,18 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                   )
                   >>= \case
                         VRight vi -> do
-                          runLogger $ $(logInfo) "Cabal installation successful"
+                          runLogger $ logInfo "Cabal installation successful"
                           forM_ (_viPostInstall =<< vi) $ \msg ->
-                            runLogger $ $(logInfo) msg
+                            runLogger $ logInfo msg
                           pure ExitSuccess
                         VLeft (V (AlreadyInstalled _ v)) -> do
-                          runLogger $ $(logWarn) $
+                          runLogger $ logWarn $
                             "Cabal ver " <> prettyVer v <> " already installed; if you really want to reinstall it, you may want to run 'ghcup rm cabal " <> prettyVer v <> "' first"
                           pure ExitSuccess
                         VLeft e -> do
                           runLogger $ do
-                            $(logError) $ T.pack $ prettyShow e
-                            $(logError) $ "Also check the logs in " <> T.pack logsDir
+                            logError $ T.pack $ prettyShow e
+                            logError $ "Also check the logs in " <> T.pack logsDir
                           pure $ ExitFailure 4
 
           let installHLS InstallOptions{..} =
@@ -1784,12 +1820,12 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                   )
                   >>= \case
                         VRight vi -> do
-                          runLogger $ $(logInfo) "HLS installation successful"
+                          runLogger $ logInfo "HLS installation successful"
                           forM_ (_viPostInstall =<< vi) $ \msg ->
-                            runLogger $ $(logInfo) msg
+                            runLogger $ logInfo msg
                           pure ExitSuccess
                         VLeft (V (AlreadyInstalled _ v)) -> do
-                          runLogger $ $(logWarn) $
+                          runLogger $ logWarn $
                               "HLS ver "
                             <> prettyVer v
                             <> " already installed; if you really want to reinstall it, you may want to run 'ghcup rm hls "
@@ -1798,8 +1834,8 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                           pure ExitSuccess
                         VLeft e -> do
                           runLogger $ do
-                            $(logError) $ T.pack $ prettyShow e
-                            $(logError) $ "Also check the logs in " <> T.pack logsDir
+                            logError $ T.pack $ prettyShow e
+                            logError $ "Also check the logs in " <> T.pack logsDir
                           pure $ ExitFailure 4
 
           let installStack InstallOptions{..} =
@@ -1820,18 +1856,18 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                   )
                   >>= \case
                         VRight vi -> do
-                          runLogger $ $(logInfo) "Stack installation successful"
+                          runLogger $ logInfo "Stack installation successful"
                           forM_ (_viPostInstall =<< vi) $ \msg ->
-                            runLogger $ $(logInfo) msg
+                            runLogger $ logInfo msg
                           pure ExitSuccess
                         VLeft (V (AlreadyInstalled _ v)) -> do
-                          runLogger $ $(logWarn) $
+                          runLogger $ logWarn $
                             "Stack ver " <> prettyVer v <> " already installed; if you really want to reinstall it, you may want to run 'ghcup rm stack " <> prettyVer v <> "' first"
                           pure ExitSuccess
                         VLeft e -> do
                           runLogger $ do
-                            $(logError) $ T.pack $ prettyShow e
-                            $(logError) $ "Also check the logs in " <> T.pack logsDir
+                            logError $ T.pack $ prettyShow e
+                            logError $ "Also check the logs in " <> T.pack logsDir
                           pure $ ExitFailure 4
 
 
@@ -1845,11 +1881,11 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                   >>= \case
                         VRight GHCTargetVersion{..} -> do
                           runLogger
-                            $ $(logInfo) $
+                            $ logInfo $
                                 "GHC " <> prettyVer _tvVersion <> " successfully set as default version" <> maybe "" (" for cross target " <>) _tvTarget
                           pure ExitSuccess
                         VLeft e -> do
-                          runLogger $ $(logError) $ T.pack $ prettyShow e
+                          runLogger $ logError $ T.pack $ prettyShow e
                           pure $ ExitFailure 5
 
           let setCabal' SetOptions{ sToolVer } =
@@ -1863,11 +1899,11 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                   >>= \case
                         VRight GHCTargetVersion{..} -> do
                           runLogger
-                            $ $(logInfo) $
+                            $ logInfo $
                                 "Cabal " <> prettyVer _tvVersion <> " successfully set as default version"
                           pure ExitSuccess
                         VLeft  e -> do
-                          runLogger $ $(logError) $ T.pack $ prettyShow e
+                          runLogger $ logError $ T.pack $ prettyShow e
                           pure $ ExitFailure 14
 
           let setHLS' SetOptions{ sToolVer } =
@@ -1881,11 +1917,11 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                   >>= \case
                         VRight GHCTargetVersion{..} -> do
                           runLogger
-                            $ $(logInfo) $
+                            $ logInfo $
                                 "HLS " <> prettyVer _tvVersion <> " successfully set as default version"
                           pure ExitSuccess
                         VLeft  e -> do
-                          runLogger $ $(logError) $ T.pack $ prettyShow e
+                          runLogger $ logError $ T.pack $ prettyShow e
                           pure $ ExitFailure 14
 
           let setStack' SetOptions{ sToolVer } =
@@ -1899,11 +1935,11 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                   >>= \case
                         VRight GHCTargetVersion{..} -> do
                           runLogger
-                            $ $(logInfo) $
+                            $ logInfo $
                                 "Stack " <> prettyVer _tvVersion <> " successfully set as default version"
                           pure ExitSuccess
                         VLeft  e -> do
-                          runLogger $ $(logError) $ T.pack $ prettyShow e
+                          runLogger $ logError $ T.pack $ prettyShow e
                           pure $ ExitFailure 14
 
           let rmGHC' RmOptions{..} =
@@ -1916,10 +1952,10 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                   >>= \case
                         VRight vi -> do
                           forM_ (_viPostRemove =<< vi) $ \msg ->
-                            runLogger $ $(logInfo) msg
+                            runLogger $ logInfo msg
                           pure ExitSuccess
                         VLeft  e -> do
-                          runLogger $ $(logError) $ T.pack $ prettyShow e
+                          runLogger $ logError $ T.pack $ prettyShow e
                           pure $ ExitFailure 7
 
           let rmCabal' tv =
@@ -1932,10 +1968,10 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                   >>= \case
                         VRight vi -> do
                           forM_ (_viPostRemove =<< vi) $ \msg ->
-                            runLogger $ $(logInfo) msg
+                            runLogger $ logInfo msg
                           pure ExitSuccess
                         VLeft  e -> do
-                          runLogger $ $(logError) $ T.pack $ prettyShow e
+                          runLogger $ logError $ T.pack $ prettyShow e
                           pure $ ExitFailure 15
 
           let rmHLS' tv =
@@ -1948,10 +1984,10 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                   >>= \case
                         VRight vi -> do
                           forM_ (_viPostRemove =<< vi) $ \msg ->
-                            runLogger $ $(logInfo) msg
+                            runLogger $ logInfo msg
                           pure ExitSuccess
                         VLeft  e -> do
-                          runLogger $ $(logError) $ T.pack $ prettyShow e
+                          runLogger $ logError $ T.pack $ prettyShow e
                           pure $ ExitFailure 15
 
           let rmStack' tv =
@@ -1964,31 +2000,31 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                   >>= \case
                         VRight vi -> do
                           forM_ (_viPostRemove =<< vi) $ \msg ->
-                            runLogger $ $(logInfo) msg
+                            runLogger $ logInfo msg
                           pure ExitSuccess
                         VLeft  e -> do
-                          runLogger $ $(logError) $ T.pack $ prettyShow e
+                          runLogger $ logError $ T.pack $ prettyShow e
                           pure $ ExitFailure 15
 
           res <- case optCommand of
 #if defined(BRICK)
             Interactive -> do
               s' <- appState
-              liftIO $ brickMain s' loggerConfig >> pure ExitSuccess
+              liftIO $ brickMain s' >> pure ExitSuccess
 #endif
             Install (Right iopts) -> do
-              runLogger ($(logWarn) "This is an old-style command for installing GHC. Use 'ghcup install ghc' instead.")
+              runLogger (logWarn "This is an old-style command for installing GHC. Use 'ghcup install ghc' instead.")
               installGHC iopts
             Install (Left (InstallGHC iopts)) -> installGHC iopts
             Install (Left (InstallCabal iopts)) -> installCabal iopts
             Install (Left (InstallHLS iopts)) -> installHLS iopts
             Install (Left (InstallStack iopts)) -> installStack iopts
             InstallCabalLegacy iopts -> do
-              runLogger ($(logWarn) "This is an old-style command for installing cabal. Use 'ghcup install cabal' instead.")
+              runLogger (logWarn "This is an old-style command for installing cabal. Use 'ghcup install cabal' instead.")
               installCabal iopts
 
             Set (Right sopts) -> do
-              runLogger ($(logWarn) "This is an old-style command for setting GHC. Use 'ghcup set ghc' instead.")
+              runLogger (logWarn "This is an old-style command for setting GHC. Use 'ghcup set ghc' instead.")
               setGHC' sopts
             Set (Left (SetGHC sopts)) -> setGHC' sopts
             Set (Left (SetCabal sopts)) -> setCabal' sopts
@@ -2003,7 +2039,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                 )
 
             Rm (Right rmopts) -> do
-              runLogger ($(logWarn) "This is an old-style command for removing GHC. Use 'ghcup rm ghc' instead.")
+              runLogger (logWarn "This is an old-style command for removing GHC. Use 'ghcup rm ghc' instead.")
               rmGHC' rmopts
             Rm (Left (RmGHC rmopts)) -> rmGHC' rmopts
             Rm (Left (RmCabal rmopts)) -> rmCabal' rmopts
@@ -2017,11 +2053,11 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                         putStrLn $ prettyDebugInfo dinfo
                         pure ExitSuccess
                       VLeft e -> do
-                        runLogger $ $(logError) $ T.pack $ prettyShow e
+                        runLogger $ logError $ T.pack $ prettyShow e
                         pure $ ExitFailure 8
 
             Compile (CompileGHC GHCCompileOptions { hadrian = True, crossTarget = Just _ }) -> do
-              runLogger $ $(logError) "Hadrian cross compile support is not yet implemented!"
+              runLogger $ logError "Hadrian cross compile support is not yet implemented!"
               pure $ ExitFailure 9
             Compile (CompileGHC GHCCompileOptions {..}) ->
               runCompileGHC (do
@@ -2030,8 +2066,8 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                     GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
                     let vi = getVersionInfo targetVer GHC dls
                     forM_ (_viPreCompile =<< vi) $ \msg -> do
-                      lift $ $(logInfo) msg
-                      lift $ $(logInfo)
+                      lift $ logInfo msg
+                      lift $ logInfo
                         "...waiting for 5 seconds, you can still abort..."
                       liftIO $ threadDelay 5000000 -- for compilation, give the user a sec to intervene
                   Right _ -> pure ()
@@ -2054,32 +2090,32 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                 )
                 >>= \case
                       VRight (vi, tv) -> do
-                        runLogger $ $(logInfo)
+                        runLogger $ logInfo
                           "GHC successfully compiled and installed"
                         forM_ (_viPostInstall =<< vi) $ \msg ->
-                          runLogger $ $(logInfo) msg
+                          runLogger $ logInfo msg
                         putStr (T.unpack $ tVerToText tv)
                         pure ExitSuccess
                       VLeft (V (AlreadyInstalled _ v)) -> do
-                        runLogger $ $(logWarn) $
+                        runLogger $ logWarn $
                           "GHC ver " <> prettyVer v <> " already installed; if you really want to reinstall it, you may want to run 'ghcup rm ghc " <> prettyVer v <> "' first"
                         pure ExitSuccess
                       VLeft err@(V (BuildFailed tmpdir _)) -> do
                         case keepDirs settings of
-                          Never -> myLoggerT loggerConfig $ $(logError) $ T.pack $ prettyShow err
-                          _ -> myLoggerT loggerConfig $ ($(logError) $ T.pack (prettyShow err) <> "\n" <>
+                          Never -> runLogger $ logError $ T.pack $ prettyShow err
+                          _ -> runLogger $ (logError $ T.pack (prettyShow err) <> "\n" <>
                                 "Check the logs at " <> T.pack logsDir <> " and the build directory "
                                 <> T.pack tmpdir <> " for more clues." <> "\n" <>
                                 "Make sure to clean up " <> T.pack tmpdir <> " afterwards.")
                         pure $ ExitFailure 9
                       VLeft e -> do
-                        runLogger $ $(logError) $ T.pack $ prettyShow e
+                        runLogger $ logError $ T.pack $ prettyShow e
                         pure $ ExitFailure 9
 
             Config InitConfig -> do
               path <- getConfigFilePath
               writeFile path $ formatConfig $ fromSettings settings (Just keybindings)
-              runLogger $ $(logDebug) $ "config.yaml initialized at " <> T.pack path
+              runLogger $ logDebug $ "config.yaml initialized at " <> T.pack path
               pure ExitSuccess
 
             Config ShowConfig -> do
@@ -2089,20 +2125,20 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
             Config (SetConfig k v) -> do
               case v of
                 "" -> do
-                  runLogger $ $(logError) "Empty values are not allowed"
+                  runLogger $ logError "Empty values are not allowed"
                   pure $ ExitFailure 55
                 _  -> do
                   r <- runE @'[JSONError] $ do
                     settings' <- updateSettings (UTF8.fromString (k <> ": " <> v <> "\n")) settings
                     path <- liftIO getConfigFilePath
                     liftIO $ writeFile path $ formatConfig $ fromSettings settings' (Just keybindings)
-                    runLogger $ $(logDebug) $ T.pack $ show settings'
+                    runLogger $ logDebug $ T.pack $ show settings'
                     pure ()
 
                   case r of
                       VRight _ -> pure ExitSuccess
                       VLeft (V (JSONDecodeError e)) -> do
-                        runLogger $ $(logError) $ "Error decoding config: " <> T.pack e
+                        runLogger $ logError $ "Error decoding config: " <> T.pack e
                         pure $ ExitFailure 65
                       VLeft _ -> pure $ ExitFailure 65
 
@@ -2118,7 +2154,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                         putStr r
                         pure ExitSuccess
                       VLeft e -> do
-                        runLogger $ $(logError) $ T.pack $ prettyShow e
+                        runLogger $ logError $ T.pack $ prettyShow e
                         pure $ ExitFailure 30
 
             Whereis WhereisOptions{..} (WhereisTool tool whereVer) ->
@@ -2134,9 +2170,29 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                         putStr r
                         pure ExitSuccess
                       VLeft e -> do
-                        runLogger $ $(logError) $ T.pack $ prettyShow e
+                        runLogger $ logError $ T.pack $ prettyShow e
                         pure $ ExitFailure 30
 
+            Whereis _ WhereisBaseDir -> do
+              putStr baseDir
+              pure ExitSuccess
+
+            Whereis _ WhereisBinDir -> do
+              putStr binDir
+              pure ExitSuccess
+
+            Whereis _ WhereisCacheDir -> do
+              putStr cacheDir
+              pure ExitSuccess
+
+            Whereis _ WhereisLogsDir -> do
+              putStr logsDir
+              pure ExitSuccess
+
+            Whereis _ WhereisConfDir -> do
+              putStr confDir
+              pure ExitSuccess
+
             Upgrade uOpts force' -> do
               target <- case uOpts of
                 UpgradeInplace  -> Just <$> liftIO getExecutablePath
@@ -2151,23 +2207,22 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                   VRight (v', dls) -> do
                     let pretty_v = prettyVer v'
                     let vi = fromJust $ snd <$> getLatest dls GHCup
-                    runLogger $ $(logInfo) $
+                    runLogger $ logInfo $
                       "Successfully upgraded GHCup to version " <> pretty_v
                     forM_ (_viPostInstall vi) $ \msg ->
-                      runLogger $ $(logInfo) msg
+                      runLogger $ logInfo msg
                     pure ExitSuccess
                   VLeft (V NoUpdate) -> do
-                    runLogger $ $(logWarn) "No GHCup update available"
+                    runLogger $ logWarn "No GHCup update available"
                     pure ExitSuccess
                   VLeft e -> do
-                    runLogger $ $(logError) $ T.pack $ prettyShow e
+                    runLogger $ logError $ T.pack $ prettyShow e
                     pure $ ExitFailure 11
 
             ToolRequirements -> do
               s' <- appState
               flip runReaderT s'
-                $ runLogger
-                  (runE
+                $ (runE
                     @'[NoCompatiblePlatform , DistroNotFound , NoToolRequirements]
                   $ do
                       GHCupInfo { .. } <- lift getGHCupInfo
@@ -2178,7 +2233,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                   >>= \case
                         VRight _ -> pure ExitSuccess
                         VLeft  e -> do
-                          runLogger $ $(logError) $ T.pack $ prettyShow e
+                          runLogger $ logError $ T.pack $ prettyShow e
                           pure $ ExitFailure 12
 
             ChangeLog ChangeLogOptions{..} -> do
@@ -2195,7 +2250,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
               case muri of
                 Nothing -> do
                   runLogger
-                    ($(logWarn) $
+                    (logWarn $
                       "Could not find ChangeLog for " <> T.pack (prettyShow tool) <> ", version " <> either prettyVer (T.pack . show) ver'
                     )
                   pure ExitSuccess
@@ -2218,7 +2273,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                              Nothing
                           >>= \case
                                 Right _ -> pure ExitSuccess
-                                Left  e -> runLogger ($(logError) (T.pack $ prettyShow e))
+                                Left  e -> logError (T.pack $ prettyShow e)
                                   >> pure (ExitFailure 13)
                     else putStrLn uri' >> pure ExitSuccess
 
@@ -2226,12 +2281,12 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
               s' <- liftIO appState
               void $ liftIO $ evaluate $ force s'
               runNuke s' (do
-                   lift $ $logWarn "WARNING: This will remove GHCup and all installed components from your system."
-                   lift $ $logWarn "Waiting 10 seconds before commencing, if you want to cancel it, now would be the time."
+                   lift $ logWarn "WARNING: This will remove GHCup and all installed components from your system."
+                   lift $ logWarn "Waiting 10 seconds before commencing, if you want to cancel it, now would be the time."
                    liftIO $ threadDelay 10000000  -- wait 10s
 
-                   lift $ $logInfo "Initiating Nuclear Sequence 🚀🚀🚀"
-                   lift $ $logInfo "Nuking in 3...2...1"
+                   lift $ logInfo "Initiating Nuclear Sequence 🚀🚀🚀"
+                   lift $ logInfo "Nuking in 3...2...1"
               
                    lInstalled <- lift $ listVersions Nothing (Just ListInstalled)
 
@@ -2242,15 +2297,15 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                    ) >>= \case
                             VRight leftOverFiles
                               | null leftOverFiles -> do
-                                  runLogger $ $logInfo "Nuclear Annihilation complete!"
+                                  runLogger $ logInfo "Nuclear Annihilation complete!"
                                   pure ExitSuccess
                               | otherwise -> do
-                                  runLogger $ $logError "These Files have survived Nuclear Annihilation, you may remove them manually."
+                                  runLogger $ logError "These Files have survived Nuclear Annihilation, you may remove them manually."
                                   forM_ leftOverFiles putStrLn
                                   pure ExitSuccess
 
                             VLeft e -> do
-                              runLogger $ $(logError) $ T.pack $ prettyShow e
+                              runLogger $ logError $ T.pack $ prettyShow e
                               pure $ ExitFailure 15
             Prefetch pfCom ->
               runPrefetch (do
@@ -2281,7 +2336,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                             VRight _ -> do
                                   pure ExitSuccess
                             VLeft e -> do
-                              runLogger $ $(logError) $ T.pack $ prettyShow e
+                              runLogger $ logError $ T.pack $ prettyShow e
                               pure $ ExitFailure 15
 
 
@@ -2292,7 +2347,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
 
   pure ()
 
-fromVersion :: ( MonadLogger m
+fromVersion :: ( HasLog env
                , MonadFail m
                , MonadReader env m
                , HasGHCupInfo env
@@ -2310,7 +2365,7 @@ fromVersion :: ( MonadLogger m
                   ] m (GHCTargetVersion, Maybe VersionInfo)
 fromVersion tv = fromVersion' (toSetToolVer tv)
 
-fromVersion' :: ( MonadLogger m
+fromVersion' :: ( HasLog env
                 , MonadFail m
                 , MonadReader env m
                 , HasGHCupInfo env
@@ -2556,11 +2611,10 @@ checkForUpdates :: ( MonadReader env m
                    , HasDirs env
                    , HasPlatformReq env
                    , MonadCatch m
-                   , MonadLogger m
+                   , HasLog env
                    , MonadThrow m
                    , MonadIO m
                    , MonadFail m
-                   , MonadLogger m
                    )
                 => m ()
 checkForUpdates = do
@@ -2571,35 +2625,35 @@ checkForUpdates = do
   forM_ (getLatest dls GHCup) $ \(l, _) -> do
     (Right ghc_ver) <- pure $ version $ prettyPVP ghcUpVer
     when (l > ghc_ver)
-      $ $(logWarn) $
+      $ logWarn $
           "New GHCup version available: " <> prettyVer l <> ". To upgrade, run 'ghcup upgrade'"
 
   forM_ (getLatest dls GHC) $ \(l, _) -> do
     let mghc_ver = latestInstalled GHC
     forM mghc_ver $ \ghc_ver ->
       when (l > ghc_ver)
-        $ $(logWarn) $
+        $ logWarn $
           "New GHC version available: " <> prettyVer l <> ". To upgrade, run 'ghcup install ghc " <> prettyVer l <> "'"
 
   forM_ (getLatest dls Cabal) $ \(l, _) -> do
     let mcabal_ver = latestInstalled Cabal
     forM mcabal_ver $ \cabal_ver ->
       when (l > cabal_ver)
-        $ $(logWarn) $
+        $ logWarn $
           "New Cabal version available: " <> prettyVer l <> ". To upgrade, run 'ghcup install cabal " <> prettyVer l <> "'"
 
   forM_ (getLatest dls HLS) $ \(l, _) -> do
     let mhls_ver = latestInstalled HLS
     forM mhls_ver $ \hls_ver ->
       when (l > hls_ver)
-        $ $(logWarn) $
+        $ logWarn $
           "New HLS version available: " <> prettyVer l <> ". To upgrade, run 'ghcup install hls " <> prettyVer l <> "'"
 
   forM_ (getLatest dls Stack) $ \(l, _) -> do
     let mstack_ver = latestInstalled Stack
     forM mstack_ver $ \stack_ver ->
       when (l > stack_ver)
-        $ $(logWarn) $
+        $ logWarn $
           "New Stack version available: " <> prettyVer l <> ". To upgrade, run 'ghcup install stack " <> prettyVer l <> "'"
 
