Lala

2020-08-27 23:39:47 +02:00
37 changed files with 756 additions and 22198 deletions
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -17,7 +17,7 @@ variables:
    BIT: "64"

 .alpine:64bit:
-  image: "alpine:3.12"
+  image: "alpine:edge"
  tags:
    - x86_64-linux
  variables:
@@ -25,7 +25,7 @@ variables:
    BIT: "64"

 .alpine:32bit:
-  image: "i386/alpine:3.12"
+  image: "i386/alpine:edge"
  tags:
    - x86_64-linux
  variables:
@@ -60,12 +60,7 @@ variables:
  script:
    - ./.gitlab/script/ghcup_version.sh
  variables:
-    JSON_VERSION: "0.0.3"
-  artifacts:
-    expire_in: 2 week
-    paths:
-      - golden
-    when: on_failure
+    JSON_VERSION: "0.0.2"

 .test_ghcup_version:linux:
  extends:
@@ -107,29 +102,6 @@ variables:
  only:
    - tags

-######## stack test ########
-
-test:linux:stack:
-  before_script:
-    - ./.gitlab/before_script/linux/install_deps_minimal.sh
-  script:
-    - ./.gitlab/script/ghcup_stack.sh
-  extends:
-    - .debian
-
-######## bootstrap test ########
-
-test:linux:bootstrap_script:
-  before_script:
-    - ./.gitlab/before_script/linux/install_deps_minimal.sh
-  script:
-    - ./.gitlab/script/ghcup_bootstrap.sh
-  variables:
-    GHC_VERSION: "8.8.4"
-    CABAL_VERSION: "3.2.0.0"
-  extends:
-    - .debian
-
 ######## linux test ########

 test:linux:recommended:
--- a/.gitlab/before_script/linux/install_deps_minimal.sh
+++ b/.gitlab/before_script/linux/install_deps_minimal.sh
@@ -1,10 +0,0 @@
-#!/bin/sh
-
-set -eux
-
-. "$( cd "$(dirname "$0")" ; pwd -P )/../../ghcup_env"
-
-mkdir -p "${TMPDIR}"
-
-sudo apt-get update -y
-sudo apt-get install -y libnuma-dev zlib1g-dev libgmp-dev libgmp10 libssl-dev liblzma-dev git wget
--- a/.gitlab/script/ghcup_bootstrap.sh
+++ b/.gitlab/script/ghcup_bootstrap.sh
@@ -1,30 +0,0 @@
-#!/bin/sh
-
-set -eux
-
-. "$( cd "$(dirname "$0")" ; pwd -P )/../ghcup_env"
-
-mkdir -p "$CI_PROJECT_DIR"/.local/bin
-
-ecabal() {
-	cabal --store-dir="$(pwd)"/.store "$@"
-}
-
-eghcup() {
-	ghcup -v -c -s file://$(pwd)/ghcup-${JSON_VERSION}.yaml "$@"
-}
-
-git describe --always
-
-### build
-
-ecabal update
-
-export BOOTSTRAP_HASKELL_NONINTERACTIVE=yes
-export BOOTSTRAP_HASKELL_GHC_VERSION=$GHC_VERSION
-export BOOTSTRAP_HASKELL_CABAL_VERSION=$CABAL_VERSION
-
-./bootstrap-haskell
-
-[ "$(ghc --numeric-version)" = "${GHC_VERSION}" ]
-
--- a/.gitlab/script/ghcup_stack.sh
+++ b/.gitlab/script/ghcup_stack.sh
@@ -1,21 +0,0 @@
-#!/bin/sh
-
-set -eux
-
-. "$( cd "$(dirname "$0")" ; pwd -P )/../ghcup_env"
-
-mkdir -p "$CI_PROJECT_DIR"/.local/bin
-
-git describe --always
-
-### build
-
-curl -L -O https://get.haskellstack.org/stable/linux-x86_64.tar.gz
-tar xf linux-x86_64.tar.gz
-cp stack-*-linux-*/stack "$CI_PROJECT_DIR"/.local/bin/stack
-chmod +x "$CI_PROJECT_DIR"/.local/bin/stack
-
-mkdir -p "$CI_PROJECT_DIR"/.stack_root
-export TAR_OPTIONS=--no-same-owner
-stack --allow-different-user --stack-root "$CI_PROJECT_DIR"/.stack_root build
-stack --allow-different-user --stack-root "$CI_PROJECT_DIR"/.stack_root test
--- a/.gitlab/script/ghcup_version.sh
+++ b/.gitlab/script/ghcup_version.sh
@@ -20,28 +20,22 @@ git describe --always

 ecabal update

-ecabal install -w ghc-${GHC_VERSION} --installdir="$CI_PROJECT_DIR"/.local/bin hspec-discover
-
 if [ "${OS}" = "DARWIN" ] ; then
 	ecabal build -w ghc-${GHC_VERSION} -ftui
-	ecabal test -w ghc-${GHC_VERSION} -ftui ghcup-test
 elif [ "${OS}" = "LINUX" ] ; then
 	if [ "${BIT}" = "32" ] ; then
 		ecabal build -w ghc-${GHC_VERSION} -finternal-downloader -ftui -ftar
-		ecabal test -w ghc-${GHC_VERSION} -finternal-downloader -ftui -ftar ghcup-test
 	else
 		ecabal build -w ghc-${GHC_VERSION} -finternal-downloader -ftui
-		ecabal test -w ghc-${GHC_VERSION} -finternal-downloader -ftui ghcup-test
 	fi
 else
 	ecabal build -w ghc-${GHC_VERSION} -finternal-downloader -ftui
-	ecabal test -w ghc-${GHC_VERSION} -finternal-downloader -ftui ghcup-test
 fi

 ecabal haddock -w ghc-${GHC_VERSION} -ftar

-cp "$(ecabal new-exec -w ghc-${GHC_VERSION} --verbose=0 --offline sh -- -c 'command -v ghcup')" .
-cp "$(ecabal new-exec -w ghc-${GHC_VERSION} --verbose=0 --offline sh -- -c 'command -v ghcup-gen')" .
+cp "$(ecabal new-exec -w ghc-${GHC_VERSION} --enable-tests --verbose=0 --offline sh -- -c 'command -v ghcup')" .
+cp "$(ecabal new-exec -w ghc-${GHC_VERSION} --enable-tests --verbose=0 --offline sh -- -c 'command -v ghcup-gen')" .

 cp ./ghcup "$CI_PROJECT_DIR"/.local/bin/ghcup
 cp ./ghcup-gen "$CI_PROJECT_DIR"/.local/bin/ghcup-gen
@@ -93,18 +87,6 @@ eghcup set ${GHC_VERSION}
 eghcup rm 8.4.4
 [ "$(ghc --numeric-version)" = "${ghc_ver}" ]

-# install hls
-if [ "${OS}" = "DARWIN" ] ; then
-	eghcup install hls
-	haskell-language-server-wrapper --version
-elif [ "${OS}" = "LINUX" ] ; then
-	if [ "${BIT}" = "64" ] ; then
-		eghcup install hls
-		haskell-language-server-wrapper --version
-	fi
-fi
-
-
 eghcup rm $(ghc --numeric-version)

 eghcup upgrade
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,24 +1,5 @@
 # Revision history for ghcup

-## 0.1.12 -- ????-??-??
-
-* improve TUI:
-  - separators between tools sections
-  - reverse list order so latest is on top
-  - expand the blues selected bar
-  - show new latest versions in bright white
-
-## 0.1.11 -- 2020-09-23
-
-* Add support for installing haskell-language-server, wrt #65
-* When compiling GHC from source create a bindist first, store that bindist in `~/.ghcup/cache` and install it, wrt #51
-* Allow to compile over existing version (`ghcup compile ghc -v 8.6.5 -b 8.6.5`) and replace it wrt #59
-* simplify installing from custom bindist wrt #60
-  - `ghcup install ghc -u <url> <version>`
-* fix bug when cabal isn't marked executable in bindist
-* fix bug when `~/.ghcup` is a valid symlink wrt #49
-* Drop support for compiling cabal from source (the old bootstrap script is discontinued)
-
 ## 0.1.10 -- 2020-08-14

 * Show stray Cabals (useful for pre-releases or compiled ones)
--- a/README.md
+++ b/README.md
@@ -9,15 +9,11 @@ Similar in scope to [rustup](https://github.com/rust-lang-nursery/rustup.rs), [p
 ## Table of Contents