 

bootstrap-haskell

@@ -3,6 +3,7 @@
 # Main settings:
 #   * BOOTSTRAP_HASKELL_NONINTERACTIVE - any nonzero value for noninteractive installation
 #   * BOOTSTRAP_HASKELL_NO_UPGRADE - any nonzero value to not trigger the upgrade
+#   * BOOTSTRAP_HASKELL_MINIMAL - any nonzero value to only install ghcup
 #   * GHCUP_USE_XDG_DIRS - any nonzero value to respect The XDG Base Directory Specification
 #   * BOOTSTRAP_HASKELL_VERBOSE - any nonzero value for more verbose installation
 #   * BOOTSTRAP_HASKELL_GHC_VERSION - the ghc version to install
@@ -371,6 +372,13 @@ adjust_bashrc() {
 								echo "[[ -f ~/.bashrc ]] && source ~/.bashrc # ghcup-env" >> "${HOME}/.bash_profile"
 							fi
 							;;
+						MSYS*|MINGW*)
+							if [ ! -e "${HOME}/.bash_profile" ] ; then
+								echo '# generated by ghcup' > "${HOME}/.bash_profile"
+								echo 'test -f ~/.profile && . ~/.profile' >> "${HOME}/.bash_profile"
+								echo 'test -f ~/.bashrc && . ~/.bashrc' >> "${HOME}/.bash_profile"
+							fi
+							;;
 					esac
 					break ;;
 
@@ -591,10 +599,12 @@ ask_bashrc
 ask_bashrc_answer=$?
 ask_cabal_config_init
 ask_cabal_config_init_answer=$?
-ask_hls
-ask_hls_answer=$?
-ask_stack
-ask_stack_answer=$?
+if [ -z "${BOOTSTRAP_HASKELL_MINIMAL}" ] ; then
+	ask_hls
+	ask_hls_answer=$?
+	ask_stack
+	ask_stack_answer=$?
+fi
 
 edo mkdir -p "${GHCUP_BIN}"
 
@@ -620,14 +630,30 @@ if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
     read -r answer </dev/tty
 fi
 
-eghcup --cache install ghc "${BOOTSTRAP_HASKELL_GHC_VERSION}"
+if [ -z "${BOOTSTRAP_HASKELL_MINIMAL}" ] ; then
+	eghcup --cache install ghc "${BOOTSTRAP_HASKELL_GHC_VERSION}"
 
-eghcup set ghc "${BOOTSTRAP_HASKELL_GHC_VERSION}"
-eghcup --cache install cabal "${BOOTSTRAP_HASKELL_CABAL_VERSION}"
+	eghcup set ghc "${BOOTSTRAP_HASKELL_GHC_VERSION}"
+	eghcup --cache install cabal "${BOOTSTRAP_HASKELL_CABAL_VERSION}"
 
-do_cabal_config_init $ask_cabal_config_init_answer
+	do_cabal_config_init $ask_cabal_config_init_answer
 
-edo cabal new-update
+	edo cabal new-update
+else # don't install ghc and cabal
+	case "${plat}" in
+			MSYS*|MINGW*)
+				# need to bootstrap cabal to initialize config on windows
+				# we'll remove it afterwards
+				tmp_dir="$(mktemp -d)"
+				eghcup --cache install cabal -i "${tmp_dir}" "${BOOTSTRAP_HASKELL_CABAL_VERSION}"
+				PATH="${tmp_dir}:$PATH" do_cabal_config_init $ask_cabal_config_init_answer
+				rm "${tmp_dir}/cabal"
+				unset tmp_dir
+				;;
+			*)
+				;;
+	esac
+fi
 
 case $ask_hls_answer in
 	1)

bootstrap-haskell.ps1

@@ -15,24 +15,26 @@
 param (
     # Run an interactive installation
     [switch]$Interactive,
-    # Specify the install root (default: 'C:\')
-    [string]$InstallDir,
-    # Instead of installing a new MSys2, use an existing installation
-    [string]$ExistingMsys2Dir,
-    # Specify the cabal root directory (default: '$InstallDir\cabal')
-    [string]$CabalDir,
-    # Overwrite (or rather backup) a previous install
-    [switch]$Overwrite,
-    # Specify the bootstrap url (default: 'https://www.haskell.org/ghcup/sh/bootstrap-haskell')
-    [string]$BootstrapUrl,
+    # Do minimal installation of ghcup and msys2 only
+    [switch]$Minimal,
     # Run the final bootstrap script via 'bash' instead of a full newly spawned msys2 shell
     [switch]$InBash,
+    # Overwrite (or rather backup) a previous install
+    [switch]$Overwrite,
+    # Skip adjusting cabal.config with mingw paths
+    [switch]$NoAdjustCabalConfig,
     # Whether to install stack as well
     [switch]$InstallStack,
     # Whether to install hls as well
     [switch]$InstallHLS,
-    # Skip adjusting cabal.config with mingw paths
-    [switch]$NoAdjustCabalConfig
+    # Specify the bootstrap url (default: 'https://www.haskell.org/ghcup/sh/bootstrap-haskell')
+    [string]$InstallDir,
+    # Instead of installing a new MSys2, use an existing installation
+    [string]$BootstrapUrl,
+    # Specify the install root (default: 'C:\')
+    [string]$ExistingMsys2Dir,
+    # Specify the cabal root directory (default: '$InstallDir\cabal')
+    [string]$CabalDir
 )
 
 $Silent = !$Interactive
@@ -180,7 +182,7 @@ elevated command prompt:
 
 if ($GhcupBasePrefixEnv) {
   $defaultGhcupBasePrefix = $GhcupBasePrefixEnv
-} else {
+} elseif (!($InstallDir)) {
   $partitions = Get-CimInstance win32_logicaldisk
   $defaultGhcupBasePrefix = $null
   foreach ($p in $partitions){
@@ -209,10 +211,10 @@ if ($Silent -and !($InstallDir)) {
   $GhcupBasePrefix = $defaultGhcupBasePrefix
 } elseif ($InstallDir) {
   if (!(Test-Path -LiteralPath ('{0}' -f $InstallDir) -IsValid)) {
-    Print-Msg -color Red -msg "Not a valid directory!"
+    Print-Msg -color Red -msg "Not a valid directory! (InstallDir)"
     Exit 1
   } elseif (!(Split-Path -IsAbsolute -Path "$InstallDir")) {
-    Print-Msg -color Red -msg "Non-absolute Path specified!"
+    Print-Msg -color Red -msg "Non-absolute Path specified! (InstallDir)"
     Exit 1
   } else {
     $GhcupBasePrefix = $InstallDir
@@ -243,7 +245,20 @@ $null = [Environment]::SetEnvironmentVariable("GHCUP_INSTALL_BASE_PREFIX", $Ghcu
 
 
 $GhcupDir = ('{0}\ghcup' -f $GhcupBasePrefix)
-$MsysDir = ('{0}\msys64' -f $GhcupDir)
+if ($ExistingMsys2Dir) {
+  if (!(Test-Path -LiteralPath ('{0}' -f $ExistingMsys2Dir) -IsValid)) {
+    Print-Msg -color Red -msg "Not a valid directory! (ExistingMsys2Dir)"
+    Exit 1
+  } elseif (!(Split-Path -IsAbsolute -Path "$ExistingMsys2Dir")) {
+    Print-Msg -color Red -msg "Non-absolute Path specified! (ExistingMsys2Dir)"
+    Exit 1
+  } else {
+	$MsysDir = $ExistingMsys2Dir
+  }
+} else {
+	$MsysDir = ('{0}\msys64' -f $GhcupDir)
+}
+
 $Bash = ('{0}\usr\bin\bash' -f $MsysDir)
 if (!($BootstrapUrl)) {
   $BootstrapUrl = 'https://www.haskell.org/ghcup/sh/bootstrap-haskell'
@@ -398,6 +413,7 @@ if (!(Test-Path -Path ('{0}' -f $MsysDir))) {
 
     Print-Msg -msg 'Setting default home directory...'
     Exec "$Bash" '-lc' "sed -i -e 's/db_home:.*$/db_home: windows/' /etc/nsswitch.conf"
+
   } elseif ($msys2Decision -eq 1) {
     Print-Msg -color Yellow -msg 'Skipping MSys2 installation.'
     while ($true) {
@@ -529,10 +545,14 @@ if (!($NoAdjustCabalConfig)) {
   $AdjustCabalConfigExport = 'export BOOTSTRAP_HASKELL_ADJUST_CABAL_CONFIG=1 ;'
 }
 
+if ($Minimal) {
+  $MinimalExport = 'export BOOTSTRAP_HASKELL_MINIMAL=1 ;'
+}
+
 if ((Get-Process -ID $PID).ProcessName.StartsWith("bootstrap-haskell") -Or $InBash) {
-  Exec "$Bash" '-lc' ('{4} {6} {7} {8} [ -n ''{1}'' ] && export GHCUP_MSYS2=$(cygpath -m ''{1}'') ; [ -n ''{2}'' ] && export GHCUP_INSTALL_BASE_PREFIX=$(cygpath -m ''{2}/'') ; export PATH=$(cygpath -u ''{3}/bin''):$PATH ; export CABAL_DIR=''{5}'' ; [[ ''{0}'' = https* ]]  && curl --proto ''=https'' --tlsv1.2 -sSf {0} | bash || cat $(cygpath -m ''{0}'') | bash' -f $BootstrapUrl, $MsysDir, $GhcupBasePrefix, $GhcupDir, $SilentExport, $CabalDirFull, $StackInstallExport, $HLSInstallExport, $AdjustCabalConfigExport)
+  Exec "$Bash" '-lc' ('{4} {6} {7} {8} {9} [ -n ''{1}'' ] && export GHCUP_MSYS2=$(cygpath -m ''{1}'') ; [ -n ''{2}'' ] && export GHCUP_INSTALL_BASE_PREFIX=$(cygpath -m ''{2}/'') ; export PATH=$(cygpath -u ''{3}/bin''):$PATH ; export CABAL_DIR=''{5}'' ; [[ ''{0}'' = https* ]]  && curl --proto ''=https'' --tlsv1.2 -sSf {0} | bash || cat $(cygpath -m ''{0}'') | bash' -f $BootstrapUrl, $MsysDir, $GhcupBasePrefix, $GhcupDir, $SilentExport, $CabalDirFull, $StackInstallExport, $HLSInstallExport, $AdjustCabalConfigExport, $MinimalExport)
 } else {
-  Exec "$Msys2Shell" '-mingw64' '-mintty' '-c' ('{4} {6} {7} {8} [ -n ''{1}'' ] && export GHCUP_MSYS2=$(cygpath -m ''{1}'') ; [ -n ''{2}'' ] && export GHCUP_INSTALL_BASE_PREFIX=$(cygpath -m ''{2}/'') ; export PATH=$(cygpath -u ''{3}/bin''):$PATH ; export CABAL_DIR=''{5}'' ; trap ''echo Press any key to exit && read -n 1 && exit'' 2 ; [[ ''{0}'' = https* ]]  && curl --proto ''=https'' --tlsv1.2 -sSf {0} | bash || cat $(cygpath -m ''{0}'') | bash ; echo ''Press any key to exit'' && read -n 1' -f $BootstrapUrl, $MsysDir, $GhcupBasePrefix, $GhcupDir, $SilentExport, $CabalDirFull, $StackInstallExport, $HLSInstallExport, $AdjustCabalConfigExport)
+  Exec "$Msys2Shell" '-mingw64' '-mintty' '-c' ('{4} {6} {7} {8} {9} [ -n ''{1}'' ] && export GHCUP_MSYS2=$(cygpath -m ''{1}'') ; [ -n ''{2}'' ] && export GHCUP_INSTALL_BASE_PREFIX=$(cygpath -m ''{2}/'') ; export PATH=$(cygpath -u ''{3}/bin''):$PATH ; export CABAL_DIR=''{5}'' ; trap ''echo Press any key to exit && read -n 1 && exit'' 2 ; [[ ''{0}'' = https* ]]  && curl --proto ''=https'' --tlsv1.2 -sSf {0} | bash || cat $(cygpath -m ''{0}'') | bash ; echo ''Press any key to exit'' && read -n 1' -f $BootstrapUrl, $MsysDir, $GhcupBasePrefix, $GhcupDir, $SilentExport, $CabalDirFull, $StackInstallExport, $HLSInstallExport, $AdjustCabalConfigExport, $MinimalExport)
 }
 
 

cabal.ghc8107.project

@@ -8,26 +8,27 @@ package ghcup
     tests: True
     flags: +tui
 
-source-repository-package
-    type: git
-    location: https://github.com/jtdaugherty/brick.git
-    tag: b3b96cfe66dfd398d338e3feb2b6855e66a35190
-
-source-repository-package
-    type: git
-    location: https://github.com/Bodigrim/tar
-    tag: ac197ec7ea4838dc2b4e22b9b888b080cedf29cf
-
 source-repository-package
     type: git
     location: https://github.com/bgamari/terminal-size
     tag: 34ea816bd63f75f800eedac12c6908c6f3736036
 
+source-repository-package
+    type: git
+    location: https://github.com/hasufell/libarchive
+    tag: 8587aab78dd515928024ecd82c8f215e06db85cd
+
 constraints: http-io-streams -brotli
 
 package libarchive
   flags: -system-libarchive
 
+package aeson-pretty
+  flags: +lib-only
+
+package cabal-plan
+  flags: -exe
+
 allow-newer: base, ghc-prim, template-haskell, language-c
 
-with-compiler: ghc-8.10.5
+with-compiler: ghc-8.10.7

cabal.ghc8107.project.freeze

@@ -1,15 +1,18 @@
 active-repositories: hackage.haskell.org:merge
 constraints: any.Cabal ==3.2.1.0,
              any.HUnit ==1.6.2.0,
-             any.HsOpenSSL ==0.11.7,
+             any.HsOpenSSL ==0.11.7.1,
              HsOpenSSL -fast-bignum -homebrew-openssl -macports-openssl -use-pkg-config,
+             any.HsYAML ==0.2.1.0,
+             HsYAML -exe,
+             any.HsYAML-aeson ==0.2.0.0,
              any.QuickCheck ==2.14.2,
              QuickCheck -old-random +templatehaskell,
              any.StateVar ==1.2.2,
              any.aeson ==1.5.6.0,
              aeson -bytestring-builder -cffi -developer -fast,
              any.aeson-pretty ==0.8.8,
-             aeson-pretty -lib-only,
+             aeson-pretty +lib-only,
              any.alex ==3.2.6,
              alex +small_base,
              any.ansi-terminal ==0.11,
@@ -22,8 +25,7 @@ constraints: any.Cabal ==3.2.1.0,
              async -bench,
              any.attoparsec ==0.13.2.5,
              attoparsec -developer,
-             any.auto-update ==0.1.6,
-             any.base ==4.14.2.0,
+             any.base ==4.14.3.0,
              any.base-compat ==0.11.2,
              any.base-compat-batteries ==0.11.2,
              any.base-orphans ==0.8.4,
@@ -32,41 +34,34 @@ constraints: any.Cabal ==3.2.1.0,
              any.bifunctors ==5.5.11,
              bifunctors +semigroups +tagged,
              any.binary ==0.8.8.0,
-             any.bindings-DSL ==1.0.25,
              any.blaze-builder ==0.4.2.1,
-             any.brick ==0.63,
+             any.brick ==0.64,
              brick -demos,
              any.bytestring ==0.10.12.0,
              any.bz2 ==1.0.1.0,
              bz2 -cross +with-bzlib,
-             any.bzlib-conduit ==0.3.0.2,
              any.c2hs ==0.28.8,
              c2hs +base3 -regression,
+             any.cabal-plan ==0.7.2.0,
+             cabal-plan -_ -exe -license-report,
              any.call-stack ==0.4.0,
              any.case-insensitive ==1.2.1.0,
              any.casing ==0.1.4.1,
-             any.cereal ==0.5.8.1,
-             cereal -bytestring-builder,
              any.chs-cabal ==0.1.1.0,
              any.chs-deps ==0.1.0.0,
              chs-deps -cross,
              any.clock ==0.8.2,
              clock -llvm,
-             any.cmdargs ==0.10.21,
-             cmdargs +quotation -testprog,
              any.colour ==2.3.6,
              any.comonad ==5.0.8,
              comonad +containers +distributive +indexed-traversable,
              any.composition-prelude ==3.0.0.2,
              composition-prelude -development,
              any.concurrent-output ==1.10.12,
-             any.conduit ==1.3.4.1,
-             any.conduit-extra ==1.3.5,
-             any.conduit-zstd ==0.0.2.0,
              any.config-ini ==0.2.4.0,
              config-ini -enable-doctests,
-             any.containers ==0.6.4.1,
-             any.contravariant ==1.5.4,
+             any.containers ==0.6.5.1,
+             any.contravariant ==1.5.5,
              contravariant +semigroups +statevar +tagged,
              any.cpphs ==1.20.9.1,
              cpphs -old-locale,
@@ -74,44 +69,32 @@ constraints: any.Cabal ==3.2.1.0,
              any.cryptohash-sha256 ==0.11.102.0,
              cryptohash-sha256 -exe +use-cbits,
              any.data-clist ==0.1.2.3,
-             any.data-default-class ==0.1.2.0,
-             any.data-fix ==0.3.1,
+             any.data-fix ==0.3.2,
              any.deepseq ==1.4.4.0,
-             any.digest ==0.0.1.3,
-             digest -bytestring-in-base,
              any.directory ==1.3.6.0,
              any.disk-free-space ==0.1.0.1,
              any.distributive ==0.6.2.1,
              distributive +semigroups +tagged,
              any.dlist ==1.0,
              dlist -werror,
-             any.easy-file ==0.2.2,
-             any.errors ==2.3.0,
              any.exceptions ==0.10.4,
-             any.extra ==1.7.9,
-             any.fast-logger ==3.0.5,
              any.filepath ==1.4.2.1,
              any.free ==5.1.7,
              any.generic-arbitrary ==0.1.0,
-             any.generics-sop ==0.5.1.1,
-             any.ghc-boot-th ==8.10.5,
+             any.ghc-boot-th ==8.10.7,
              any.ghc-byteorder ==4.11.0.0.10,
              any.ghc-prim ==0.6.1,
              any.happy ==1.20.0,
-             any.hashable ==1.3.2.0,
+             any.hashable ==1.3.3.0,
              hashable +integer-gmp -random-initial-seed,
-             any.haskell-src-exts ==1.23.1,
-             any.haskell-src-meta ==0.8.7,
              any.haskus-utils-data ==1.4,
              any.haskus-utils-types ==1.5.1,
              any.haskus-utils-variant ==3.1,
-             any.hpath-filepath ==0.10.4,
-             any.hpath-posix ==0.13.3,
              any.hsc2hs ==0.68.7,
              hsc2hs -in-ghc-tree,
              any.hspec ==2.7.10,
              any.hspec-core ==2.7.10,
-             any.hspec-discover ==2.7.10 || ==2.8.2,
+             any.hspec-discover ==2.7.10 || ==2.8.3,
              any.hspec-expectations ==0.8.2,
              any.hspec-golden-aeson ==0.9.0.0,
              any.http-io-streams ==0.1.6.0,
@@ -128,34 +111,22 @@ constraints: any.Cabal ==3.2.1.0,
              language-c -allwarnings +iecfpextension +usebytestrings,
              any.libarchive ==3.0.2.2,
              libarchive -cross -low-memory -system-libarchive,
-             any.libyaml ==0.1.2,
-             libyaml -no-unicode -system-libyaml,
-             any.lifted-base ==0.2.3.12,
              any.lzma-static ==5.2.5.4,
              any.megaparsec ==9.0.1,
              megaparsec -dev,
              any.microlens ==0.4.12.0,
              any.microlens-mtl ==0.2.0.1,
              any.microlens-th ==0.4.3.10,
-             any.monad-control ==1.0.3,
-             any.monad-logger ==0.3.36,
-             monad-logger +template_haskell,
-             any.monad-loops ==0.4.3,
-             monad-loops +base4,
-             any.mono-traversable ==1.0.15.1,
              any.mtl ==2.2.2,
              any.network ==3.1.2.2,
              network -devel,
              any.network-uri ==2.6.4.1,
-             any.old-locale ==1.0.0.7,
-             any.old-time ==1.1.0.3,
              any.openssl-streams ==1.2.3.0,
              any.optics ==0.4,
              any.optics-core ==0.4,
              optics-core -explicit-generic-labels,
              any.optics-extra ==0.4,
              any.optics-th ==0.4,
-             any.optics-vl ==0.2.1,
              any.optparse-applicative ==0.16.1.0,
              optparse-applicative +process,
              any.os-release ==1.0.2,
@@ -167,8 +138,8 @@ constraints: any.Cabal ==3.2.1.0,
              any.polyparse ==1.13,
              any.pretty ==1.1.3.6,
              any.pretty-terminal ==0.1.0.0,
-             any.primitive ==0.7.1.0,
-             any.process ==1.6.9.0,
+             any.primitive ==0.7.2.0,
+             any.process ==1.6.13.2,
              any.profunctors ==5.6.2,
              any.quickcheck-arbitrary-adt ==0.3.1.0,
              any.quickcheck-io ==0.2.0,
@@ -178,7 +149,7 @@ constraints: any.Cabal ==3.2.1.0,
              any.regex-base ==0.94.0.1,
              any.regex-posix ==0.96.0.1,
              regex-posix -_regex-posix-clib,
-             any.resourcet ==1.2.4.2,
+             any.resourcet ==1.2.4.3,
              any.rts ==1.0.1,
              any.safe ==0.3.19,
              any.safe-exceptions ==0.1.7.2,
@@ -187,55 +158,41 @@ constraints: any.Cabal ==3.2.1.0,
              any.semigroupoids ==5.3.5,
              semigroupoids +comonad +containers +contravariant +distributive +tagged +unordered-containers,
              any.setenv ==0.1.1.3,
-             any.sop-core ==0.5.0.1,
              any.split ==0.2.3.4,
              any.splitmix ==0.1.0.3,
              splitmix -optimised-mixer,
              any.stm ==2.5.0.1,
-             any.stm-chans ==3.0.0.4,
-             any.streaming-commons ==0.2.2.1,
-             streaming-commons -use-bytestring-builder,
              any.strict ==0.4.0.1,
              strict +assoc,
              any.strict-base ==0.4.0.0,
-             any.string-interpolate ==0.3.1.1,
-             string-interpolate -bytestring-builder -extended-benchmarks -text-builder,
-             any.syb ==0.7.2.1,
              any.tagged ==0.8.6.1,
              tagged +deepseq +transformers,
-             any.tar ==0.6.0.0,
              any.template-haskell ==2.16.0.0,
              any.temporary ==1.3,
              any.terminal-progress-bar ==0.4.1,
              any.terminal-size ==0.3.2.1,
              any.terminfo ==0.4.1.4,
              any.text ==1.2.4.1,
-             any.text-conversions ==0.3.1,
              any.text-zipper ==0.11,
              any.tf-random ==0.5,
              any.th-abstraction ==0.4.2.0,
              any.th-compat ==0.1.2,
-             any.th-expand-syns ==0.4.8.0,
              any.th-lift ==0.8.2,
              any.th-lift-instances ==0.1.18,
-             any.th-orphans ==0.13.11,
-             any.th-reify-many ==0.1.9,
              any.these ==1.1.1.1,
              these +assoc,
              any.time ==1.9.3,
              any.time-compat ==1.9.6,
              time-compat -old-locale,
              any.transformers ==0.5.6.2,
-             any.transformers-base ==0.4.5.2,
+             any.transformers-base ==0.4.6,
              transformers-base +orphaninstances,
              any.transformers-compat ==0.7,
              transformers-compat -five +five-three -four +generic-deriving +mtl -three -two,
-             any.typed-process ==0.2.6.0,
              any.unix ==2.7.2.2,
              any.unix-bytestring ==0.3.7.3,
              any.unix-compat ==0.5.3,
              unix-compat -old-time,
-             any.unix-time ==0.4.7,
              any.unliftio-core ==0.2.0.1,
              any.unordered-containers ==0.2.14.0,
              unordered-containers -debug,
@@ -245,20 +202,12 @@ constraints: any.Cabal ==3.2.1.0,
              any.uuid-types ==1.0.5,
              any.vector ==0.12.3.0,
              vector +boundschecks -internalchecks -unsafechecks -wall,
-             any.vector-algorithms ==0.8.0.4,
-             vector-algorithms +bench +boundschecks -internalchecks -llvm +properties -unsafechecks,
              any.versions ==5.0.0,
              any.vty ==5.33,
              any.word-wrap ==0.4.1,
              any.word8 ==0.1.3,
              any.xor ==0.0.1.0,
-             any.yaml ==0.11.5.0,
-             yaml +no-examples +no-exe,
-             any.zip ==1.7.1,
-             zip -dev -disable-bzip2 -disable-zstd,
              any.zlib ==0.6.2.3,
              zlib -bundled-c-zlib -non-blocking-ffi -pkg-config,
-             any.zlib-bindings ==0.1.1.5,
-             any.zstd ==0.1.2.0,
-             zstd +standalone
-index-state: hackage.haskell.org 2021-07-27T07:59:57Z
+             any.zlib-bindings ==0.1.1.5
+index-state: hackage.haskell.org 2021-08-29T16:24:29Z

cabal.ghc901.project

@@ -8,26 +8,27 @@ package ghcup
     tests: True
     flags: +tui
 
-source-repository-package
-    type: git
-    location: https://github.com/jtdaugherty/brick.git
-    tag: b3b96cfe66dfd398d338e3feb2b6855e66a35190
-
-source-repository-package
-    type: git
-    location: https://github.com/Bodigrim/tar
-    tag: ac197ec7ea4838dc2b4e22b9b888b080cedf29cf
-
 source-repository-package
     type: git
     location: https://github.com/bgamari/terminal-size
     tag: 34ea816bd63f75f800eedac12c6908c6f3736036
 
+source-repository-package
+    type: git
+    location: https://github.com/hasufell/libarchive
+    tag: 8587aab78dd515928024ecd82c8f215e06db85cd
+
 constraints: http-io-streams -brotli
 
 package libarchive
   flags: -system-libarchive
 
+package aeson-pretty
+  flags: +lib-only
+
+package cabal-plan
+  flags: -exe
+
 allow-newer: base, ghc-prim, template-haskell, language-c
 
 with-compiler: ghc-9.0.1

cabal.ghc901.project.freeze

@@ -1,15 +1,18 @@
 active-repositories: hackage.haskell.org:merge
 constraints: any.Cabal ==3.4.0.0,
              any.HUnit ==1.6.2.0,
-             any.HsOpenSSL ==0.11.7,
+             any.HsOpenSSL ==0.11.7.1,
              HsOpenSSL -fast-bignum -homebrew-openssl -macports-openssl -use-pkg-config,
+             any.HsYAML ==0.2.1.0,
+             HsYAML -exe,
+             any.HsYAML-aeson ==0.2.0.0,
              any.QuickCheck ==2.14.2,
              QuickCheck -old-random +templatehaskell,
              any.StateVar ==1.2.2,
              any.aeson ==1.5.6.0,
              aeson -bytestring-builder -cffi -developer -fast,
              any.aeson-pretty ==0.8.8,
-             aeson-pretty -lib-only,
+             aeson-pretty +lib-only,
              any.alex ==3.2.6,
              alex +small_base,
              any.ansi-terminal ==0.11,
@@ -22,7 +25,6 @@ constraints: any.Cabal ==3.4.0.0,
              async -bench,
              any.attoparsec ==0.13.2.5,
              attoparsec -developer,
-             any.auto-update ==0.1.6,
              any.base ==4.15.0.0,
              any.base-compat ==0.11.2,
              any.base-compat-batteries ==0.11.2,
@@ -32,41 +34,34 @@ constraints: any.Cabal ==3.4.0.0,
              any.bifunctors ==5.5.11,
              bifunctors +semigroups +tagged,
              any.binary ==0.8.8.0,
-             any.bindings-DSL ==1.0.25,
              any.blaze-builder ==0.4.2.1,
-             any.brick ==0.63,
+             any.brick ==0.64,
              brick -demos,
              any.bytestring ==0.10.12.1,
              any.bz2 ==1.0.1.0,
              bz2 -cross +with-bzlib,
-             any.bzlib-conduit ==0.3.0.2,
              any.c2hs ==0.28.8,
              c2hs +base3 -regression,
+             any.cabal-plan ==0.7.2.0,
+             cabal-plan -_ -exe -license-report,
              any.call-stack ==0.4.0,
              any.case-insensitive ==1.2.1.0,
              any.casing ==0.1.4.1,
-             any.cereal ==0.5.8.1,
-             cereal -bytestring-builder,
              any.chs-cabal ==0.1.1.0,
              any.chs-deps ==0.1.0.0,
              chs-deps -cross,
              any.clock ==0.8.2,
              clock -llvm,
-             any.cmdargs ==0.10.21,
-             cmdargs +quotation -testprog,
              any.colour ==2.3.6,
              any.comonad ==5.0.8,
              comonad +containers +distributive +indexed-traversable,
              any.composition-prelude ==3.0.0.2,
              composition-prelude -development,
              any.concurrent-output ==1.10.12,
-             any.conduit ==1.3.4.1,
-             any.conduit-extra ==1.3.5,
-             any.conduit-zstd ==0.0.2.0,
              any.config-ini ==0.2.4.0,
              config-ini -enable-doctests,
              any.containers ==0.6.4.1,
-             any.contravariant ==1.5.4,
+             any.contravariant ==1.5.5,
              contravariant +semigroups +statevar +tagged,
              any.cpphs ==1.20.9.1,
              cpphs -old-locale,
@@ -74,45 +69,33 @@ constraints: any.Cabal ==3.4.0.0,
              any.cryptohash-sha256 ==0.11.102.0,
              cryptohash-sha256 -exe +use-cbits,
              any.data-clist ==0.1.2.3,
-             any.data-default-class ==0.1.2.0,
-             any.data-fix ==0.3.1,
+             any.data-fix ==0.3.2,
              any.deepseq ==1.4.5.0,
-             any.digest ==0.0.1.3,
-             digest -bytestring-in-base,
              any.directory ==1.3.6.1,
              any.disk-free-space ==0.1.0.1,
              any.distributive ==0.6.2.1,
              distributive +semigroups +tagged,
              any.dlist ==1.0,
              dlist -werror,
-             any.easy-file ==0.2.2,
-             any.errors ==2.3.0,
              any.exceptions ==0.10.4,
-             any.extra ==1.7.9,
-             any.fast-logger ==3.0.5,
              any.filepath ==1.4.2.1,
              any.free ==5.1.7,
              any.generic-arbitrary ==0.1.0,
-             any.generics-sop ==0.5.1.1,
              any.ghc-bignum ==1.0,
              any.ghc-boot-th ==9.0.1,
              any.ghc-byteorder ==4.11.0.0.10,
              any.ghc-prim ==0.7.0,
              any.happy ==1.20.0,
-             any.hashable ==1.3.2.0,
+             any.hashable ==1.3.3.0,
              hashable +integer-gmp -random-initial-seed,
-             any.haskell-src-exts ==1.23.1,
-             any.haskell-src-meta ==0.8.7,
              any.haskus-utils-data ==1.4,
              any.haskus-utils-types ==1.5.1,
              any.haskus-utils-variant ==3.1,
-             any.hpath-filepath ==0.10.4,
-             any.hpath-posix ==0.13.3,
              any.hsc2hs ==0.68.7,
              hsc2hs -in-ghc-tree,
              any.hspec ==2.7.10,
              any.hspec-core ==2.7.10,
-             any.hspec-discover ==2.7.10 || ==2.8.2,
+             any.hspec-discover ==2.7.10 || ==2.8.3,
              any.hspec-expectations ==0.8.2,
              any.hspec-golden-aeson ==0.9.0.0,
              any.http-io-streams ==0.1.6.0,
@@ -128,34 +111,22 @@ constraints: any.Cabal ==3.4.0.0,
              language-c -allwarnings +iecfpextension +usebytestrings,
              any.libarchive ==3.0.2.2,
              libarchive -cross -low-memory -system-libarchive,
-             any.libyaml ==0.1.2,
-             libyaml -no-unicode -system-libyaml,
-             any.lifted-base ==0.2.3.12,
              any.lzma-static ==5.2.5.4,
              any.megaparsec ==9.0.1,
              megaparsec -dev,
              any.microlens ==0.4.12.0,
              any.microlens-mtl ==0.2.0.1,
              any.microlens-th ==0.4.3.10,
-             any.monad-control ==1.0.3,
-             any.monad-logger ==0.3.36,
-             monad-logger +template_haskell,
-             any.monad-loops ==0.4.3,
-             monad-loops +base4,
-             any.mono-traversable ==1.0.15.1,
              any.mtl ==2.2.2,
              any.network ==3.1.2.2,
              network -devel,
              any.network-uri ==2.6.4.1,
-             any.old-locale ==1.0.0.7,
-             any.old-time ==1.1.0.3,
              any.openssl-streams ==1.2.3.0,
              any.optics ==0.4,
              any.optics-core ==0.4,
              optics-core -explicit-generic-labels,
              any.optics-extra ==0.4,
              any.optics-th ==0.4,
-             any.optics-vl ==0.2.1,
              any.optparse-applicative ==0.16.1.0,
              optparse-applicative +process,
              any.os-release ==1.0.2,
@@ -167,7 +138,7 @@ constraints: any.Cabal ==3.4.0.0,
              any.polyparse ==1.13,
              any.pretty ==1.1.3.6,
              any.pretty-terminal ==0.1.0.0,
-             any.primitive ==0.7.1.0,
+             any.primitive ==0.7.2.0,
              any.process ==1.6.11.0,
              any.profunctors ==5.6.2,
              any.quickcheck-arbitrary-adt ==0.3.1.0,
@@ -178,7 +149,7 @@ constraints: any.Cabal ==3.4.0.0,
              any.regex-base ==0.94.0.1,
              any.regex-posix ==0.96.0.1,
              regex-posix -_regex-posix-clib,
-             any.resourcet ==1.2.4.2,
+             any.resourcet ==1.2.4.3,
              any.rts ==1.0,
              any.safe ==0.3.19,
              any.safe-exceptions ==0.1.7.2,
@@ -187,55 +158,41 @@ constraints: any.Cabal ==3.4.0.0,
              any.semigroupoids ==5.3.5,
              semigroupoids +comonad +containers +contravariant +distributive +tagged +unordered-containers,
              any.setenv ==0.1.1.3,
-             any.sop-core ==0.5.0.1,
              any.split ==0.2.3.4,
              any.splitmix ==0.1.0.3,
              splitmix -optimised-mixer,
              any.stm ==2.5.0.0,
-             any.stm-chans ==3.0.0.4,
-             any.streaming-commons ==0.2.2.1,
-             streaming-commons -use-bytestring-builder,
              any.strict ==0.4.0.1,
              strict +assoc,
              any.strict-base ==0.4.0.0,
-             any.string-interpolate ==0.3.1.1,
-             string-interpolate -bytestring-builder -extended-benchmarks -text-builder,
-             any.syb ==0.7.2.1,
              any.tagged ==0.8.6.1,
              tagged +deepseq +transformers,
-             any.tar ==0.6.0.0,
              any.template-haskell ==2.17.0.0,
              any.temporary ==1.3,
              any.terminal-progress-bar ==0.4.1,
              any.terminal-size ==0.3.2.1,
              any.terminfo ==0.4.1.4,
              any.text ==1.2.4.1,
-             any.text-conversions ==0.3.1,
              any.text-zipper ==0.11,
              any.tf-random ==0.5,
              any.th-abstraction ==0.4.2.0,
              any.th-compat ==0.1.2,
-             any.th-expand-syns ==0.4.8.0,
              any.th-lift ==0.8.2,
              any.th-lift-instances ==0.1.18,
-             any.th-orphans ==0.13.11,
-             any.th-reify-many ==0.1.9,
              any.these ==1.1.1.1,
              these +assoc,
              any.time ==1.9.3,
              any.time-compat ==1.9.6,
              time-compat -old-locale,
              any.transformers ==0.5.6.2,
-             any.transformers-base ==0.4.5.2,
+             any.transformers-base ==0.4.6,
              transformers-base +orphaninstances,
              any.transformers-compat ==0.7,
              transformers-compat -five +five-three -four +generic-deriving +mtl -three -two,
-             any.typed-process ==0.2.6.0,
              any.unix ==2.7.2.2,
              any.unix-bytestring ==0.3.7.3,
              any.unix-compat ==0.5.3,
              unix-compat -old-time,
-             any.unix-time ==0.4.7,
              any.unliftio-core ==0.2.0.1,
              any.unordered-containers ==0.2.14.0,
              unordered-containers -debug,
@@ -245,20 +202,12 @@ constraints: any.Cabal ==3.4.0.0,
              any.uuid-types ==1.0.5,
              any.vector ==0.12.3.0,
              vector +boundschecks -internalchecks -unsafechecks -wall,
-             any.vector-algorithms ==0.8.0.4,
-             vector-algorithms +bench +boundschecks -internalchecks -llvm +properties -unsafechecks,
              any.versions ==5.0.0,
              any.vty ==5.33,
              any.word-wrap ==0.4.1,
              any.word8 ==0.1.3,
              any.xor ==0.0.1.0,
-             any.yaml ==0.11.5.0,
-             yaml +no-examples +no-exe,
-             any.zip ==1.7.1,
-             zip -dev -disable-bzip2 -disable-zstd,
              any.zlib ==0.6.2.3,
              zlib -bundled-c-zlib -non-blocking-ffi -pkg-config,
-             any.zlib-bindings ==0.1.1.5,
-             any.zstd ==0.1.2.0,
-             zstd +standalone
-index-state: hackage.haskell.org 2021-07-27T07:59:57Z
+             any.zlib-bindings ==0.1.1.5
+index-state: hackage.haskell.org 2021-08-29T16:24:29Z

cabal.project

@@ -16,11 +16,17 @@ source-repository-package
 source-repository-package
     type: git
     location: https://github.com/hasufell/libarchive
-    tag: 024a7e8ab7b4d3848dc64dca1e70a04831eedc99
+    tag: 8587aab78dd515928024ecd82c8f215e06db85cd
 
 constraints: http-io-streams -brotli
 
 package libarchive
   flags: -system-libarchive
 
+package aeson-pretty
+  flags: +lib-only
+
+package cabal-plan
+  flags: -exe
+
 allow-newer: base, ghc-prim, template-haskell, language-c

ghcup-0.0.6.yaml

@@ -1690,7 +1690,6 @@ ghcupDownloads:
               dlHash: 56170d1a8450e18b7eb9c23c94723da352815b27ec250bb23742a62f16dcab6c
     8.10.6:
       viTags:
-      - Recommended
       - base-4.14.3.0
       viChangeLog: https://downloads.haskell.org/~ghc/8.10.6/docs/html/users_guide/8.10.6-notes.html
       viSourceDL:
@@ -1789,6 +1788,107 @@ ghcupDownloads:
               dlUri: https://downloads.haskell.org/~ghc/8.10.6/ghc-8.10.6-armv7-deb10-linux.tar.xz
               dlSubdir: ghc-8.10.6
               dlHash: d54de8306aa8b33afabf2ac94408e1f82c8e982a2a3346168c071b92bdb464c0
+    8.10.7:
+      viTags:
+      - Recommended
+      - base-4.14.3.0
+      viChangeLog: https://downloads.haskell.org/~ghc/8.10.7/docs/html/users_guide/8.10.7-notes.html
+      viSourceDL:
+        dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-src.tar.xz
+        dlSubdir: ghc-8.10.7
+        dlHash: e3eef6229ce9908dfe1ea41436befb0455fefb1932559e860ad4c606b0d03c9d
+      viPostRemove: *ghc-post-remove
+      viPreCompile: *ghc-pre-compile
+      viArch:
+        A_64:
+          Linux_Debian:
+            '( >= 9 && < 10 )': &ghc-8107-64-deb9
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-x86_64-deb9-linux.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: ced9870ea351af64fb48274b81a664cdb6a9266775f1598a79cbb6fdd5770a23
+            '( >= 10 && < 11 )': &ghc-8107-64-deb10
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-x86_64-deb10-linux.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: a13719bca87a0d3ac0c7d4157a4e60887009a7f1a8dbe95c4759ec413e086d30
+            unknown_versioning: *ghc-8107-64-deb9
+          Linux_Ubuntu:
+            unknown_versioning: &ghc-8107-64-fedora
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-x86_64-fedora27-linux.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: b6ed67049a23054a8042e65c9976d5e196e5ee4e83b29b2ee35c8a22ab1e5b73
+            '( >= 16 && < 19 )': *ghc-8107-64-deb9
+          Linux_Mint:
+            unknown_versioning: *ghc-8107-64-deb10
+          Linux_Fedora:
+            '( >= 27 && < 28 )': *ghc-8107-64-fedora
+            unknown_versioning: *ghc-8107-64-fedora
+          Linux_CentOS:
+            '( >= 7 && < 8 )': &ghc-8107-64-centos
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-x86_64-centos7-linux.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: 262a50bfb5b7c8770e0d99f54d42e5876968da7bf93e2e4d6cfe397891a36d05
+            unknown_versioning: *ghc-8107-64-centos
+          Linux_RedHat:
+            unknown_versioning: *ghc-8107-64-centos
+          Linux_Alpine:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-x86_64-alpine3.10-linux-integer-simple.tar.xz
+              dlSubdir: ghc-8.10.7-x86_64-unknown-linux
+              dlHash: 16903df850ef73d5246f2ff169cbf57ecab76c2ac5acfa9928934282cfad575c
+          Linux_AmazonLinux:
+            unknown_versioning: *ghc-8107-64-centos
+          Linux_UnknownLinux:
+            unknown_versioning: *ghc-8107-64-fedora
+          Darwin:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-x86_64-apple-darwin.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: 287db0f9c338c9f53123bfa8731b0996803ee50f6ee847fe388092e5e5132047
+          FreeBSD:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-x86_64-unknown-freebsd.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: 45e35d24bc700e1093efa39189e9fa01498069881aed2fa8779c011941a80da1
+          Windows:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-x86_64-unknown-mingw32.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: b6515b0ea3f7a6e34d92e7fcd0c1fef50d6030fe8f46883000185289a4b8ea9a
+        A_32:
+          Linux_Debian:
+            '( >= 9 && < 10 )': &ghc-8107-32-deb9
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-i386-deb9-linux.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: fbfc1ef194f4e7a4c0da8c11cc69b17458a4b928b609b3622c97acc4acd5c5ab
+            unknown_versioning: *ghc-8107-32-deb9
+          Linux_Ubuntu:
+            unknown_versioning: *ghc-8107-32-deb9
+          Linux_Mint:
+            unknown_versioning: *ghc-8107-32-deb9
+          Linux_UnknownLinux:
+            unknown_versioning: *ghc-8107-32-deb9
+          Linux_Alpine:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghcup/unofficial-bindists/ghc/8.10.7/ghc-8.10.7-i386-alpine-linux.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: 3110e6ee029d9d8062158b54b06f71a21b0fac87bf0e085f9be5bbcf73f99e6d
+        A_ARM64:
+          Linux_UnknownLinux:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-aarch64-deb10-linux.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: fad2417f9b295233bf8ade79c0e6140896359e87be46cb61cd1d35863d9d0e55
+          Darwin:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-aarch64-apple-darwin.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: dc469fc3c35fd2a33a5a575ffce87f13de7b98c2d349a41002e200a56d9bba1c
+        A_ARM:
+          Linux_UnknownLinux:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-armv7-deb10-linux.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: 3949c31bdf7d3b4afb765ea8246bca4ca9707c5d988d9961a244f0da100956a2
     9.0.1:
       viTags:
       - Latest