   * [Installation](#installation)
-     * [Simple bootstrap](#simple-bootstrap)
-     * [Manual install](#manual-install)
-     * [Vim integration](#vim-integration)
   * [Usage](#usage)
     * [Manpages](#manpages)
     * [Shell-completion](#shell-completion)
     * [Cross support](#cross-support)
     * [XDG support](#xdg-support)
-     * [Installing custom bindists](#installing-custom-bindists)
   * [Design goals](#design-goals)
   * [How](#how)
   * [Known users](#known-users)
@@ -41,10 +37,6 @@ Then adjust your `PATH` in `~/.bashrc` (or similar, depending on your shell) lik
 export PATH="$HOME/.cabal/bin:$HOME/.ghcup/bin:$PATH"
 ```

-### Vim integration
-
-See [ghcup.vim](https://github.com/hasufell/ghcup.vim).
-
 ## Usage

 See `ghcup --help`.
@@ -115,22 +107,6 @@ Then you can control the locations via XDG environment variables as such:
 * `XDG_CACHE_HOME`: logs and download files will be stored in `ghcup` subdir
 * `XDG_BIN_HOME`: binaries end up here (default: `~/.local/bin`)

-### Installing custom bindists
-
-There are a couple of good use cases to install custom bindists:
-
-1. manually built bindists (e.g. with patches)
-  - example: `ghcup install ghc -u 'file:///home/mearwald/tmp/ghc-eff-patches/ghc-8.10.2-x86_64-deb10-linux.tar.xz' 8.10.2-eff`
-2. GHC head CI bindists
-  - example: `ghcup install ghc -u 'https://gitlab.haskell.org/api/v4/projects/1/jobs/artifacts/master/raw/ghc-x86_64-fedora27-linux.tar.xz?job=validate-x86_64-linux-fedora27' head`
-3. DWARF bindists
-  - example: `ghcup install ghc -u 'https://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-x86_64-deb10-linux-dwarf.tar.xz' 8.10.2-dwarf`
-
-Since the version parser is pretty lax, `8.10.2-eff` and `head` are both valid versions
-and produce the binaries `ghc-8.10.2-eff` and `ghc-head` respectively.
-GHCup always needs to know which version the bindist corresponds to (this is not automatically
-detected).
-
 ## Design goals

 1. simplicity
@@ -163,17 +139,6 @@ In addition this script can also install `cabal-install`.

 ## Known problems

-### Custom ghc version names
-
-When installing ghc bindists with custom version names as outlined in
-[installing custom bindists](#installing-custom-bindists), then cabal might
-be unable to find the correct `ghc-pkg` (also see [#73](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/73))
-if you use `cabal build --with-compiler=ghc-foo`. Instead, point it to the full path, such as:
-`cabal build --with-compiler=$HOME/.ghcup/ghc/<version-name>/bin/ghc` or set that GHC version
-as the current one via: `ghcup set ghc <version-name>`.
-
-This problem doesn't exist for regularly installed GHC versions.
-
 ### Limited distributions supported

 Currently only GNU/Linux distributions compatible with the [upstream GHC](https://www.haskell.org/ghc/download_ghc_8_6_1.html#binaries) binaries are supported.
--- a/app/ghcup-gen/Validate.hs
+++ b/app/ghcup-gen/Validate.hs
@@ -8,6 +8,7 @@ import           GHCup
 import           GHCup.Download
 import           GHCup.Types
 import           GHCup.Utils.Dirs
+import           GHCup.Utils.File
 import           GHCup.Utils.Logger
 import           GHCup.Utils.Version.QQ

@@ -55,7 +56,7 @@ validate :: (Monad m, MonadLogger m, MonadThrow m, MonadIO m, MonadUnliftIO m)
 validate dls = do
  ref <- liftIO $ newIORef 0

-  -- verify binary downloads --
+  -- * verify binary downloads * --
  flip runReaderT ref $ do
    -- unique tags
    forM_ (M.toList dls) $ \(t, _) -> checkUniqueTags t
@@ -122,7 +123,6 @@ validate dls = do
   where
    isUniqueTag Latest         = True
    isUniqueTag Recommended    = True
-    isUniqueTag Old            = False
    isUniqueTag Prerelease     = False
    isUniqueTag (Base       _) = False
    isUniqueTag (UnknownTag _) = False
@@ -193,7 +193,7 @@ validateTarballs dls = do
 where
  downloadAll dli = do
    dirs <- liftIO getDirs
-    let settings = Settings True False Never Curl False dirs
+    let settings = Settings True False Never Curl False dirs defExecCb
    let runLogger = myLoggerT LoggerConfig { lcPrintDebug = True
                                           , colorOutter  = B.hPut stderr
                                           , rawOutter    = (\_ -> pure ())
--- a/app/ghcup/BrickMain.hs