ghcup-0.0.7.yaml

@@ -1746,7 +1746,6 @@ ghcupDownloads:
               dlHash: 56170d1a8450e18b7eb9c23c94723da352815b27ec250bb23742a62f16dcab6c
     8.10.6:
       viTags:
-      - Recommended
       - base-4.14.3.0
       viChangeLog: https://downloads.haskell.org/~ghc/8.10.6/docs/html/users_guide/8.10.6-notes.html
       viSourceDL:
@@ -1847,6 +1846,107 @@ ghcupDownloads:
               dlUri: https://downloads.haskell.org/~ghc/8.10.6/ghc-8.10.6-armv7-deb10-linux.tar.xz
               dlSubdir: ghc-8.10.6
               dlHash: d54de8306aa8b33afabf2ac94408e1f82c8e982a2a3346168c071b92bdb464c0
+    8.10.7:
+      viTags:
+      - Recommended
+      - base-4.14.3.0
+      viChangeLog: https://downloads.haskell.org/~ghc/8.10.7/docs/html/users_guide/8.10.7-notes.html
+      viSourceDL:
+        dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-src.tar.xz
+        dlSubdir: ghc-8.10.7
+        dlHash: e3eef6229ce9908dfe1ea41436befb0455fefb1932559e860ad4c606b0d03c9d
+      viPostRemove: *ghc-post-remove
+      viPreCompile: *ghc-pre-compile
+      viArch:
+        A_64:
+          Linux_Debian:
+            '( >= 9 && < 10 )': &ghc-8107-64-deb9
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-x86_64-deb9-linux.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: ced9870ea351af64fb48274b81a664cdb6a9266775f1598a79cbb6fdd5770a23
+            '( >= 10 && < 11 )': &ghc-8107-64-deb10
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-x86_64-deb10-linux.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: a13719bca87a0d3ac0c7d4157a4e60887009a7f1a8dbe95c4759ec413e086d30
+            unknown_versioning: *ghc-8107-64-deb9
+          Linux_Ubuntu:
+            unknown_versioning: &ghc-8107-64-fedora
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-x86_64-fedora27-linux.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: b6ed67049a23054a8042e65c9976d5e196e5ee4e83b29b2ee35c8a22ab1e5b73
+            '( >= 16 && < 19 )': *ghc-8107-64-deb9
+          Linux_Mint:
+            unknown_versioning: *ghc-8107-64-deb10
+          Linux_Fedora:
+            '( >= 27 && < 28 )': *ghc-8107-64-fedora
+            unknown_versioning: *ghc-8107-64-fedora
+          Linux_CentOS:
+            '( >= 7 && < 8 )': &ghc-8107-64-centos
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-x86_64-centos7-linux.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: 262a50bfb5b7c8770e0d99f54d42e5876968da7bf93e2e4d6cfe397891a36d05
+            unknown_versioning: *ghc-8107-64-centos
+          Linux_RedHat:
+            unknown_versioning: *ghc-8107-64-centos
+          Linux_Alpine:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-x86_64-alpine3.10-linux-integer-simple.tar.xz
+              dlSubdir: ghc-8.10.7-x86_64-unknown-linux
+              dlHash: 16903df850ef73d5246f2ff169cbf57ecab76c2ac5acfa9928934282cfad575c
+          Linux_AmazonLinux:
+            unknown_versioning: *ghc-8107-64-centos
+          Linux_UnknownLinux:
+            unknown_versioning: *ghc-8107-64-fedora
+          Darwin:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-x86_64-apple-darwin.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: 287db0f9c338c9f53123bfa8731b0996803ee50f6ee847fe388092e5e5132047
+          FreeBSD:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-x86_64-unknown-freebsd.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: 45e35d24bc700e1093efa39189e9fa01498069881aed2fa8779c011941a80da1
+          Windows:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-x86_64-unknown-mingw32.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: b6515b0ea3f7a6e34d92e7fcd0c1fef50d6030fe8f46883000185289a4b8ea9a
+        A_32:
+          Linux_Debian:
+            '( >= 9 && < 10 )': &ghc-8107-32-deb9
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-i386-deb9-linux.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: fbfc1ef194f4e7a4c0da8c11cc69b17458a4b928b609b3622c97acc4acd5c5ab
+            unknown_versioning: *ghc-8107-32-deb9
+          Linux_Ubuntu:
+            unknown_versioning: *ghc-8107-32-deb9
+          Linux_Mint:
+            unknown_versioning: *ghc-8107-32-deb9
+          Linux_UnknownLinux:
+            unknown_versioning: *ghc-8107-32-deb9
+          Linux_Alpine:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghcup/unofficial-bindists/ghc/8.10.7/ghc-8.10.7-i386-alpine-linux.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: 3110e6ee029d9d8062158b54b06f71a21b0fac87bf0e085f9be5bbcf73f99e6d
+        A_ARM64:
+          Linux_UnknownLinux:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-aarch64-deb10-linux.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: fad2417f9b295233bf8ade79c0e6140896359e87be46cb61cd1d35863d9d0e55
+          Darwin:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-aarch64-apple-darwin.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: dc469fc3c35fd2a33a5a575ffce87f13de7b98c2d349a41002e200a56d9bba1c
+        A_ARM:
+          Linux_UnknownLinux:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.7/ghc-8.10.7-armv7-deb10-linux.tar.xz
+              dlSubdir: ghc-8.10.7
+              dlHash: 3949c31bdf7d3b4afb765ea8246bca4ca9707c5d988d9961a244f0da100956a2
     9.0.1:
       viTags:
       - Latest

ghcup.cabal

@@ -104,14 +104,12 @@ library
     , deepseq               ^>=1.4.4.0
     , directory             ^>=1.3.6.0
     , disk-free-space       ^>=0.1.0.1
-    , extra                 ^>=1.7.9
     , filepath              ^>=1.4.2.1
     , haskus-utils-types    ^>=1.5
     , haskus-utils-variant  >=3.0        && <3.2
     , libarchive            ^>=3.0.0.0
     , lzma-static           ^>=5.2.5.3
     , megaparsec            >=8.0.0      && <9.1
-    , monad-logger          ^>=0.3.31
     , mtl                   ^>=2.2
     , optics                ^>=0.4
     , os-release            ^>=1.0.0
@@ -134,8 +132,7 @@ library
     , vector                ^>=0.12
     , versions              >=4.0.1      && <5.1
     , word8                 ^>=0.1.3
-    , yaml                  ^>=0.11.4.0
-    , zip                   ^>=1.7.1
+    , HsYAML-aeson          ^>=0.2.0.0
     , zlib                  ^>=0.6.2.2
 
   if (flag(internal-downloader) && !os(windows))
@@ -186,9 +183,12 @@ executable ghcup
     -fwarn-incomplete-record-updates -threaded
 
   build-depends:
+    , aeson                 >=1.4      && <1.6
+    , aeson-pretty          ^>=0.8.8
     , async                 ^>=2.2.3
     , base                  >=4.13     && <5
     , bytestring            ^>=0.10
+    , cabal-plan            ^>=0.7.2
     , containers            ^>=0.6
     , deepseq               ^>=1.4
     , filepath              ^>=1.4.2.1
@@ -196,7 +196,6 @@ executable ghcup
     , haskus-utils-variant  >=3.0      && <3.2
     , libarchive            ^>=3.0.0.0
     , megaparsec            >=8.0.0    && <9.1
-    , monad-logger          ^>=0.3.31
     , mtl                   ^>=2.2
     , optparse-applicative  >=0.15.1.0 && <0.17
     , pretty                ^>=1.1.3.1
@@ -209,7 +208,7 @@ executable ghcup
     , uri-bytestring        ^>=0.3.2.2
     , utf8-string           ^>=1.0
     , versions              >=4.0.1    && <5.1
-    , yaml                  ^>=0.11.4.0
+    , HsYAML-aeson          ^>=0.2.0.0
 
   if flag(internal-downloader)
     cpp-options: -DINTERNAL_DOWNLOADER
@@ -258,7 +257,6 @@ executable ghcup-gen
     , ghcup
     , haskus-utils-variant  >=3.0      && <3.2
     , libarchive            ^>=3.0.0.0
-    , monad-logger          ^>=0.3.31
     , mtl                   ^>=2.2
     , optics                ^>=0.4
     , optparse-applicative  >=0.15.1.0 && <0.17
@@ -270,7 +268,7 @@ executable ghcup-gen
     , text                  ^>=1.2.4.0
     , transformers          ^>=0.5
     , versions              >=4.0.1    && <5.1
-    , yaml                  ^>=0.11.4.0
+    , HsYAML-aeson          ^>=0.2.0.0
 
 test-suite ghcup-test
   type:               exitcode-stdio-1.0

lib/GHCup.hs

@@ -48,7 +48,6 @@ import           Control.Monad
 #if !MIN_VERSION_base(4,13,0)
 import           Control.Monad.Fail             ( MonadFail )
 #endif
-import           Control.Monad.Logger
 import           Control.Monad.Reader
 import           Control.Monad.Trans.Resource
                                          hiding ( throwM )
@@ -58,7 +57,6 @@ import           Control.Monad.IO.Unlift        ( MonadUnliftIO( withRunInIO ) )
 import           Data.ByteString                ( ByteString )
 import           Data.Either
 import           Data.List
-import           Data.List.Extra
 import           Data.Maybe
 import           Data.String                    ( fromString )
 import           Data.Text                      ( Text )
@@ -112,7 +110,7 @@ fetchToolBindist :: ( MonadFail m
                     , HasSettings env
                     , HasPlatformReq env
                     , HasGHCupInfo env
-                    , MonadLogger m
+                    , HasLog env
                     , MonadResource m
                     , MonadIO m
                     , MonadUnliftIO m
@@ -140,7 +138,7 @@ fetchGHCSrc :: ( MonadFail m
                , HasSettings env
                , HasPlatformReq env
                , HasGHCupInfo env
-               , MonadLogger m
+               , HasLog env
                , MonadResource m
                , MonadIO m
                , MonadUnliftIO m
@@ -177,7 +175,7 @@ installGHCBindist :: ( MonadFail m
                      , HasDirs env
                      , HasSettings env
                      , HasPlatformReq env
-                     , MonadLogger m
+                     , HasLog env
                      , MonadResource m
                      , MonadIO m
                      , MonadUnliftIO m
@@ -202,7 +200,7 @@ installGHCBindist :: ( MonadFail m
 installGHCBindist dlinfo ver isoFilepath = do
   let tver = mkTVer ver
 
-  lift $ $(logDebug) $ "Requested to install GHC with " <> prettyVer ver
+  lift $ logDebug $ "Requested to install GHC with " <> prettyVer ver
 
   case isoFilepath of
     -- we only care for already installed errors in regular (non-isolated) installs
@@ -219,7 +217,7 @@ installGHCBindist dlinfo ver isoFilepath = do
   
   case isoFilepath of
     Just isoDir -> do                        -- isolated install
-      lift $ $(logInfo) $ "isolated installing GHC to " <> T.pack isoDir
+      lift $ logInfo $ "isolated installing GHC to " <> T.pack isoDir
       liftE $ installPackedGHC dl (view dlSubdir dlinfo) isoDir ver
     Nothing -> do                            -- regular install
       liftE $ installPackedGHC dl (view dlSubdir dlinfo) ghcdir ver
@@ -233,9 +231,9 @@ installGHCBindist dlinfo ver isoFilepath = do
     case catMaybes r of
       [] -> pure ()
       _ -> do
-        lift $ $(logWarn) "CC/LD environment variable is set. This will change the compiler/linker"
-        lift $ $(logWarn) "GHC uses internally and can cause defunct GHC in some cases (e.g. in Anaconda"
-        lift $ $(logWarn) "environments). If you encounter problems, unset CC and LD and reinstall."
+        lift $ logWarn $ "CC/LD environment variable is set. This will change the compiler/linker"
+         <> "\n" <> "GHC uses internally and can cause defunct GHC in some cases (e.g. in Anaconda"
+         <> "\n" <> "environments). If you encounter problems, unset CC and LD and reinstall."
 
 
 -- | Install a packed GHC distribution. This only deals with unpacking and the GHC
@@ -247,7 +245,7 @@ installPackedGHC :: ( MonadMask m
                     , HasPlatformReq env
                     , HasSettings env
                     , MonadThrow m
-                    , MonadLogger m
+                    , HasLog env
                     , MonadIO m
                     , MonadUnliftIO m
                     )
@@ -305,7 +303,7 @@ installUnpackedGHC :: ( MonadReader env m
                       , HasDirs env
                       , HasSettings env
                       , MonadThrow m
-                      , MonadLogger m
+                      , HasLog env
                       , MonadIO m
                       , MonadUnliftIO m
                       , MonadMask m
@@ -316,7 +314,7 @@ installUnpackedGHC :: ( MonadReader env m
                    -> Excepts '[ProcessError] m ()
 installUnpackedGHC path inst ver = do
 #if defined(IS_WINDOWS)
-  lift $ $(logInfo) "Installing GHC (this may take a while)"
+  lift $ logInfo "Installing GHC (this may take a while)"
   -- Windows bindists are relocatable and don't need
   -- to run configure.
   -- We also must make sure to preserve mtime to not confuse ghc-pkg.
@@ -333,7 +331,7 @@ installUnpackedGHC path inst ver = do
        | otherwise
        = []
 
-  lift $ $(logInfo) "Installing GHC (this may take a while)"
+  lift $ logInfo "Installing GHC (this may take a while)"
   lEM $ execLogged "sh"
                    ("./configure" : ("--prefix=" <> inst) 
                     : alpineArgs
@@ -359,7 +357,7 @@ installGHCBin :: ( MonadFail m
                  , HasGHCupInfo env
                  , HasDirs env
                  , HasSettings env
-                 , MonadLogger m
+                 , HasLog env
                  , MonadResource m
                  , MonadIO m
                  , MonadUnliftIO m
@@ -393,7 +391,7 @@ installCabalBindist :: ( MonadMask m
                        , HasPlatformReq env
                        , HasDirs env
                        , HasSettings env
-                       , MonadLogger m
+                       , HasLog env
                        , MonadResource m
                        , MonadIO m
                        , MonadUnliftIO m
@@ -417,7 +415,7 @@ installCabalBindist :: ( MonadMask m
                          m
                          ()
 installCabalBindist dlinfo ver isoFilepath = do
-  lift $ $(logDebug) $ "Requested to install cabal version " <> prettyVer ver
+  lift $ logDebug $ "Requested to install cabal version " <> prettyVer ver
 
   PlatformRequest {..} <- lift getPlatformReq
   Dirs {..} <- lift getDirs
@@ -448,7 +446,7 @@ installCabalBindist dlinfo ver isoFilepath = do
 
   case isoFilepath of
     Just isoDir -> do             -- isolated install
-      lift $ $(logInfo) $ "isolated installing Cabal to " <> T.pack isoDir
+      lift $ logInfo $ "isolated installing Cabal to " <> T.pack isoDir
       liftE $ installCabalUnpacked workdir isoDir Nothing
 
     Nothing -> do                 -- regular install
@@ -460,19 +458,22 @@ installCabalBindist dlinfo ver isoFilepath = do
       when (maybe True (ver >=) lInstCabal) $ liftE $ setCabal ver
 
 -- | Install an unpacked cabal distribution.
-installCabalUnpacked :: (MonadLogger m, MonadCatch m, MonadIO m)
+installCabalUnpacked :: (MonadReader env m, HasLog env, MonadCatch m, MonadIO m)
               => FilePath      -- ^ Path to the unpacked cabal bindist (where the executable resides)
               -> FilePath      -- ^ Path to install to
               -> Maybe Version -- ^ Nothing for isolated install
               -> Excepts '[CopyError, FileAlreadyExistsError] m ()
 installCabalUnpacked path inst mver' = do
-  lift $ $(logInfo) "Installing cabal"
+  lift $ logInfo "Installing cabal"
   let cabalFile = "cabal"
   liftIO $ createDirRecursive' inst
   let destFileName = cabalFile
         <> maybe "" (("-" <>) . T.unpack . prettyVer) mver'
         <> exeExt
   let destPath = inst </> destFileName
+
+  liftE $ throwIfFileAlreadyExists destPath
+    
   handleIO (throwE . CopyError . show) $ liftIO $ copyFile
     (path </> cabalFile <> exeExt)
     destPath
@@ -488,7 +489,7 @@ installCabalBin :: ( MonadMask m
                    , HasGHCupInfo env
                    , HasDirs env
                    , HasSettings env
-                   , MonadLogger m
+                   , HasLog env
                    , MonadResource m
                    , MonadIO m
                    , MonadUnliftIO m
@@ -523,7 +524,7 @@ installHLSBindist :: ( MonadMask m
                      , HasPlatformReq env
                      , HasDirs env
                      , HasSettings env
-                     , MonadLogger m
+                     , HasLog env
                      , MonadResource m
                      , MonadIO m
                      , MonadUnliftIO m
@@ -542,11 +543,12 @@ installHLSBindist :: ( MonadMask m
                         , UnknownArchive
                         , TarDirDoesNotExist
                         , ArchiveResult
+                        , FileAlreadyExistsError
                         ]
                        m
                        ()
 installHLSBindist dlinfo ver isoFilepath = do
-  lift $ $(logDebug) $ "Requested to install hls version " <> prettyVer ver
+  lift $ logDebug $ "Requested to install hls version " <> prettyVer ver
 
   PlatformRequest {..} <- lift getPlatformReq
   Dirs {..} <- lift getDirs
@@ -572,7 +574,7 @@ installHLSBindist dlinfo ver isoFilepath = do
 
   case isoFilepath of
     Just isoDir -> do
-      lift $ $(logInfo) $ "isolated installing HLS to " <> T.pack isoDir
+      lift $ logInfo $ "isolated installing HLS to " <> T.pack isoDir
       liftE $ installHLSUnpacked workdir isoDir Nothing
 
     Nothing -> do
@@ -585,13 +587,13 @@ installHLSBindist dlinfo ver isoFilepath = do
 
 
 -- | Install an unpacked hls distribution.
-installHLSUnpacked :: (MonadFail m, MonadLogger m, MonadCatch m, MonadIO m)
+installHLSUnpacked :: (MonadReader env m, MonadFail m, HasLog env, MonadCatch m, MonadIO m)
               => FilePath      -- ^ Path to the unpacked hls bindist (where the executable resides)
               -> FilePath      -- ^ Path to install to
               -> Maybe Version -- ^ Nothing for isolated install
-              -> Excepts '[CopyError] m ()
+              -> Excepts '[CopyError, FileAlreadyExistsError] m ()
 installHLSUnpacked path inst mver' = do
-  lift $ $(logInfo) "Installing HLS"
+  lift $ logInfo "Installing HLS"
   liftIO $ createDirRecursive' inst
 
   -- install haskell-language-server-<ghcver>
@@ -605,20 +607,32 @@ installHLSUnpacked path inst mver' = do
     let toF = dropSuffix exeExt f
               <> maybe "" (("~" <>) . T.unpack . prettyVer) mver'
               <> exeExt
+
+    let srcPath = path </> f
+    let destPath = inst </> toF
+
+    liftE $ throwIfFileAlreadyExists destPath
+      
     handleIO (throwE . CopyError . show) $ liftIO $ copyFile
-      (path </> f)
-      (inst </> toF)
-    lift $ chmod_755 (inst </> toF)
+      srcPath
+      destPath
+    lift $ chmod_755 destPath
 
   -- install haskell-language-server-wrapper
   let wrapper = "haskell-language-server-wrapper"
       toF = wrapper
             <> maybe "" (("-" <>) . T.unpack . prettyVer) mver'
             <> exeExt
+      srcWrapperPath = path </> wrapper <> exeExt
+      destWrapperPath = inst </> toF
+
+  liftE $ throwIfFileAlreadyExists destWrapperPath
+      
   handleIO (throwE . CopyError . show) $ liftIO $ copyFile
-    (path </> wrapper <> exeExt)
-    (inst </> toF)
-  lift $ chmod_755 (inst </> toF)
+    srcWrapperPath
+    destWrapperPath
+    
+  lift $ chmod_755 destWrapperPath
 
 -- | Installs hls binaries @haskell-language-server-\<ghcver\>@
 -- into @~\/.ghcup\/bin/@, as well as @haskell-languager-server-wrapper@.
@@ -629,7 +643,7 @@ installHLSBin :: ( MonadMask m
                  , HasGHCupInfo env
                  , HasDirs env
                  , HasSettings env
-                 , MonadLogger m
+                 , HasLog env
                  , MonadResource m
                  , MonadIO m
                  , MonadUnliftIO m
@@ -647,6 +661,7 @@ installHLSBin :: ( MonadMask m
                     , UnknownArchive
                     , TarDirDoesNotExist
                     , ArchiveResult
+                    , FileAlreadyExistsError
                     ]
                    m
                    ()
@@ -665,7 +680,7 @@ installStackBin :: ( MonadMask m
                    , HasSettings env
                    , HasPlatformReq env
                    , HasGHCupInfo env
-                   , MonadLogger m
+                   , HasLog env
                    , MonadResource m
                    , MonadIO m
                    , MonadUnliftIO m
@@ -683,6 +698,7 @@ installStackBin :: ( MonadMask m
                       , UnknownArchive
                       , TarDirDoesNotExist
                       , ArchiveResult
+                      , FileAlreadyExistsError
                       ]
                      m
                      ()
@@ -699,7 +715,7 @@ installStackBindist :: ( MonadMask m
                        , HasPlatformReq env
                        , HasDirs env
                        , HasSettings env
-                       , MonadLogger m
+                       , HasLog env
                        , MonadResource m
                        , MonadIO m
                        , MonadUnliftIO m
@@ -718,11 +734,12 @@ installStackBindist :: ( MonadMask m
                           , UnknownArchive
                           , TarDirDoesNotExist
                           , ArchiveResult
+                          , FileAlreadyExistsError
                           ]
                          m
                          ()
 installStackBindist dlinfo ver isoFilepath = do
-  lift $ $(logDebug) $ "Requested to install stack version " <> prettyVer ver
+  lift $ logDebug $ "Requested to install stack version " <> prettyVer ver
 
   PlatformRequest {..} <- lift getPlatformReq
   Dirs {..} <- lift getDirs
@@ -747,7 +764,7 @@ installStackBindist dlinfo ver isoFilepath = do
 
   case isoFilepath of
     Just isoDir -> do                 -- isolated install
-      lift $ $(logInfo) $ "isolated installing Stack to " <> T.pack isoDir
+      lift $ logInfo $ "isolated installing Stack to " <> T.pack isoDir
       liftE $ installStackUnpacked workdir isoDir Nothing
     Nothing -> do                     -- regular install
       liftE $ installStackUnpacked workdir binDir (Just ver)
@@ -759,19 +776,22 @@ installStackBindist dlinfo ver isoFilepath = do
 
 
 -- | Install an unpacked stack distribution.
-installStackUnpacked :: (MonadLogger m, MonadCatch m, MonadIO m)
+installStackUnpacked :: (MonadReader env m, HasLog env, MonadCatch m, MonadIO m)
               => FilePath      -- ^ Path to the unpacked stack bindist (where the executable resides)
               -> FilePath      -- ^ Path to install to
               -> Maybe Version -- ^ Nothing for isolated installs
-              -> Excepts '[CopyError] m ()
+              -> Excepts '[CopyError, FileAlreadyExistsError] m ()
 installStackUnpacked path inst mver' = do
-  lift $ $(logInfo) "Installing stack"
+  lift $ logInfo "Installing stack"
   let stackFile = "stack"
   liftIO $ createDirRecursive' inst
   let destFileName = stackFile
                      <> maybe "" (("-" <>) .  T.unpack . prettyVer) mver'
                      <> exeExt
-  let destPath = inst </> destFileName
+      destPath = inst </> destFileName
+
+  liftE $ throwIfFileAlreadyExists destPath
+      
   handleIO (throwE . CopyError . show) $ liftIO $ copyFile
     (path </> stackFile <> exeExt)
     destPath
@@ -795,7 +815,7 @@ installStackUnpacked path inst mver' = do
 -- for 'SetGHCOnly' constructor.
 setGHC :: ( MonadReader env m
           , HasDirs env
-          , MonadLogger m
+          , HasLog env
           , MonadThrow m
           , MonadFail m
           , MonadIO m
@@ -829,7 +849,7 @@ setGHC ver sghc = do
       SetGHCOnly -> pure $ Just file
       SetGHC_XY  -> do
         handle
-            (\(e :: ParseError) -> lift $ $(logWarn) (T.pack $ displayException e) >> pure Nothing)
+            (\(e :: ParseError) -> lift $ logWarn (T.pack $ displayException e) >> pure Nothing)
           $ do 
             (mj, mi) <- getMajorMinorV (_tvVersion ver)
             let major' = intToText mj <> "." <> intToText mi
@@ -854,7 +874,7 @@ setGHC ver sghc = do
   symlinkShareDir :: ( MonadReader env m
                      , HasDirs env
                      , MonadIO m
-                     , MonadLogger m
+                     , HasLog env
                      , MonadCatch m
                      , MonadMask m
                      )
@@ -871,9 +891,9 @@ setGHC ver sghc = do
         whenM (liftIO $ doesDirectoryExist fullsharedir) $ do
           let fullF   = destdir </> sharedir
           let targetF = "." </> "ghc" </> ver' </> sharedir
-          $(logDebug) $ "rm -f " <> T.pack fullF
+          logDebug $ "rm -f " <> T.pack fullF
           hideError doesNotExistErrorType $ rmDirectoryLink fullF
-          $(logDebug) $ "ln -s " <> T.pack targetF <> " " <> T.pack fullF
+          logDebug $ "ln -s " <> T.pack targetF <> " " <> T.pack fullF
           liftIO
 #if defined(IS_WINDOWS)
             -- On windows we need to be more permissive
@@ -891,7 +911,7 @@ setGHC ver sghc = do
 setCabal :: ( MonadMask m
             , MonadReader env m
             , HasDirs env
-            , MonadLogger m
+            , HasLog env
             , MonadThrow m
             , MonadFail m
             , MonadIO m
@@ -923,7 +943,7 @@ setCabal ver = do
 setHLS :: ( MonadCatch m
           , MonadReader env m
           , HasDirs env
-          , MonadLogger m
+          , HasLog env
           , MonadThrow m
           , MonadFail m
           , MonadIO m
@@ -939,7 +959,7 @@ setHLS ver = do
   -- selected version, so we could end up with stray or incorrect symlinks.
   oldSyms <- lift hlsSymlinks
   forM_ oldSyms $ \f -> do
-    lift $ $(logDebug) $ "rm " <> T.pack (binDir </> f)
+    lift $ logDebug $ "rm " <> T.pack (binDir </> f)
     lift $ rmLink (binDir </> f)
 
   -- set haskell-language-server-<ghcver> symlinks
@@ -964,7 +984,7 @@ setHLS ver = do
 setStack :: ( MonadMask m
             , MonadReader env m
             , HasDirs env
-            , MonadLogger m
+            , HasLog env
             , MonadThrow m
             , MonadFail m
             , MonadIO m
@@ -1027,9 +1047,9 @@ availableToolVersions av tool = view
 -- | List all versions from the download info, as well as stray
 -- versions.
 listVersions :: ( MonadCatch m
-                , MonadLogger m
+                , HasLog env
                 , MonadThrow m
-                , MonadLogger m
+                , HasLog env
                 , MonadIO m
                 , MonadReader env m
                 , HasDirs env
@@ -1085,7 +1105,7 @@ listVersions lt' criteria = do
                , MonadReader env m
                , HasDirs env
                , MonadThrow m
-               , MonadLogger m
+               , HasLog env
                , MonadIO m
                )
             => Map.Map Version VersionInfo
@@ -1125,7 +1145,7 @@ listVersions lt' criteria = do
           , ..
           }
       Left e -> do
-        $(logWarn)
+        logWarn
           $ "Could not parse version of stray directory" <> T.pack e
         pure Nothing
 
@@ -1133,7 +1153,7 @@ listVersions lt' criteria = do
                  , HasDirs env
                  , MonadCatch m
                  , MonadThrow m
-                 , MonadLogger m
+                 , HasLog env
                  , MonadIO m
                  )
             => Map.Map Version VersionInfo
@@ -1160,7 +1180,7 @@ listVersions lt' criteria = do
               , ..
               }
       Left e -> do
-        $(logWarn)
+        logWarn
           $ "Could not parse version of stray directory" <> T.pack e
         pure Nothing
 
@@ -1168,7 +1188,7 @@ listVersions lt' criteria = do
               , HasDirs env
               , MonadCatch m
               , MonadThrow m
-              , MonadLogger m
+              , HasLog env
               , MonadIO m)
            => Map.Map Version VersionInfo
            -> Maybe Version
@@ -1194,7 +1214,7 @@ listVersions lt' criteria = do
               , ..
               }
       Left e -> do
-        $(logWarn)
+        logWarn
           $ "Could not parse version of stray directory" <> T.pack e
         pure Nothing
 
@@ -1202,7 +1222,7 @@ listVersions lt' criteria = do
                  , HasDirs env
                  , MonadCatch m
                  , MonadThrow m
-                 , MonadLogger m
+                 , HasLog env
                  , MonadIO m
                  )
               => Map.Map Version VersionInfo
@@ -1229,7 +1249,7 @@ listVersions lt' criteria = do
               , ..
               }
       Left e -> do
-        $(logWarn)
+        logWarn
           $ "Could not parse version of stray directory" <> T.pack e
         pure Nothing
 
@@ -1254,7 +1274,7 @@ listVersions lt' criteria = do
                                            }
 
   -- NOTE: this are not cross ones, because no bindists
-  toListResult :: ( MonadLogger m
+  toListResult :: ( HasLog env
                   , MonadReader env m
                   , HasDirs env
                   , HasGHCupInfo env
@@ -1356,7 +1376,7 @@ listVersions lt' criteria = do
 rmGHCVer :: ( MonadReader env m
             , HasDirs env
             , MonadThrow m
-            , MonadLogger m
+            , HasLog env
             , MonadIO m
             , MonadFail m
             , MonadCatch m
@@ -1373,23 +1393,23 @@ rmGHCVer ver = do
 
   -- this isn't atomic, order matters
   when isSetGHC $ do
-    lift $ $(logInfo) "Removing ghc symlinks"
+    lift $ logInfo "Removing ghc symlinks"
     liftE $ rmPlain (_tvTarget ver)
 
-  lift $ $(logInfo) "Removing ghc-x.y.z symlinks"
+  lift $ logInfo "Removing ghc-x.y.z symlinks"
   liftE $ rmMinorSymlinks ver
 
-  lift $ $(logInfo) "Removing/rewiring ghc-x.y symlinks"
+  lift $ logInfo "Removing/rewiring ghc-x.y symlinks"
   -- first remove
   handle (\(_ :: ParseError) -> pure ()) $ liftE $ rmMajorSymlinks ver
   -- then fix them (e.g. with an earlier version)
 
-  lift $ $(logInfo) $ "Removing directory recursively: " <> T.pack dir
+  lift $ logInfo $ "Removing directory recursively: " <> T.pack dir
   lift $ recyclePathForcibly dir
 
   v' <-
     handle
-      (\(e :: ParseError) -> lift $ $(logWarn) (T.pack $ displayException e) >> pure Nothing)
+      (\(e :: ParseError) -> lift $ logWarn (T.pack $ displayException e) >> pure Nothing)
     $ fmap Just
     $ getMajorMinorV (_tvVersion ver)
   forM_ v' $ \(mj, mi) -> lift (getGHCForMajor mj mi (_tvTarget ver))
@@ -1406,7 +1426,7 @@ rmCabalVer :: ( MonadMask m
               , MonadReader env m
               , HasDirs env
               , MonadThrow m
-              , MonadLogger m
+              , HasLog env
               , MonadIO m
               , MonadFail m
               , MonadCatch m
@@ -1437,7 +1457,7 @@ rmHLSVer :: ( MonadMask m
             , MonadReader env m
             , HasDirs env
             , MonadThrow m
-            , MonadLogger m
+            , HasLog env
             , MonadIO m
             , MonadFail m
             , MonadCatch m
@@ -1460,7 +1480,7 @@ rmHLSVer ver = do
     oldSyms <- lift hlsSymlinks
     forM_ oldSyms $ \f -> do
       let fullF = binDir </> f
-      lift $ $(logDebug) $ "rm " <> T.pack fullF
+      lift $ logDebug $ "rm " <> T.pack fullF
       lift $ rmLink fullF
     -- set latest hls
     hlsVers <- lift $ fmap rights getInstalledHLSs
@@ -1475,7 +1495,7 @@ rmStackVer :: ( MonadMask m
               , MonadReader env m
               , HasDirs env
               , MonadThrow m
-              , MonadLogger m
+              , HasLog env
               , MonadIO m
               , MonadFail m
               , MonadCatch m
@@ -1505,7 +1525,7 @@ rmGhcup :: ( MonadReader env m
            , HasDirs env
            , MonadIO m
            , MonadCatch m
-           , MonadLogger m
+           , HasLog env
            , MonadMask m
            , MonadUnliftIO m
            )
@@ -1530,7 +1550,7 @@ rmGhcup = do
 
   let areEqualPaths = equalFilePath p1 p2
 
-  unless areEqualPaths $ $logWarn $ nonStandardInstallLocationMsg currentRunningExecPath
+  unless areEqualPaths $ logWarn $ nonStandardInstallLocationMsg currentRunningExecPath
 
 #if defined(IS_WINDOWS)
   -- since it doesn't seem possible to delete a running exe on windows
@@ -1546,7 +1566,7 @@ rmGhcup = do
 
   where
     handlePathNotPresent fp _err = do
-      $logDebug $ "Error: The path does not exist, " <> T.pack fp
+      logDebug $ "Error: The path does not exist, " <> T.pack fp
       pure fp
 
     nonStandardInstallLocationMsg path = T.pack $
@@ -1556,7 +1576,7 @@ rmGhcup = do
 
 rmTool :: ( MonadReader env m
           , HasDirs env
-          , MonadLogger m
+          , HasLog env
           , MonadFail m
           , MonadMask m
           , MonadUnliftIO m)
@@ -1576,7 +1596,7 @@ rmTool ListResult {lVer, lTool, lCross} = do
 rmGhcupDirs :: ( MonadReader env m
                , HasDirs env
                , MonadIO m
-               , MonadLogger m
+               , HasLog env
                , MonadCatch m
                , MonadMask m )
             => m [FilePath]
@@ -1603,7 +1623,7 @@ rmGhcupDirs = do
   handleRm $ rmBinDir binDir
   handleRm $ rmDir recycleDir
 #if defined(IS_WINDOWS)
-  $logInfo $ "removing " <> T.pack (baseDir </> "msys64")
+  logInfo $ "removing " <> T.pack (baseDir </> "msys64")
   handleRm $ rmPathForcibly (baseDir </> "msys64")
 #endif
 
@@ -1614,27 +1634,27 @@ rmGhcupDirs = do
   hideErrorDef [doesNotExistErrorType] [] $ reportRemainingFiles baseDir
 
   where
-    handleRm :: (MonadCatch m, MonadLogger m)  => m () -> m ()
-    handleRm = handleIO (\e -> $logDebug $ "Part of the cleanup action failed with error: " <> T.pack (displayException e) <> "\n"
+    handleRm :: (MonadReader env m, MonadCatch m, HasLog env, MonadIO m)  => m () -> m ()
+    handleRm = handleIO (\e -> logDebug $ "Part of the cleanup action failed with error: " <> T.pack (displayException e) <> "\n"
                                 <> "continuing regardless...")
 
-    rmEnvFile :: (MonadLogger m, MonadReader env m, HasDirs env, MonadMask m, MonadIO m, MonadCatch m) => FilePath -> m ()
+    rmEnvFile :: (HasLog env, MonadReader env m, HasDirs env, MonadMask m, MonadIO m, MonadCatch m) => FilePath -> m ()
     rmEnvFile enFilePath = do
-      $logInfo "Removing Ghcup Environment File"
+      logInfo "Removing Ghcup Environment File"
       hideErrorDef [permissionErrorType] () $ deleteFile enFilePath
 
-    rmConfFile :: (MonadLogger m, MonadReader env m, HasDirs env, MonadMask m, MonadIO m, MonadCatch m) => FilePath -> m ()
+    rmConfFile :: (HasLog env, MonadReader env m, HasDirs env, MonadMask m, MonadIO m, MonadCatch m) => FilePath -> m ()
     rmConfFile confFilePath = do
-      $logInfo "removing Ghcup Config File"
+      logInfo "removing Ghcup Config File"
       hideErrorDef [permissionErrorType] () $ deleteFile confFilePath
 
-    rmDir :: (MonadLogger m, MonadReader env m, HasDirs env, MonadMask m, MonadIO m, MonadCatch m) => FilePath -> m ()
+    rmDir :: (HasLog env, MonadReader env m, HasDirs env, MonadMask m, MonadIO m, MonadCatch m) => FilePath -> m ()
     rmDir dir =
       -- 'getDirectoryContentsRecursive' is lazy IO. In case
       -- an error leaks through, we catch it here as well,
       -- althought 'deleteFile' should already handle it.
       hideErrorDef [doesNotExistErrorType] () $ do
-        $logInfo $ "removing " <> T.pack dir
+        logInfo $ "removing " <> T.pack dir
         contents <- liftIO $ getDirectoryContentsRecursive dir
         forM_ contents (deleteFile . (dir </>))
 
@@ -1707,7 +1727,7 @@ getDebugInfo :: ( Alternative m
                 , MonadFail m
                 , MonadReader env m
                 , HasDirs env
-                , MonadLogger m
+                , HasLog env
                 , MonadCatch m
                 , MonadIO m
                 )
@@ -1743,7 +1763,7 @@ compileGHC :: ( MonadMask m
               , HasSettings env
               , MonadThrow m
               , MonadResource m
-              , MonadLogger m
+              , HasLog env
               , MonadIO m
               , MonadUnliftIO m
               , MonadFail m
@@ -1783,7 +1803,7 @@ compileGHC targetGhc ov bstrap jobs mbuildConfig patchdir aargs buildFlavour had
     (workdir, tmpUnpack, tver) <- case targetGhc of
       -- unpack from version tarball
       Left tver -> do
-        lift $ $(logDebug) $ "Requested to compile: " <> tVerToText tver <> " with " <> either prettyVer T.pack bstrap
+        lift $ logDebug $ "Requested to compile: " <> tVerToText tver <> " with " <> either prettyVer T.pack bstrap
 
         -- download source tarball
         dlInfo <-
@@ -1808,7 +1828,7 @@ compileGHC targetGhc ov bstrap jobs mbuildConfig patchdir aargs buildFlavour had
         let git args = execLogged "git" ("--no-pager":args) (Just tmpUnpack) "git" Nothing
         tver <- reThrowAll @_ @'[ProcessError] DownloadFailed $ do
           let rep = fromMaybe "https://gitlab.haskell.org/ghc/ghc.git" repo
-          lift $ $(logInfo) $ "Fetching git repo " <> T.pack rep <> " at ref " <> T.pack ref <> " (this may take a while)"
+          lift $ logInfo $ "Fetching git repo " <> T.pack rep <> " at ref " <> T.pack ref <> " (this may take a while)"
           lEM $ git [ "init" ]
           lEM $ git [ "remote"
                     , "add"
@@ -1835,7 +1855,7 @@ compileGHC targetGhc ov bstrap jobs mbuildConfig patchdir aargs buildFlavour had
             ExitFailure c -> fail ("Could not figure out GHC project version. Exit code was: " <> show c <> ". Error was: " <> T.unpack (decUTF8Safe' _stdErr))
 
         liftE $ catchWarn $ lEM @_ @'[ProcessError] $ darwinNotarization _rPlatform tmpUnpack
-        lift $ $(logInfo) $ "Git version " <> T.pack ref <> " corresponds to GHC version " <> prettyVer tver
+        lift $ logInfo $ "Git version " <> T.pack ref <> " corresponds to GHC version " <> prettyVer tver
 
         pure (tmpUnpack, tmpUnpack, GHCTargetVersion Nothing tver)
     -- the version that's installed may differ from the
@@ -1847,10 +1867,10 @@ compileGHC targetGhc ov bstrap jobs mbuildConfig patchdir aargs buildFlavour had
     when alreadyInstalled $ do
       case isolateDir of
         Just isoDir ->
-          lift $ $(logWarn) $ "GHC " <> T.pack (prettyShow tver) <> " already installed. Isolate installing to " <> T.pack isoDir
+          lift $ logWarn $ "GHC " <> T.pack (prettyShow tver) <> " already installed. Isolate installing to " <> T.pack isoDir
         Nothing ->
-          lift $ $(logWarn) $ "GHC " <> T.pack (prettyShow tver) <> " already installed. Will overwrite existing version."
-      lift $ $(logWarn)
+          lift $ logWarn $ "GHC " <> T.pack (prettyShow tver) <> " already installed. Will overwrite existing version."
+      lift $ logWarn
         "...waiting for 10 seconds before continuing, you can still abort..."
       liftIO $ threadDelay 10000000 -- give the user a sec to intervene
 
@@ -1877,7 +1897,7 @@ compileGHC targetGhc ov bstrap jobs mbuildConfig patchdir aargs buildFlavour had
       Nothing ->
         -- only remove old ghc in regular installs
         when alreadyInstalled $ do
-          lift $ $(logInfo) "Deleting existing installation"
+          lift $ logInfo "Deleting existing installation"
           liftE $ rmGHCVer tver
           
       _ -> pure ()
@@ -1929,7 +1949,7 @@ endif|]
                            , HasPlatformReq env
                            , MonadThrow m
                            , MonadCatch m
-                           , MonadLogger m
+                           , HasLog env
                            , MonadIO m
                            , MonadFail m
                            )
@@ -1952,7 +1972,7 @@ endif|]
 
     liftE $ configureBindist bghc tver workdir ghcdir
 
-    lift $ $(logInfo) "Building (this may take a while)..."
+    lift $ logInfo "Building (this may take a while)..."
     hadrian_build <- liftE $ findHadrianFile workdir
     lEM $ execLogged hadrian_build
                           ( maybe [] (\j  -> ["-j" <> show j]         ) jobs
@@ -1991,7 +2011,7 @@ endif|]
                         , HasPlatformReq env
                         , MonadThrow m
                         , MonadCatch m
-                        , MonadLogger m
+                        , HasLog env
                         , MonadIO m
                         , MonadFail m
                         )
@@ -2022,15 +2042,15 @@ endif|]
 
     liftE $ checkBuildConfig (build_mk workdir)
 
-    lift $ $(logInfo) "Building (this may take a while)..."
+    lift $ logInfo "Building (this may take a while)..."
     lEM $ make (maybe [] (\j -> ["-j" <> fS (show j)]) jobs) (Just workdir)
 
     if | isCross tver -> do
-          lift $ $(logInfo) "Installing cross toolchain..."
+          lift $ logInfo "Installing cross toolchain..."
           lEM $ make ["install"] (Just workdir)
           pure Nothing
        | otherwise -> do
-          lift $ $(logInfo) "Creating bindist..."
+          lift $ logInfo "Creating bindist..."
           lEM $ make ["binary-dist"] (Just workdir)
           [tar] <- liftIO $ findFiles
             workdir
@@ -2049,7 +2069,7 @@ endif|]
                  , MonadIO m
                  , MonadThrow m
                  , MonadCatch m
-                 , MonadLogger m
+                 , HasLog env
                  )
               => GHCTargetVersion
               -> FilePath           -- ^ tar file
@@ -2084,10 +2104,10 @@ endif|]
     let tarPath = cacheDir </> tarName
     handleIO (throwE . CopyError . show) $ liftIO $ copyFile (workdir </> tar)
                                                              tarPath
-    lift $ $(logInfo) $ "Copied bindist to " <> T.pack tarPath
+    lift $ logInfo $ "Copied bindist to " <> T.pack tarPath
     pure tarPath
 
-  checkBuildConfig :: (MonadCatch m, MonadIO m, MonadLogger m)
+  checkBuildConfig :: (MonadReader env m, MonadCatch m, MonadIO m, HasLog env)
                    => FilePath
                    -> Excepts
                         '[FileDoesNotExistError, InvalidBuildConfig]
@@ -2110,7 +2130,7 @@ endif|]
 
     forM_ buildFlavour $ \bf ->
       when (T.pack ("BuildFlavour = " <> bf) `notElem` lines') $ do
-        lift $ $(logWarn) $ "Customly specified build config overwrites --flavour=" <> T.pack bf <> " switch! Waiting 5 seconds..."
+        lift $ logWarn $ "Customly specified build config overwrites --flavour=" <> T.pack bf <> " switch! Waiting 5 seconds..."
         liftIO $ threadDelay 5000000
 
   addBuildFlavourToConf bc = case buildFlavour of
@@ -2127,7 +2147,7 @@ endif|]
                       , HasPlatformReq env
                       , MonadThrow m
                       , MonadCatch m
-                      , MonadLogger m
+                      , HasLog env
                       , MonadIO m
                       , MonadFail m
                       )
@@ -2146,7 +2166,7 @@ endif|]
                         m
                         ()
   configureBindist bghc tver workdir ghcdir = do
-    lift $ $(logInfo) [s|configuring build|]
+    lift $ logInfo [s|configuring build|]
     
     forM_ patchdir (\dir -> liftE $ applyPatches dir workdir)
 
@@ -2210,7 +2230,7 @@ upgradeGHCup :: ( MonadMask m
                 , HasGHCupInfo env
                 , HasSettings env
                 , MonadCatch m
-                , MonadLogger m
+                , HasLog env
                 , MonadThrow m
                 , MonadResource m
                 , MonadIO m
@@ -2232,7 +2252,7 @@ upgradeGHCup mtarget force' = do
   Dirs {..} <- lift getDirs
   GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
 
-  lift $ $(logInfo) "Upgrading GHCup..."
+  lift $ logInfo "Upgrading GHCup..."
   let latestVer = fromJust $ fst <$> getLatest dls GHCup
   when (not force' && (latestVer <= pvpToVersion ghcUpVer)) $ throwE NoUpdate
   dli   <- liftE $ getDownloadInfo GHCup latestVer
@@ -2241,20 +2261,20 @@ upgradeGHCup mtarget force' = do
   p <- liftE $ download (_dlUri dli) (Just (_dlHash dli)) tmp (Just fn) False
   let destDir = takeDirectory destFile
       destFile = fromMaybe (binDir </> fn) mtarget
-  lift $ $(logDebug) $ "mkdir -p " <> T.pack destDir
+  lift $ logDebug $ "mkdir -p " <> T.pack destDir
   liftIO $ createDirRecursive' destDir
-  lift $ $(logDebug) $ "rm -f " <> T.pack destFile
+  lift $ logDebug $ "rm -f " <> T.pack destFile
   lift $ hideError NoSuchThing $ recycleFile destFile
-  lift $ $(logDebug) $ "cp " <> T.pack p <> " " <> T.pack destFile
+  lift $ logDebug $ "cp " <> T.pack p <> " " <> T.pack destFile
   handleIO (throwE . CopyError . show) $ liftIO $ copyFile p
                                                            destFile
   lift $ chmod_755 destFile
 
   liftIO (isInPath destFile) >>= \b -> unless b $
-    lift $ $(logWarn) $ T.pack (takeFileName destFile) <> " is not in PATH! You have to add it in order to use ghcup."
+    lift $ logWarn $ T.pack (takeFileName destFile) <> " is not in PATH! You have to add it in order to use ghcup."
   liftIO (isShadowed destFile) >>= \case
     Nothing -> pure ()
-    Just pa -> lift $ $(logWarn) $ "ghcup is shadowed by "
+    Just pa -> lift $ logWarn $ "ghcup is shadowed by "
       <> T.pack pa
       <> ". The upgrade will not be in effect, unless you remove "
       <> T.pack pa
@@ -2278,7 +2298,7 @@ upgradeGHCup mtarget force' = do
 -- both installing from source and bindist.
 postGHCInstall :: ( MonadReader env m
                   , HasDirs env
-                  , MonadLogger m
+                  , HasLog env
                   , MonadThrow m
                   , MonadFail m
                   , MonadIO m
@@ -2294,7 +2314,7 @@ postGHCInstall ver@GHCTargetVersion {..} = do
   -- Create ghc-x.y symlinks. This may not be the current
   -- version, create it regardless.
   v' <-
-    handle (\(e :: ParseError) -> lift $ $(logWarn) (T.pack $ displayException e) >> pure Nothing)
+    handle (\(e :: ParseError) -> lift $ logWarn (T.pack $ displayException e) >> pure Nothing)
     $ fmap Just
     $ getMajorMinorV _tvVersion
   forM_ v' $ \(mj, mi) -> lift (getGHCForMajor mj mi _tvTarget)
@@ -2310,7 +2330,7 @@ postGHCInstall ver@GHCTargetVersion {..} = do
 --   * for ghcup, this reports the location of the currently running executable
 whereIsTool :: ( MonadReader env m
                , HasDirs env
-               , MonadLogger m
+               , HasLog env
                , MonadThrow m
                , MonadFail m
                , MonadIO m
@@ -2348,3 +2368,10 @@ whereIsTool tool ver@GHCTargetVersion {..} = do
       liftIO $ canonicalizePath currentRunningExecPath
 
 
+throwIfFileAlreadyExists :: ( MonadIO m ) =>
+                            FilePath ->
+                            Excepts '[FileAlreadyExistsError] m ()
+
+throwIfFileAlreadyExists fp = whenM (checkFileAlreadyExists fp)
+                                (throwE $ FileAlreadyExistsError fp)
+

lib/GHCup/Download.hs

@@ -1,10 +1,7 @@
 {-# LANGUAGE CPP                   #-}
 {-# LANGUAGE DataKinds             #-}
-{-# LANGUAGE DeriveGeneric         #-}
 {-# LANGUAGE FlexibleContexts      #-}
 {-# LANGUAGE OverloadedStrings     #-}
-{-# LANGUAGE QuasiQuotes           #-}
-{-# LANGUAGE TemplateHaskell       #-}
 {-# LANGUAGE TypeApplications      #-}
 {-# LANGUAGE TypeFamilies          #-}
 
@@ -34,8 +31,8 @@ import           GHCup.Download.Utils
 #endif
 import           GHCup.Errors
 import           GHCup.Types
-import           GHCup.Types.JSON               ( )
 import           GHCup.Types.Optics
+import           GHCup.Types.JSON               ( )
 import           GHCup.Utils.Dirs
 import           GHCup.Utils.File
 import           GHCup.Utils.Prelude
@@ -47,7 +44,6 @@ import           Control.Monad
 #if !MIN_VERSION_base(4,13,0)
 import           Control.Monad.Fail             ( MonadFail )
 #endif
-import           Control.Monad.Logger
 import           Control.Monad.Reader
 import           Control.Monad.Trans.Resource
                                          hiding ( throwM )
@@ -57,8 +53,8 @@ import           Data.ByteString                ( ByteString )
 #if defined(INTERNAL_DOWNLOADER)
 import           Data.CaseInsensitive           ( mk )
 #endif
-import           Data.List.Extra
 import           Data.Maybe
+import           Data.List
 import           Data.Time.Clock
 import           Data.Time.Clock.POSIX
 import           Data.Versions
@@ -72,6 +68,7 @@ import           Prelude                 hiding ( abs
                                                 , readFile
                                                 , writeFile
                                                 )
+import           Safe
 import           System.Directory
 import           System.Environment
 import           System.Exit
@@ -89,7 +86,7 @@ import qualified Data.Map.Strict               as M
 import qualified Data.Text                     as T
 import qualified Data.Text.IO                  as T
 import qualified Data.Text.Encoding            as E
-import qualified Data.Yaml                     as Y
+import qualified Data.YAML.Aeson               as Y
 
 
 
@@ -111,7 +108,7 @@ getDownloadsF :: ( FromJSONKey Tool
                  , HasDirs env
                  , MonadIO m
                  , MonadCatch m
-                 , MonadLogger m
+                 , HasLog env
                  , MonadThrow m
                  , MonadFail m
                  , MonadMask m
@@ -164,7 +161,7 @@ getBase :: ( MonadReader env m
            , MonadFail m
            , MonadIO m
            , MonadCatch m
-           , MonadLogger m
+           , HasLog env
            , MonadMask m
            )
         => URI
@@ -186,28 +183,27 @@ getBase uri = do
 
   -- if we didn't get a filepath from the download, use the cached yaml
   actualYaml <- maybe (lift $ yamlFromCache uri) pure mYaml
-  lift $ $(logDebug) $ "Decoding yaml at: " <> T.pack actualYaml
+  yamlContents <- liftIO $ L.readFile actualYaml
+  lift $ logDebug $ "Decoding yaml at: " <> T.pack actualYaml
 
   liftE
     . onE_ (onError actualYaml)
-    . lEM' @_ @_ @'[JSONError] JSONDecodeError
-    . fmap (first (\e -> unlines [displayException e
-                                 ,"Consider removing " <> actualYaml <> " manually."]))
-    . liftIO
-    . Y.decodeFileEither
-    $ actualYaml
+    . lE' @_ @_ @'[JSONError] JSONDecodeError
+    . first (\(_, e) -> unlines [e, "Consider removing " <> actualYaml <> " manually."])
+    . Y.decode1
+    $ yamlContents
  where
   -- On error, remove the etags file and set access time to 0. This should ensure the next invocation
   -- may re-download and succeed.
-  onError :: (MonadLogger m, MonadMask m, MonadCatch m, MonadIO m) => FilePath -> m ()
+  onError :: (MonadReader env m, HasLog env, MonadMask m, MonadCatch m, MonadIO m) => FilePath -> m ()
   onError fp = do
     let efp = etagsFile fp
-    handleIO (\e -> $(logWarn) $ "Couldn't remove file " <> T.pack efp <> ", error was: " <> T.pack (displayException e))
+    handleIO (\e -> logWarn $ "Couldn't remove file " <> T.pack efp <> ", error was: " <> T.pack (displayException e))
       (hideError doesNotExistErrorType $ rmFile efp)
     liftIO $ hideError doesNotExistErrorType $ setAccessTime fp (posixSecondsToUTCTime (fromIntegral @Int 0))
   warnCache s = do
-    lift $ $(logWarn) "Could not get download info, trying cached version (this may not be recent!)"
-    lift $ $(logDebug) $ "Error was: " <> T.pack s
+    lift $ logWarn "Could not get download info, trying cached version (this may not be recent!)"
+    lift $ logDebug $ "Error was: " <> T.pack s
 
   -- First check if the json file is in the ~/.ghcup/cache dir
   -- and check it's access time. If it has been accessed within the
@@ -221,7 +217,7 @@ getBase uri = do
              , MonadCatch m1
              , MonadIO m1
              , MonadFail m1
-             , MonadLogger m1
+             , HasLog env1
              , MonadMask m1
              )
           => URI
@@ -312,7 +308,7 @@ download :: ( MonadReader env m
             , HasDirs env
             , MonadMask m
             , MonadThrow m
-            , MonadLogger m
+            , HasLog env
             , MonadIO m
             )
          => URI
@@ -326,7 +322,7 @@ download uri eDigest dest mfn etags
   | scheme == "http"  = dl
   | scheme == "file"  = do
       let destFile' = T.unpack . decUTF8Safe $ path
-      lift $ $(logDebug) $ "using local file: " <> T.pack destFile'
+      lift $ logDebug $ "using local file: " <> T.pack destFile'
       forM_ eDigest (liftE . flip checkDigest destFile')
       pure destFile'
   | otherwise = throwE $ DownloadFailed (variantFromValue UnsupportedScheme)
@@ -335,7 +331,7 @@ download uri eDigest dest mfn etags
   scheme = view (uriSchemeL' % schemeBSL') uri
   dl = do
     destFile <- liftE . reThrowAll @_ @_ @'[DownloadFailed] DownloadFailed $ getDestFile
-    lift $ $(logInfo) $ "downloading: " <> uri' <> " as file " <> T.pack destFile
+    lift $ logInfo $ "downloading: " <> uri' <> " as file " <> T.pack destFile
 
     -- destination dir must exist
     liftIO $ createDirRecursive' dest
@@ -358,7 +354,7 @@ download uri eDigest dest mfn etags
                       dh <- liftIO $ emptySystemTempFile "curl-header"
                       flip finally (try @_ @SomeException $ rmFile dh) $
                         flip finally (try @_ @SomeException $ rmFile (destFile <.> "tmp")) $ do
-                          metag <- readETag destFile
+                          metag <- lift $ readETag destFile
                           liftE $ lEM @_ @'[ProcessError] $ exec "curl"
                               (o' ++ (if etags then ["--dump-header", dh] else [])
                                   ++ maybe [] (\t -> ["-H", "If-None-Match: " <> T.unpack t]) metag
@@ -370,14 +366,14 @@ download uri eDigest dest mfn etags
                           case fmap T.words . listToMaybe . fmap T.strip . T.lines . getLastHeader $ headers of
                             Just (http':sc:_)
                               | sc == "304"
-                              , T.pack "HTTP" `T.isPrefixOf` http' -> $logDebug "Status code was 304, not overwriting"
+                              , T.pack "HTTP" `T.isPrefixOf` http' -> lift $ logDebug "Status code was 304, not overwriting"
                               | T.pack "HTTP" `T.isPrefixOf` http' -> do
-                                  $logDebug $ "Status code was " <> sc <> ", overwriting"
+                                  lift $ logDebug $ "Status code was " <> sc <> ", overwriting"
                                   liftIO $ copyFile (destFile <.> "tmp") destFile
                             _ -> liftE $ throwE @_ @'[DownloadFailed] (DownloadFailed (toVariantAt @0 (MalformedHeaders headers)
                               :: V '[MalformedHeaders]))
 
-                          writeEtags destFile (parseEtags headers)
+                          lift $ writeEtags destFile (parseEtags headers)
                     else
                       liftE $ lEM @_ @'[ProcessError] $ exec "curl" 
                         (o' ++ ["-fL", "-o", destFile, T.unpack uri']) Nothing Nothing
@@ -387,20 +383,20 @@ download uri eDigest dest mfn etags
                     o' <- liftIO getWgetOpts
                     if etags
                       then do
-                        metag <- readETag destFile
+                        metag <- lift $ readETag destFile
                         let opts = o' ++ maybe [] (\t -> ["--header", "If-None-Match: " <> T.unpack t]) metag
                                       ++ ["-q", "-S", "-O", destFileTemp , T.unpack uri']
                         CapturedProcess {_exitCode, _stdErr} <- lift $ executeOut "wget" opts Nothing
                         case _exitCode of
                           ExitSuccess -> do
                             liftIO $ copyFile destFileTemp destFile
-                            writeEtags destFile (parseEtags (decUTF8Safe' _stdErr))
+                            lift $ writeEtags destFile (parseEtags (decUTF8Safe' _stdErr))
                           ExitFailure i'
                             | i' == 8
                             , Just _ <- find (T.pack "304 Not Modified" `T.isInfixOf`) . T.lines . decUTF8Safe' $ _stdErr
                                      -> do
-                                          $logDebug "Not modified, skipping download"
-                                          writeEtags destFile (parseEtags (decUTF8Safe' _stdErr))
+                                          lift $ logDebug "Not modified, skipping download"
+                                          lift $ writeEtags destFile (parseEtags (decUTF8Safe' _stdErr))
                             | otherwise -> throwE (NonZeroExit i' "wget" opts)
                       else do
                         let opts = o' ++ ["-O", destFileTemp , T.unpack uri']
@@ -411,14 +407,14 @@ download uri eDigest dest mfn etags
                   (https, host, fullPath, port) <- liftE $ uriToQuadruple uri
                   if etags
                     then do
-                      metag <- readETag destFile
+                      metag <- lift $ readETag destFile
                       let addHeaders = maybe mempty (\etag -> M.fromList [ (mk . E.encodeUtf8 . T.pack $ "If-None-Match"
                                                                          , E.encodeUtf8 etag)]) metag
                       liftE
                         $ catchE @HTTPNotModified @'[DownloadFailed] @'[] (\(HTTPNotModified etag) -> lift $ writeEtags destFile (pure $ Just etag))
                         $ do
                           r <- downloadToFile https host fullPath port destFile addHeaders
-                          writeEtags destFile (pure $ decUTF8Safe <$> getHeader r "etag")
+                          lift $ writeEtags destFile (pure $ decUTF8Safe <$> getHeader r "etag")
                     else void $ liftE $ catchE @HTTPNotModified
                                         @'[DownloadFailed]
                                    (\e@(HTTPNotModified _) ->
@@ -444,33 +440,33 @@ download uri eDigest dest mfn etags
   path = view pathL' uri
   uri' = decUTF8Safe (serializeURIRef' uri)
 
-  parseEtags :: (MonadLogger m, MonadIO m, MonadThrow m) => T.Text -> m (Maybe T.Text)
+  parseEtags :: (MonadReader env m, HasLog env, MonadIO m, MonadThrow m) => T.Text -> m (Maybe T.Text)
   parseEtags stderr = do
     let mEtag = find (\line -> T.pack "etag:" `T.isPrefixOf` T.toLower line) . fmap T.strip . T.lines . getLastHeader $ stderr
     case T.words <$> mEtag of
       (Just []) -> do
-        $logDebug "Couldn't parse etags, no input: "
+        logDebug "Couldn't parse etags, no input: "
         pure Nothing
       (Just [_, etag']) -> do
-        $logDebug $ "Parsed etag: " <> etag'
+        logDebug $ "Parsed etag: " <> etag'
         pure (Just etag')
       (Just xs) -> do
-        $logDebug ("Couldn't parse etags, unexpected input: " <> T.unwords xs)
+        logDebug ("Couldn't parse etags, unexpected input: " <> T.unwords xs)
         pure Nothing
       Nothing -> do
-        $logDebug "No etags header found"
+        logDebug "No etags header found"
         pure Nothing
 
-  writeEtags :: (MonadLogger m, MonadIO m, MonadThrow m) => FilePath -> m (Maybe T.Text) -> m ()
+  writeEtags :: (MonadReader env m, HasLog env, MonadIO m, MonadThrow m) => FilePath -> m (Maybe T.Text) -> m ()
   writeEtags destFile getTags = do
     getTags >>= \case
       Just t -> do
-        $logDebug $ "Writing etagsFile " <> T.pack (etagsFile destFile)
+        logDebug $ "Writing etagsFile " <> T.pack (etagsFile destFile)
         liftIO $ T.writeFile (etagsFile destFile) t
       Nothing ->
-        $logDebug "No etags files written"
+        logDebug "No etags files written"
 
-  readETag :: (MonadLogger m, MonadCatch m, MonadIO m) => FilePath -> m (Maybe T.Text)
+  readETag :: (MonadReader env m, HasLog env, MonadCatch m, MonadIO m) => FilePath -> m (Maybe T.Text)
   readETag fp = do
     e <- liftIO $ doesFileExist fp
     if e
@@ -478,13 +474,13 @@ download uri eDigest dest mfn etags
       rE <- try @_ @SomeException $ liftIO $ fmap stripNewline' $ T.readFile (etagsFile fp)
       case rE of
         (Right et) -> do
-          $logDebug $ "Read etag: " <> et
+          logDebug $ "Read etag: " <> et
           pure (Just et)
         (Left _) -> do
-          $logDebug "Etag file doesn't exist (yet)"
+          logDebug "Etag file doesn't exist (yet)"
           pure Nothing
     else do
-      $logDebug $ "Skipping and deleting etags file because destination file " <> T.pack fp <> " doesn't exist"
+      logDebug $ "Skipping and deleting etags file because destination file " <> T.pack fp <> " doesn't exist"
       liftIO $ hideError doesNotExistErrorType $ rmFile (etagsFile fp)
       pure Nothing
 
@@ -497,7 +493,7 @@ downloadCached :: ( MonadReader env m
                   , MonadMask m
                   , MonadResource m
                   , MonadThrow m
-                  , MonadLogger m
+                  , HasLog env
                   , MonadIO m
                   , MonadUnliftIO m
                   )
@@ -518,7 +514,7 @@ downloadCached' :: ( MonadReader env m
                    , HasSettings env
                    , MonadMask m
                    , MonadThrow m
-                   , MonadLogger m
+                   , HasLog env
                    , MonadIO m
                    , MonadUnliftIO m
                    )
@@ -552,7 +548,7 @@ checkDigest :: ( MonadReader env m
                , HasSettings env
                , MonadIO m
                , MonadThrow m
-               , MonadLogger m
+               , HasLog env
                )
             => T.Text     -- ^ the hash
             -> FilePath
@@ -562,7 +558,7 @@ checkDigest eDigest file = do
   let verify = not noVerify
   when verify $ do
     let p' = takeFileName file
-    lift $ $(logInfo) $ "verifying digest of: " <> T.pack p'
+    lift $ logInfo $ "verifying digest of: " <> T.pack p'
     c <- liftIO $ L.readFile file
     cDigest <- throwEither . E.decodeUtf8' . B16.encode . SHA256.hashlazy $ c
     when ((cDigest /= eDigest) && verify) $ throwE (DigestError cDigest eDigest)

lib/GHCup/Errors.hs

@@ -50,7 +50,7 @@ instance Pretty NoCompatiblePlatform where
   pPrint (NoCompatiblePlatform str') =
     text ("Could not find a compatible platform. Got: " ++ str')
 
--- | Unable to find a download for the requested versio/distro.
+-- | Unable to find a download for the requested version/distro.
 data NoDownload = NoDownload
   deriving Show
 

lib/GHCup/Platform.hs

@@ -20,6 +20,7 @@ module GHCup.Platform where
 
 import           GHCup.Errors
 import           GHCup.Types
+import           GHCup.Types.Optics
 import           GHCup.Types.JSON               ( )
 import           GHCup.Utils.File
 import           GHCup.Utils.Prelude
@@ -28,7 +29,6 @@ import           GHCup.Utils.String.QQ
 import           Control.Applicative
 import           Control.Exception.Safe
 import           Control.Monad
-import           Control.Monad.Logger
 import           Control.Monad.Reader
 import           Data.ByteString                ( ByteString )
 import           Data.Foldable
@@ -57,7 +57,7 @@ import qualified Data.Text.IO                  as T
 
 
 -- | Get the full platform request, consisting of architecture, distro, ...
-platformRequest :: (Alternative m, MonadFail m, MonadLogger m, MonadCatch m, MonadIO m)
+platformRequest :: (MonadReader env m, Alternative m, MonadFail m, HasLog env, MonadCatch m, MonadIO m)
                 => Excepts
                      '[NoCompatiblePlatform, NoCompatibleArch, DistroNotFound]
                      m
@@ -82,7 +82,7 @@ getArchitecture = case arch of
   what          -> Left (NoCompatibleArch what)
 
 
-getPlatform :: (Alternative m, MonadLogger m, MonadCatch m, MonadIO m, MonadFail m)
+getPlatform :: (Alternative m, MonadReader env m, HasLog env, MonadCatch m, MonadIO m, MonadFail m)
             => Excepts
                  '[NoCompatiblePlatform, DistroNotFound]
                  m
@@ -107,7 +107,7 @@ getPlatform = do
       pure $ PlatformResult { _platform = FreeBSD, _distroVersion = ver }
     "mingw32" -> pure PlatformResult { _platform = Windows, _distroVersion = Nothing }
     what -> throwE $ NoCompatiblePlatform what
-  lift $ $(logDebug) $ "Identified Platform as: " <> T.pack (prettyShow pfr)
+  lift $ logDebug $ "Identified Platform as: " <> T.pack (prettyShow pfr)
   pure pfr
  where
   getFreeBSDVersion = lift $ fmap _stdOut $ executeOut "freebsd-version" [] Nothing
@@ -138,12 +138,11 @@ getLinuxDistro = do
         | hasWord name ["exherbo"] -> Exherbo
         | hasWord name ["gentoo"]  -> Gentoo
         | hasWord name ["amazonlinux", "Amazon Linux"] -> AmazonLinux
+        | hasWord name ["solus"]   -> Solus
         | otherwise                -> UnknownLinux
   pure (distro, parsedVer)
  where
-  hasWord t matches = foldr (\x y -> match (regex x) (T.unpack t) || y)
-                            False
-                            matches
+  hasWord t = any (\x -> match (regex x) (T.unpack t))
    where
     regex x = makeRegexOpts compIgnoreCase execBlank ([s|\<|] ++ x ++ [s|\>|])
 

lib/GHCup/Types.hs

@@ -25,21 +25,17 @@ module GHCup.Types
   )
   where
 
-import           Control.Applicative
 import           Control.DeepSeq                ( NFData, rnf )
-import           Control.Monad.Logger
 import           Data.Map.Strict                ( Map )
 import           Data.List.NonEmpty             ( NonEmpty (..) )
 import           Data.Text                      ( Text )
 import           Data.Versions
-import           Haskus.Utils.Variant.Excepts
 import           Text.PrettyPrint.HughesPJClass (Pretty, pPrint, text)
 import           URI.ByteString
 #if defined(BRICK)
 import           Graphics.Vty                   ( Key(..) )
 #endif
 
-import qualified Control.Monad.Trans.Class     as Trans
 import qualified Data.Text                     as T
 import qualified GHC.Generics                  as GHC
 
@@ -152,7 +148,7 @@ data Tag = Latest
          | Recommended
          | Prerelease
          | Base PVP
-         | Old                -- ^ old version are hidden by default in TUI
+         | Old                -- ^ old versions are hidden by default in TUI
          | UnknownTag String  -- ^ used for upwardscompat
          deriving (Ord, Eq, GHC.Generic, Show) -- FIXME: manual JSON instance
 
@@ -241,7 +237,7 @@ instance NFData LinuxDistro
 distroToString :: LinuxDistro -> String
 distroToString Debian = "debian"
 distroToString Ubuntu = "ubuntu"
-distroToString Mint= "mint"
+distroToString Mint = "mint"
 distroToString Fedora = "fedora"
 distroToString CentOS = "centos"
 distroToString RedHat = "redhat"
@@ -396,6 +392,7 @@ data AppState = AppState
   , keyBindings :: KeyBindings
   , ghcupInfo :: GHCupInfo
   , pfreq :: PlatformRequest
+  , loggerConfig :: LoggerConfig
   } deriving (Show, GHC.Generic)
 
 instance NFData AppState
@@ -404,6 +401,7 @@ data LeanAppState = LeanAppState
   { settings :: Settings
   , dirs :: Dirs
   , keyBindings :: KeyBindings
+  , loggerConfig :: LoggerConfig
   } deriving (Show, GHC.Generic)
 
 instance NFData LeanAppState
@@ -555,14 +553,25 @@ instance Pretty Versioning where
 instance Pretty Version where
   pPrint = text . T.unpack . prettyVer
 
+instance Show (a -> b) where
+  show _ = "<function>"
 
-instance (Monad m, Alternative m) => Alternative (LoggingT m) where
-    empty   = Trans.lift empty
-    {-# INLINE empty #-}
-    m <|> n = LoggingT $ \ r -> runLoggingT m r <|> runLoggingT n r
-    {-# INLINE (<|>) #-}
+instance Show (IO ()) where
+  show _ = "<io>"
 
 
-instance MonadLogger m => MonadLogger (Excepts e m) where
-  monadLoggerLog a b c d = Trans.lift $ monadLoggerLog a b c d
+data LogLevel = Warn
+              | Info
+              | Debug
+              | Error
+  deriving (Eq, Ord, Show)
 
+data LoggerConfig = LoggerConfig
+  { lcPrintDebug :: Bool                  -- ^ whether to print debug in colorOutter
+  , colorOutter  :: T.Text -> IO () -- ^ how to write the color output
+  , rawOutter    :: T.Text -> IO () -- ^ how to write the full raw output
+  }
+  deriving Show
+
+instance NFData LoggerConfig where
+  rnf (LoggerConfig !lcPrintDebug !_ !_) = rnf lcPrintDebug

lib/GHCup/Types/JSON.hs

@@ -42,7 +42,7 @@ import qualified Text.Megaparsec               as MP
 import qualified Text.Megaparsec.Char          as MPC
 
 
-deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } { fieldLabelModifier = removeLensFieldLabel } ''Architecture
+deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''Architecture
 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''LinuxDistro
 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''VSep
 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''VUnit

lib/GHCup/Types/Optics.hs

@@ -6,6 +6,7 @@
 {-# LANGUAGE FlexibleContexts      #-}
 {-# LANGUAGE AllowAmbiguousTypes   #-}
 {-# LANGUAGE MultiParamTypeClasses   #-}
+{-# LANGUAGE OverloadedStrings   #-}
 
 {-|
 Module      : GHCup.Types.Optics
@@ -21,9 +22,13 @@ module GHCup.Types.Optics where
 import           GHCup.Types
 
 import           Control.Monad.Reader
-import           Data.ByteString                ( ByteString )
+import           Data.ByteString         ( ByteString )
+import           Data.Text               ( Text )
 import           Optics
 import           URI.ByteString
+import           System.Console.Pretty
+
+import qualified Data.Text                     as T
 
 makePrisms ''Tool
 makePrisms ''Architecture
@@ -87,13 +92,15 @@ getLeanAppState :: ( MonadReader env m
                    , LabelOptic' "settings"    A_Lens env Settings
                    , LabelOptic' "dirs"        A_Lens env Dirs
                    , LabelOptic' "keyBindings" A_Lens env KeyBindings
+                   , LabelOptic' "loggerConfig" A_Lens env LoggerConfig
                    )
                 => m LeanAppState
 getLeanAppState = do
   s <- gets @"settings"
   d <- gets @"dirs"
   k <- gets @"keyBindings"
-  pure (LeanAppState s d k)
+  l <- gets @"loggerConfig"
+  pure (LeanAppState s d k l)
 
 
 getSettings :: ( MonadReader env m
@@ -110,6 +117,87 @@ getDirs :: ( MonadReader env m
 getDirs = gets @"dirs"
 
 
+logInfo :: ( MonadReader env m
+           , LabelOptic' "loggerConfig" A_Lens env LoggerConfig
+           , MonadIO m
+           )
+        => Text
+        -> m ()
+logInfo = logInternal Info
+
+logWarn :: ( MonadReader env m
+           , LabelOptic' "loggerConfig" A_Lens env LoggerConfig
+           , MonadIO m
+           )
+        => Text
+        -> m ()
+logWarn = logInternal Warn
+
+logDebug :: ( MonadReader env m
+            , LabelOptic' "loggerConfig" A_Lens env LoggerConfig
+            , MonadIO m
+            )
+         => Text
+         -> m ()
+logDebug = logInternal Debug
+
+logError :: ( MonadReader env m
+            , LabelOptic' "loggerConfig" A_Lens env LoggerConfig
+            , MonadIO m
+            )
+         => Text
+         -> m ()
+logError = logInternal Error
+
+
+logInternal :: ( MonadReader env m
+               , LabelOptic' "loggerConfig" A_Lens env LoggerConfig
+               , MonadIO m
+               ) => LogLevel
+                 -> Text
+                 -> m ()
+logInternal logLevel msg = do
+  LoggerConfig {..} <- gets @"loggerConfig"
+  let style' = case logLevel of
+        Debug   -> style Bold . color Blue
+        Info    -> style Bold . color Green
+        Warn    -> style Bold . color Yellow
+        Error   -> style Bold . color Red
+  let l = case logLevel of
+        Debug   -> style' "[ Debug ]"
+        Info    -> style' "[ Info  ]"
+        Warn    -> style' "[ Warn  ]"
+        Error   -> style' "[ Error ]"
+  let strs = T.split (== '\n') msg
+  let out = case strs of
+              [] -> T.empty
+              (x:xs) -> 
+                  foldr (\a b -> a <> "\n" <> b) mempty
+                . ((l <> " " <> x) :)
+                . fmap (\line' -> style' "[ ...   ] " <> line' )
+                $ xs
+
+  when (lcPrintDebug || (not lcPrintDebug && (logLevel /= Debug)))
+    $ liftIO $ colorOutter out
+
+  -- raw output
+  let lr = case logLevel of
+        Debug   -> "Debug:"
+        Info    -> "Info:"
+        Warn    -> "Warn:"
+        Error   -> "Error:"
+  let outr = lr <> " " <> msg <> "\n"
+  liftIO $ rawOutter outr
+
+
+
+getLogCleanup :: ( MonadReader env m
+                 , LabelOptic' "logCleanup" A_Lens env (IO ())
+                 )
+              => m (IO ())
+getLogCleanup = gets @"logCleanup"
+
+
 getKeyBindings :: ( MonadReader env m
                   , LabelOptic' "keyBindings" A_Lens env KeyBindings
                   )
@@ -136,6 +224,7 @@ type HasDirs env = (LabelOptic' "dirs" A_Lens env Dirs)
 type HasKeyBindings env = (LabelOptic' "keyBindings" A_Lens env KeyBindings)
 type HasGHCupInfo env = (LabelOptic' "ghcupInfo" A_Lens env GHCupInfo)
 type HasPlatformReq env = (LabelOptic' "pfreq" A_Lens env PlatformRequest)
+type HasLog env = (LabelOptic' "loggerConfig" A_Lens env LoggerConfig)
 
 
 getCache :: (MonadReader env m, HasSettings env) => m Bool

lib/GHCup/Utils.hs

@@ -40,14 +40,12 @@ import           GHCup.Utils.Prelude
 import           GHCup.Utils.String.QQ
 
 import           Codec.Archive           hiding ( Directory )
-import           Codec.Archive.Zip
 import           Control.Applicative
 import           Control.Exception.Safe
 import           Control.Monad
 #if !MIN_VERSION_base(4,13,0)
 import           Control.Monad.Fail             ( MonadFail )
 #endif
-import           Control.Monad.Logger
 import           Control.Monad.Reader
 import           Control.Monad.Trans.Resource
                                          hiding ( throwM )
@@ -59,7 +57,6 @@ import           Data.ByteString                ( ByteString )
 import           Data.Either
 import           Data.Foldable
 import           Data.List
-import           Data.List.Extra
 import           Data.List.NonEmpty             ( NonEmpty( (:|) ))
 import           Data.Maybe
 import           Data.Text                      ( Text )
@@ -115,7 +112,7 @@ ghcLinkDestination tool ver = do
 rmMinorSymlinks :: ( MonadReader env m
                    , HasDirs env
                    , MonadIO m
-                   , MonadLogger m
+                   , HasLog env
                    , MonadThrow m
                    , MonadFail m
                    , MonadMask m
@@ -129,14 +126,14 @@ rmMinorSymlinks tv@GHCTargetVersion{..} = do
   forM_ files $ \f -> do
     let f_xyz = f <> "-" <> T.unpack (prettyVer _tvVersion) <> exeExt
     let fullF = binDir </> f_xyz
-    lift $ $(logDebug) ("rm -f " <> T.pack fullF)
+    lift $ logDebug ("rm -f " <> T.pack fullF)
     lift $ hideError doesNotExistErrorType $ rmLink fullF
 
 
 -- | Removes the set ghc version for the given target, if any.
 rmPlain :: ( MonadReader env m
            , HasDirs env
-           , MonadLogger m
+           , HasLog env
            , MonadThrow m
            , MonadFail m
            , MonadIO m
@@ -151,11 +148,11 @@ rmPlain target = do
     files <- liftE $ ghcToolFiles tv
     forM_ files $ \f -> do
       let fullF = binDir </> f <> exeExt
-      lift $ $(logDebug) ("rm -f " <> T.pack fullF)
+      lift $ logDebug ("rm -f " <> T.pack fullF)
       lift $ hideError doesNotExistErrorType $ rmLink fullF
     -- old ghcup
     let hdc_file = binDir </> "haddock-ghc" <> exeExt
-    lift $ $(logDebug) ("rm -f " <> T.pack hdc_file)
+    lift $ logDebug ("rm -f " <> T.pack hdc_file)
     lift $ hideError doesNotExistErrorType $ rmLink hdc_file
 
 
@@ -163,7 +160,7 @@ rmPlain target = do
 rmMajorSymlinks :: ( MonadReader env m
                    , HasDirs env
                    , MonadIO m
-                   , MonadLogger m
+                   , HasLog env
                    , MonadThrow m
                    , MonadFail m
                    , MonadMask m
@@ -179,7 +176,7 @@ rmMajorSymlinks tv@GHCTargetVersion{..} = do
   forM_ files $ \f -> do
     let f_xy = f <> "-" <> T.unpack v' <> exeExt
     let fullF = binDir </> f_xy
-    lift $ $(logDebug) "rm -f #{fullF}"
+    lift $ logDebug "rm -f #{fullF}"
     lift $ hideError doesNotExistErrorType $ rmLink fullF
 
 
@@ -251,9 +248,9 @@ getInstalledGHCs = do
 
 
 -- | Get all installed cabals, by matching on @~\/.ghcup\/bin/cabal-*@.
-getInstalledCabals :: ( MonadLogger m
-                      , MonadReader env m
+getInstalledCabals :: ( MonadReader env m
                       , HasDirs env
+                      , HasLog env
                       , MonadIO m
                       , MonadCatch m
                       )
@@ -271,14 +268,14 @@ getInstalledCabals = do
 
 
 -- | Whether the given cabal version is installed.
-cabalInstalled :: (MonadLogger m, MonadIO m, MonadReader env m, HasDirs env, MonadCatch m) => Version -> m Bool
+cabalInstalled :: (HasLog env, MonadIO m, MonadReader env m, HasDirs env, MonadCatch m) => Version -> m Bool
 cabalInstalled ver = do
   vers <- fmap rights getInstalledCabals
   pure $ elem ver vers
 
 
 -- Return the currently set cabal version, if any.
-cabalSet :: (MonadLogger m, MonadReader env m, HasDirs env, MonadIO m, MonadThrow m, MonadCatch m) => m (Maybe Version)
+cabalSet :: (HasLog env, MonadReader env m, HasDirs env, MonadIO m, MonadThrow m, MonadCatch m) => m (Maybe Version)
 cabalSet = do
   Dirs {..}  <- getDirs
   let cabalbin = binDir </> "cabal" <> exeExt
@@ -295,7 +292,7 @@ cabalSet = do
         case linkVersion =<< link of
           Right v -> pure $ Just v
           Left err -> do
-            $(logWarn) $ "Failed to parse cabal symlink target with: "
+            logWarn $ "Failed to parse cabal symlink target with: "
               <> T.pack (displayException err)
               <> ". The symlink "
               <> T.pack cabalbin
@@ -366,7 +363,7 @@ getInstalledStacks = do
 
 -- Return the currently set stack version, if any.
 -- TODO: there's a lot of code duplication here :>
-stackSet :: (MonadReader env m, HasDirs env, MonadIO m, MonadThrow m, MonadCatch m, MonadLogger m) => m (Maybe Version)
+stackSet :: (MonadReader env m, HasDirs env, MonadIO m, MonadThrow m, MonadCatch m, HasLog env) => m (Maybe Version)
 stackSet = do
   Dirs {..}  <- getDirs
   let stackBin = binDir </> "stack" <> exeExt
@@ -383,7 +380,7 @@ stackSet = do
         case linkVersion =<< link of
           Right v -> pure $ Just v
           Left err -> do
-            $(logWarn) $ "Failed to parse stack symlink target with: "
+            logWarn $ "Failed to parse stack symlink target with: "
               <> T.pack (displayException err)
               <> ". The symlink "
               <> T.pack stackBin
@@ -601,7 +598,7 @@ getLatestGHCFor major' minor' dls =
 
 
 -- | Unpack an archive to a temporary directory and return that path.
-unpackToDir :: (MonadLogger m, MonadIO m, MonadThrow m)
+unpackToDir :: (MonadReader env m, HasLog env, MonadIO m, MonadThrow m)
             => FilePath       -- ^ destination dir
             -> FilePath       -- ^ archive path
             -> Excepts '[UnknownArchive
@@ -609,7 +606,7 @@ unpackToDir :: (MonadLogger m, MonadIO m, MonadThrow m)
                         ] m ()
 unpackToDir dfp av = do
   let fn = takeFileName av
-  lift $ $(logInfo) $ "Unpacking: " <> T.pack fn <> " to " <> T.pack dfp
+  lift $ logInfo $ "Unpacking: " <> T.pack fn <> " to " <> T.pack dfp
 
   let untar :: MonadIO m => BL.ByteString -> Excepts '[ArchiveResult] m ()
       untar = lEM . liftIO . runArchiveM . unpackToDirLazy dfp
@@ -628,12 +625,11 @@ unpackToDir dfp av = do
     | ".tar.bz2" `isSuffixOf` fn ->
       liftE (untar . BZip.decompress =<< rf av)
     | ".tar" `isSuffixOf` fn -> liftE (untar =<< rf av)
-    | ".zip" `isSuffixOf` fn ->
-      withArchive av (unpackInto dfp)
+    | ".zip" `isSuffixOf` fn -> liftE (untar =<< rf av)
     | otherwise -> throwE $ UnknownArchive fn
 
 
-getArchiveFiles :: (MonadLogger m, MonadIO m, MonadThrow m)
+getArchiveFiles :: (MonadReader env m, HasLog env, MonadIO m, MonadThrow m)
                 => FilePath       -- ^ archive path
                 -> Excepts '[UnknownArchive
                             , ArchiveResult
@@ -658,14 +654,11 @@ getArchiveFiles av = do
     | ".tar.bz2" `isSuffixOf` fn ->
       liftE (entries . BZip.decompress =<< rf av)
     | ".tar" `isSuffixOf` fn -> liftE (entries =<< rf av)
-    | ".zip" `isSuffixOf` fn ->
-      withArchive av $ do
-        entries' <- getEntries
-        pure $ fmap unEntrySelector $ Map.keys entries'
+    | ".zip" `isSuffixOf` fn -> liftE (entries =<< rf av)
     | otherwise -> throwE $ UnknownArchive fn
 
 
-intoSubdir :: (MonadLogger m, MonadIO m, MonadThrow m, MonadCatch m)
+intoSubdir :: (MonadReader env m, HasLog env, MonadIO m, MonadThrow m, MonadCatch m)
            => FilePath       -- ^ unpacked tar dir
            -> TarDir         -- ^ how to descend
            -> Excepts '[TarDirDoesNotExist] m FilePath
@@ -793,14 +786,14 @@ makeOut args workdir = do
 
 -- | Try to apply patches in order. Fails with 'PatchFailed'
 -- on first failure.
-applyPatches :: (MonadReader env m, HasDirs env, MonadLogger m, MonadIO m)
+applyPatches :: (MonadReader env m, HasDirs env, HasLog env, MonadIO m)
              => FilePath   -- ^ dir containing patches
              -> FilePath   -- ^ dir to apply patches in
              -> Excepts '[PatchFailed] m ()
 applyPatches pdir ddir = do
   patches <- (fmap . fmap) (pdir </>) $ liftIO $ listDirectory pdir
   forM_ (sort patches) $ \patch' -> do
-    lift $ $(logInfo) $ "Applying patch " <> T.pack patch'
+    lift $ logInfo $ "Applying patch " <> T.pack patch'
     fmap (either (const Nothing) Just)
          (exec
            "patch"
@@ -841,7 +834,7 @@ runBuildAction :: ( Pretty (V e)
                   , HasSettings env
                   , MonadIO m
                   , MonadMask m
-                  , MonadLogger m
+                  , HasLog env
                   , MonadUnliftIO m
                   )
                => FilePath        -- ^ build directory (cleaned up depending on Settings)
@@ -869,9 +862,9 @@ runBuildAction bdir instdir action = do
 
 -- | Remove a build directory, ignoring if it doesn't exist and gracefully
 -- printing other errors without crashing.
-rmBDir :: (MonadLogger m, MonadUnliftIO m, MonadIO m) => FilePath -> m ()
+rmBDir :: (MonadReader env m, HasLog env, MonadUnliftIO m, MonadIO m) => FilePath -> m ()
 rmBDir dir = withRunInIO (\run -> run $
-           liftIO $ handleIO (\e -> run $ $(logWarn) $
+           liftIO $ handleIO (\e -> run $ logWarn $
                "Couldn't remove build dir " <> T.pack dir <> ", error was: " <> T.pack (displayException e))
            $ hideError doesNotExistErrorType
            $ rmPathForcibly dir)
@@ -984,7 +977,7 @@ rmLink = hideError doesNotExistErrorType . recycleFile
 -- On windows, this requires that 'ensureGlobalTools' was run beforehand.
 createLink :: ( MonadMask m
               , MonadThrow m
-              , MonadLogger m
+              , HasLog env
               , MonadIO m
               , MonadReader env m
               , HasDirs env
@@ -1006,24 +999,24 @@ createLink link exe = do
       fullLink = takeDirectory exe </> link
       shimContents = "path = " <> fullLink
 
-  $(logDebug) $ "rm -f " <> T.pack exe
+  logDebug $ "rm -f " <> T.pack exe
   rmLink exe
 
-  $(logDebug) $ "ln -s " <> T.pack fullLink <> " " <> T.pack exe
+  logDebug $ "ln -s " <> T.pack fullLink <> " " <> T.pack exe
   liftIO $ copyFile shimGen exe
   liftIO $ writeFile shim shimContents
 #else
-  $(logDebug) $ "rm -f " <> T.pack exe
+  logDebug $ "rm -f " <> T.pack exe
   hideError doesNotExistErrorType $ recycleFile exe
 
-  $(logDebug) $ "ln -s " <> T.pack link <> " " <> T.pack exe
+  logDebug $ "ln -s " <> T.pack link <> " " <> T.pack exe
   liftIO $ createFileLink link exe
 #endif
 
 
 ensureGlobalTools :: ( MonadMask m
                      , MonadThrow m
-                     , MonadLogger m
+                     , HasLog env
                      , MonadIO m
                      , MonadReader env m
                      , HasDirs env
@@ -1041,8 +1034,8 @@ ensureGlobalTools = do
     $ maybe (Left NoDownload) Right $ Map.lookup ShimGen gTools
   let dl = downloadCached' shimDownload (Just "gs.exe") Nothing
   void $ (\(DigestError _ _) -> do
-      lift $ $(logWarn) "Digest doesn't match, redownloading gs.exe..."
-      lift $ $(logDebug) "rm -f #{shimDownload}"
+      lift $ logWarn "Digest doesn't match, redownloading gs.exe..."
+      lift $ logDebug "rm -f #{shimDownload}"
       lift $ hideError doesNotExistErrorType $ recycleFile (cacheDir dirs </> "gs.exe")
       liftE @'[DigestError , DownloadFailed] $ dl
     ) `catchE` (liftE @'[DigestError , DownloadFailed] dl)

lib/GHCup/Utils/Dirs.hs

@@ -2,9 +2,7 @@
 {-# LANGUAGE DataKinds             #-}
 {-# LANGUAGE OverloadedStrings     #-}
 {-# LANGUAGE FlexibleContexts      #-}
-{-# LANGUAGE QuasiQuotes           #-}
 {-# LANGUAGE ViewPatterns          #-}
-{-# LANGUAGE TemplateHaskell       #-}
 
 {-|
 Module      : GHCup.Utils.Dirs
@@ -45,7 +43,6 @@ import           GHCup.Utils.Prelude
 import           Control.Exception.Safe
 import           Control.Monad
 import           Control.Monad.IO.Unlift
-import           Control.Monad.Logger
 import           Control.Monad.Reader
 import           Control.Monad.Trans.Resource hiding (throwM)
 import           Data.Bifunctor
@@ -61,7 +58,7 @@ import           System.IO.Temp
 
 import qualified Data.ByteString               as BS
 import qualified Data.Text                     as T
-import qualified Data.Yaml                     as Y
+import qualified Data.YAML.Aeson               as Y
 import qualified Text.Megaparsec               as MP
 import Control.Concurrent (threadDelay)
 
@@ -224,7 +221,7 @@ ghcupConfigFile = do
   contents <- liftIO $ handleIO' NoSuchThing (\_ -> pure Nothing) $ Just <$> BS.readFile filepath
   case contents of
       Nothing -> pure defaultUserSettings
-      Just contents' -> lE' JSONDecodeError . first show . Y.decodeEither' $ contents'
+      Just contents' -> lE' JSONDecodeError . first snd . Y.decode1Strict $ contents'
 
 
     -------------------------
@@ -261,7 +258,7 @@ parseGHCupGHCDir (T.pack -> fp) =
 mkGhcupTmpDir :: ( MonadReader env m
                  , HasDirs env
                  , MonadUnliftIO m
-                 , MonadLogger m
+                 , HasLog env
                  , MonadCatch m
                  , MonadThrow m
                  , MonadMask m
@@ -273,14 +270,14 @@ mkGhcupTmpDir = do
   let minSpace = 5000 -- a rough guess, aight?
   space <- handleIO (\_ -> pure Nothing) $ fmap Just $ liftIO $ getAvailSpace tmpdir
   when (maybe False (toBytes minSpace >) space) $ do
-    $(logWarn) ("Possibly insufficient disk space on "
+    logWarn ("Possibly insufficient disk space on "
       <> T.pack tmpdir
       <> ". At least "
       <> T.pack (show minSpace)
       <> " MB are recommended, but only "
       <> toMB (fromJust space)
       <> " are free. Consider freeing up disk space or setting TMPDIR env variable.")
-    $(logWarn)
+    logWarn
       "...waiting for 10 seconds before continuing anyway, you can still abort..."
     liftIO $ threadDelay 10000000 -- give the user a sec to intervene
 
@@ -295,8 +292,9 @@ mkGhcupTmpDir = do
 
 withGHCupTmpDir :: ( MonadReader env m
                    , HasDirs env
+                   , HasLog env
+                   , HasSettings env
                    , MonadUnliftIO m
-                   , MonadLogger m
                    , MonadCatch m
                    , MonadResource m
                    , MonadThrow m
@@ -309,7 +307,7 @@ withGHCupTmpDir = snd <$> withRunInIO (\run ->
         (run mkGhcupTmpDir)
         (\fp ->
             handleIO (\e -> run
-                $ $(logDebug) ("Resource cleanup failed for " <> T.pack fp <> ", error was: " <> T.pack (displayException e)))
+                $ logDebug ("Resource cleanup failed for " <> T.pack fp <> ", error was: " <> T.pack (displayException e)))
             . rmPathForcibly
             $ fp))
 
@@ -341,9 +339,10 @@ relativeSymlink p1 p2 =
 
 cleanupTrash :: ( MonadIO m
                 , MonadMask m
-                , MonadLogger m
                 , MonadReader env m
+                , HasLog env
                 , HasDirs env
+                , HasSettings env
                 )
              => m ()
 cleanupTrash = do
@@ -352,8 +351,8 @@ cleanupTrash = do
   if null contents
   then pure ()
   else do
-    $(logWarn) ("Removing leftover files in " <> T.pack recycleDir)
+    logWarn ("Removing leftover files in " <> T.pack recycleDir)
     forM_ contents (\fp -> handleIO (\e ->
-        $(logDebug) ("Resource cleanup failed for " <> T.pack fp <> ", error was: " <> T.pack (displayException e))
+        logDebug ("Resource cleanup failed for " <> T.pack fp <> ", error was: " <> T.pack (displayException e))
       ) $ liftIO $ removePathForcibly (recycleDir </> fp))
 

lib/GHCup/Utils/File/Common.hs

@@ -7,7 +7,6 @@ module GHCup.Utils.File.Common where
 
 import           GHCup.Utils.Prelude
 
-import           Control.Monad.Extra
 import           Control.Monad.Reader
 import           Data.Maybe
 import           GHC.IO.Exception
@@ -102,3 +101,6 @@ findFiles path regex = do
   contents <- listDirectory path
   pure $ filter (match regex) contents
 
+
+checkFileAlreadyExists :: (MonadIO m) => FilePath -> m Bool
+checkFileAlreadyExists fp = liftIO $ doesFileExist fp

lib/GHCup/Utils/File/Posix.hs

@@ -1,8 +1,5 @@
-{-# LANGUAGE QuasiQuotes       #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE ViewPatterns      #-}
 
 {-|
 Module      : GHCup.Utils.File.Posix
@@ -28,7 +25,6 @@ import           Control.Concurrent.Async
 import           Control.Exception              ( evaluate )
 import           Control.Exception.Safe
 import           Control.Monad
-import           Control.Monad.Logger
 import           Control.Monad.Reader
 import           Control.Monad.Trans.State.Strict
 import           Data.ByteString                ( ByteString )
@@ -131,7 +127,7 @@ execLogged exe args chdir lfile env = do
       pure e
 
   tee :: Fd -> Fd -> IO ()
-  tee fileFd fdIn = readTilEOF lineAction fdIn
+  tee fileFd = readTilEOF lineAction
 
    where
     lineAction :: ByteString -> IO ()
@@ -350,7 +346,7 @@ toProcessError exe args mps = case mps of
 
 
 
-chmod_755 :: (MonadLogger m, MonadIO m) => FilePath -> m ()
+chmod_755 :: (MonadReader env m, HasLog env, MonadIO m) => FilePath -> m ()
 chmod_755 fp = do
   let exe_mode =
           nullFileMode
@@ -361,7 +357,7 @@ chmod_755 fp = do
             `unionFileModes` groupReadMode
             `unionFileModes` otherExecuteMode
             `unionFileModes` otherReadMode
-  $(logDebug) ("chmod 755 " <> T.pack fp)
+  logDebug ("chmod 755 " <> T.pack fp)
   liftIO $ setFileMode fp exe_mode
 
 

lib/GHCup/Utils/Logger.hs

@@ -22,11 +22,8 @@ import           GHCup.Utils.String.QQ
 import           Control.Exception.Safe
 import           Control.Monad
 import           Control.Monad.IO.Class
-import           Control.Monad.Logger
 import           Control.Monad.Reader
-import           Data.Char               ( ord )
 import           Prelude                 hiding ( appendFile )
-import           System.Console.Pretty
 import           System.FilePath
 import           System.IO.Error
 import           Text.Regex.Posix
@@ -35,53 +32,6 @@ import qualified Data.ByteString               as B
 import GHCup.Utils.Prelude
 
 
-data LoggerConfig = LoggerConfig
-  { lcPrintDebug :: Bool                  -- ^ whether to print debug in colorOutter
-  , colorOutter  :: B.ByteString -> IO () -- ^ how to write the color output
-  , rawOutter    :: B.ByteString -> IO () -- ^ how to write the full raw output
-  }
-
-
-myLoggerT :: LoggerConfig -> LoggingT m a -> m a
-myLoggerT LoggerConfig {..} loggingt = runLoggingT loggingt mylogger
- where
-  mylogger :: Loc -> LogSource -> LogLevel -> LogStr -> IO ()
-  mylogger _ _ level str' = do
-    -- color output
-    let style' = case level of
-          LevelDebug   -> style Bold . color Blue
-          LevelInfo    -> style Bold . color Green
-          LevelWarn    -> style Bold . color Yellow
-          LevelError   -> style Bold . color Red
-          LevelOther _ -> id
-    let l = case level of
-          LevelDebug   -> toLogStr (style' "[ Debug ]")
-          LevelInfo    -> toLogStr (style' "[ Info  ]")
-          LevelWarn    -> toLogStr (style' "[ Warn  ]")
-          LevelError   -> toLogStr (style' "[ Error ]")
-          LevelOther t -> toLogStr "[ " <> toLogStr t <> toLogStr " ]"
-    let strs = fmap toLogStr . B.split (fromIntegral $ ord '\n') . fromLogStr $ str'
-    let out = case strs of
-                [] -> B.empty
-                (x:xs) -> fromLogStr
-                  . foldr (\a b -> a <> toLogStr "\n" <> b) mempty
-                  . ((l <> toLogStr " " <> x) :)
-                  . fmap (\line' -> toLogStr (style' "[ ...   ] ") <> line' )
-                  $ xs
-
-    when (lcPrintDebug || (not lcPrintDebug && (level /= LevelDebug)))
-      $ colorOutter out
-
-    -- raw output
-    let lr = case level of
-          LevelDebug   -> toLogStr "Debug:"
-          LevelInfo    -> toLogStr "Info:"
-          LevelWarn    -> toLogStr "Warn:"
-          LevelError   -> toLogStr "Error:"
-          LevelOther t -> toLogStr t <> toLogStr ":"
-    let outr = fromLogStr (lr <> toLogStr " " <> str' <> toLogStr "\n")
-    rawOutter outr
-
 
 initGHCupFileLogging :: ( MonadReader env m
                         , HasDirs env

lib/GHCup/Utils/Prelude.hs

@@ -5,7 +5,6 @@
 {-# LANGUAGE ScopedTypeVariables #-}
 {-# LANGUAGE TypeFamilies        #-}
 {-# LANGUAGE TypeOperators       #-}
-{-# LANGUAGE TemplateHaskell     #-}
 
 {-|
 Module      : GHCup.Utils.Prelude
@@ -30,10 +29,10 @@ import           Control.Exception.Safe
 import           Control.Monad
 import           Control.Monad.IO.Class
 import           Control.Monad.Reader
-import           Control.Monad.Logger
 import           Data.Bifunctor
 import           Data.ByteString                ( ByteString )
-import           Data.List                      ( nub, intercalate )
+import           Data.List                      ( nub, intercalate, stripPrefix, isPrefixOf )
+import           Data.Maybe
 import           Data.Foldable
 import           Data.String
 import           Data.Text                      ( Text )
@@ -75,8 +74,9 @@ import qualified System.Win32.File             as Win32
 -- >>> import Data.ByteString.Internal (c2w, w2c)
 -- >>> import Test.QuickCheck
 -- >>> import Data.Word8
--- >>> import Data.Word8
 -- >>> import qualified Data.Text as T
+-- >>> import qualified Data.Char as C
+-- >>> import Data.List
 -- >>> instance Arbitrary T.Text where arbitrary = T.pack <$> arbitrary
 
 
@@ -174,8 +174,12 @@ lEM' :: forall e' e es a m
 lEM' f em = lift em >>= lE . first f
 
 -- for some obscure reason... this won't type-check if we move it to a different module
-catchWarn :: forall es m . (Pretty (V es), MonadLogger m, Monad m) => Excepts es m () -> Excepts '[] m ()
-catchWarn = catchAllE @_ @es (\v -> lift $ $(logWarn) (T.pack . prettyShow $ v))
+catchWarn :: forall es m env . ( Pretty (V es)
+                             , MonadReader env m
+                             , HasLog env
+                             , MonadIO m
+                             , Monad m) => Excepts es m () -> Excepts '[] m ()
+catchWarn = catchAllE @_ @es (\v -> lift $ logWarn (T.pack . prettyShow $ v))
 
 fromEither :: Either a b -> VEither '[a] b
 fromEither = either (VLeft . V) VRight
@@ -520,7 +524,7 @@ forFold :: (Foldable t, Applicative m, Monoid b) => t a -> (a -> m b) -> m b
 forFold = \t -> (`traverseFold` t)
 
 
--- | Strip @\\r@ and @\\n@ from 'ByteString's
+-- | Strip @\\r@ and @\\n@ from 'String's
 --
 -- >>> stripNewline "foo\n\n\n"
 -- "foo"
@@ -532,13 +536,10 @@ forFold = \t -> (`traverseFold` t)
 -- prop> \t -> stripNewline (t <> "\n") === stripNewline t
 -- prop> \t -> not (any (isNewLine . c2w) t) ==> stripNewline t == t
 stripNewline :: String -> String
-stripNewline s
-  | null s               = []
-  | head s `elem` "\n\r" = stripNewline (tail s)
-  | otherwise            = head s : stripNewline (tail s)
+stripNewline = filter (`notElem` "\n\r")
 
 
--- | Strip @\\r@ and @\\n@ from 'ByteString's
+-- | Strip @\\r@ and @\\n@ from 'Text's
 --
 -- >>> stripNewline' "foo\n\n\n"
 -- "foo"
@@ -550,10 +551,7 @@ stripNewline s
 -- prop> \t -> stripNewline' (t <> "\n") === stripNewline' t
 -- prop> \t -> not (T.any (isNewLine . c2w) t) ==> stripNewline' t == t
 stripNewline' :: T.Text -> T.Text
-stripNewline' s
-  | T.null s               = mempty
-  | T.head s `elem` "\n\r" = stripNewline' (T.tail s)
-  | otherwise              = T.singleton (T.head s) <> stripNewline' (T.tail s)
+stripNewline' = T.filter (`notElem` "\n\r")
 
 
 -- | Is the word8 a newline?
@@ -587,3 +585,117 @@ splitOnPVP c s = case Split.splitOn c s of
     | otherwise -> def
  where
   def = (s, "")
+
+
+
+-- | Like 'find', but where the test can be monadic.
+--
+-- >>> findM (Just . C.isUpper) "teST"
+-- Just (Just 'S')
+-- >>> findM (Just . C.isUpper) "test"
+-- Just Nothing
+-- >>> findM (Just . const True) ["x",undefined]
+-- Just (Just "x")
+findM :: Monad m => (a -> m Bool) -> [a] -> m (Maybe a)
+findM ~p = foldr (\x -> ifM (p x) (pure $ Just x)) (pure Nothing)
+
+
+-- | Drops the given suffix from a list.
+--   It returns the original sequence if the sequence doesn't end with the given suffix.
+--
+-- >>> dropSuffix "!" "Hello World!"
+-- "Hello World"
+-- >>> dropSuffix "!" "Hello World!!"
+-- "Hello World!"
+-- >>> dropSuffix "!" "Hello World."
+-- "Hello World."
+dropSuffix :: Eq a => [a] -> [a] -> [a]
+dropSuffix a b = fromMaybe b $ stripSuffix a b
+
+-- | Return the prefix of the second list if its suffix
+--   matches the entire first list.
+--
+-- >>> stripSuffix "bar" "foobar"
+-- Just "foo"
+-- >>> stripSuffix ""    "baz"
+-- Just "baz"
+-- >>> stripSuffix "foo" "quux"
+-- Nothing
+stripSuffix :: Eq a => [a] -> [a] -> Maybe [a]
+stripSuffix a b = reverse <$> stripPrefix (reverse a) (reverse b)
+
+
+-- | Drops the given prefix from a list.
+--   It returns the original sequence if the sequence doesn't start with the given prefix.
+--
+-- >>> dropPrefix "Mr. " "Mr. Men"
+-- "Men"
+-- >>> dropPrefix "Mr. " "Dr. Men"
+-- "Dr. Men"
+dropPrefix :: Eq a => [a] -> [a] -> [a]
+dropPrefix a b = fromMaybe b $ stripPrefix a b
+
+
+
+-- | Break a list into pieces separated by the first
+-- list argument, consuming the delimiter. An empty delimiter is
+-- invalid, and will cause an error to be raised.
+--
+-- >>> splitOn "\r\n" "a\r\nb\r\nd\r\ne"
+-- ["a","b","d","e"]
+-- >>> splitOn "aaa"  "aaaXaaaXaaaXaaa"
+-- ["","X","X","X",""]
+-- >>> splitOn "x"    "x"
+-- ["",""]
+-- >>> splitOn "x"    ""
+-- [""]
+--
+-- prop> \s x -> s /= "" ==> intercalate s (splitOn s x) == x
+-- prop> \c x -> splitOn [c] x                           == split (==c) x
+splitOn :: Eq a => [a] -> [a] -> [[a]]
+splitOn [] _ = error "splitOn, needle may not be empty"
+splitOn _ [] = [[]]
+splitOn needle haystack = a : if null b then [] else splitOn needle $ drop (length needle) b
+    where (a,b) = breakOn needle haystack
+
+
+-- | Splits a list into components delimited by separators,
+-- where the predicate returns True for a separator element.  The
+-- resulting components do not contain the separators.  Two adjacent
+-- separators result in an empty component in the output.
+--
+-- >>> split (== 'a') "aabbaca"
+-- ["","","bb","c",""]
+-- >>> split (== 'a') ""
+-- [""]
+-- >>> split (== ':') "::xyz:abc::123::"
+-- ["","","xyz","abc","","123","",""]
+-- >>> split (== ',') "my,list,here"
+-- ["my","list","here"]
+split :: (a -> Bool) -> [a] -> [[a]]
+split _ [] = [[]]
+split f (x:xs)
+  | f x = [] : split f xs
+  | y:ys <- split f xs = (x:y) : ys
+  | otherwise = [[]]
+
+
+-- | Find the first instance of @needle@ in @haystack@.
+-- The first element of the returned tuple
+-- is the prefix of @haystack@ before @needle@ is matched.  The second
+-- is the remainder of @haystack@, starting with the match.
+-- If you want the remainder /without/ the match, use 'stripInfix'.
+--
+-- >>> breakOn "::" "a::b::c"
+-- ("a","::b::c")
+-- >>> breakOn "/" "foobar"
+-- ("foobar","")
+--
+-- prop> \needle haystack -> let (prefix,match) = breakOn needle haystack in prefix ++ match == haystack
+breakOn :: Eq a => [a] -> [a] -> ([a], [a])
+breakOn needle haystack | needle `isPrefixOf` haystack = ([], haystack)
+breakOn _ [] = ([], [])
+breakOn needle (x:xs) = first (x:) $ breakOn needle xs
+
+
+

lib/GHCup/Utils/String/QQ.hs

@@ -44,15 +44,14 @@ import           Language.Haskell.TH.Quote
 -- The pattern portion is undefined.
 s :: QuasiQuoter
 s = QuasiQuoter
-  (\s' -> case and $ fmap isAscii s' of
+  (\s' -> case all isAscii s' of
     True  -> (\a -> [|fromString a|]) . trimLeadingNewline . removeCRs $ s'
     False -> fail "Not ascii"
   )
-  (error "Cannot use q as a pattern")
-  (error "Cannot use q as a type")
-  (error "Cannot use q as a dec")
+  (error "Cannot use s as a pattern")
+  (error "Cannot use s as a type")
+  (error "Cannot use s as a dec")
  where
   removeCRs = filter (/= '\r')
   trimLeadingNewline ('\n' : xs) = xs
   trimLeadingNewline xs          = xs
-

stack.yaml

@@ -1,4 +1,4 @@
-resolver: lts-18.7
+resolver: lts-18.2
 
 packages:
   - .
@@ -6,8 +6,9 @@ packages:
 extra-deps:
   - git: https://github.com/bgamari/terminal-size
     commit: 34ea816bd63f75f800eedac12c6908c6f3736036
+
   - git: https://github.com/hasufell/libarchive
-    commit: 024a7e8ab7b4d3848dc64dca1e70a04831eedc99
+    commit: 8587aab78dd515928024ecd82c8f215e06db85cd
 
   - brick-0.64@sha256:f03fa14607c22cf48af99e24c44f79a0fb073f7ec229f15e969fed9ff73c93f6,16530
   - IfElse-0.85@sha256:6939b94acc6a55f545f63a168a349dd2fbe4b9a7cca73bf60282db5cc6aa47d2,445
@@ -41,7 +42,6 @@ extra-deps:
   - streamly-posix-0.1.0.1@sha256:5d89b806281035d34020387ed99dde1ddab282c7ed66df3b7cd010b38fd3517b,2138
   - strict-base-0.4.0.0@sha256:2ff4e43cb95eedf2995558d7fc34d19362846413dd39e6aa6a5b3ea8228fef9f,1248
   - xor-0.0.1.0@sha256:f8362b4a68562b9afbcd727ff64c1a303970df3a032e0033d2f4c094c3501df3,2243
-  - zip-1.7.1@sha256:0ce03d0fbffba47c1ab6fbb9166f8ba5373d828d78587df21b7e9d7bb150f929,3918
 
 flags:
   http-io-streams:
@@ -53,6 +53,12 @@ flags:
   regex-posix:
     _regex-posix-clib: true
 
+  aeson-pretty:
+    lib-only: true
+
+  cabal-plan:
+    exe: false
+
 ghc-options:
   "$locals": -O2
   streamly: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16

test/GHCup/ArbitraryTypes.hs

@@ -66,7 +66,7 @@ instance Arbitrary ByteString where
     ---------------------
 
 instance Arbitrary Scheme where
-  arbitrary = oneof [ pure (Scheme "http"), pure (Scheme "https") ]
+  arbitrary = elements [ Scheme "http", Scheme "https" ]
 
 instance Arbitrary Host where
   arbitrary = genericArbitrary