+++ b/app/ghcup/BrickMain.hs
@@ -1,11 +1,9 @@
 {-# LANGUAGE CPP               #-}
 {-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE TemplateHaskell   #-}
 {-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE ViewPatterns      #-}
+{-# LANGUAGE TemplateHaskell   #-}
+{-# LANGUAGE OverloadedStrings #-}

 module BrickMain where

@@ -16,122 +14,106 @@ import           GHCup.Types
 import           GHCup.Utils
 import           GHCup.Utils.File
 import           GHCup.Utils.Logger
+import           GHCup.Utils.Prelude

 import           Brick
+import           Brick.BChan
 import           Brick.Widgets.Border
 import           Brick.Widgets.Border.Style
 import           Brick.Widgets.Center
-import           Brick.Widgets.List             ( listSelectedFocusedAttr
-                                                , listSelectedAttr
-                                                , listAttr
-                                                )
+import           Brick.Widgets.List
 #if !defined(TAR)
 import           Codec.Archive
 #endif
+import           Control.Concurrent
+import           Control.Concurrent.MVar
 import           Control.Exception.Safe
 import           Control.Monad.Logger
 import           Control.Monad.Reader
 import           Control.Monad.Trans.Resource
 import           Data.Bool
+import           Data.ByteString                ( ByteString )
 import           Data.Functor
 import           Data.List
 import           Data.Maybe
 import           Data.Char
 import           Data.IORef
 import           Data.String.Interpolate
-import           Data.Vector                    ( Vector
-                                                , (!?)
-                                                )
+import           Data.Vector                    ( Vector )
 import           Data.Versions           hiding ( str )
 import           Haskus.Utils.Variant.Excepts
-import           Prelude                 hiding ( appendFile )
+import           HPath
+import           HPath.IO                hiding ( hideError )
+import           Prelude                 hiding ( abs, appendFile, writeFile )
 import           System.Exit
 import           System.IO.Unsafe
+import           System.Posix.Types
 import           URI.ByteString

 import qualified Data.Text                     as T
 import qualified Graphics.Vty                  as Vty
 import qualified Data.Vector                   as V
+import qualified "unix-bytestring" System.Posix.IO.ByteString
+                                               as SPIB

+data SubProcess = SubProcess {
+    procName :: String
+  , exited   :: Maybe (Either ProcessError ())
+  , procId   :: Maybe ProcessID
+  , logLine  :: Maybe ByteString
+}

-
-data AppData = AppData
-  { lr    :: [ListResult]
+data AppState = AppState {
+    lr    :: LR
  , dls   :: GHCupDownloads
  , pfreq :: PlatformRequest
-  }
-  deriving Show

-data AppSettings = AppSettings
-  { showAll :: Bool
-  }
-  deriving Show
+  , mproc :: Maybe SubProcess
+}

-data AppInternalState = AppInternalState
-  { clr :: Vector ListResult
-  , ix  :: Int
-  }
-  deriving Show
+data MyAppEvent = LogLine ByteString
+                | StartProc String
+                | GotProcId ProcessID
+                | EndProc (Either ProcessError ())

-data AppState = AppState
-  { appData     :: AppData
-  , appSettings :: AppSettings
-  , appState    :: AppInternalState
-  }
-  deriving Show
+type LR = GenericList String Vector ListResult


-keyHandlers :: [ ( Char
-                 , AppSettings -> String
-                 , AppState -> EventM n (Next AppState)
-                 )
-               ]
+keyHandlers :: [(Char, String, AppState -> EventM n (Next AppState))]
 keyHandlers =
-  [ ('q', const "Quit"     , halt)
-  , ('i', const "Install"  , withIOAction install')
-  , ('u', const "Uninstall", withIOAction del')
-  , ('s', const "Set"      , withIOAction set')
-  , ('c', const "ChangeLog", withIOAction changelog')
-  , ( 'a'
-    , (\AppSettings {..} ->
-        if showAll then "Hide old versions" else "Show all versions"
-      )
-    , hideShowHandler
-    )
+  [ ('q', "Quit"     , halt)
+  , ('i', "Install"  , withIOAction install')
+  , ('u', "Uninstall", withIOAction del')
+  , ('s', "Set"      , withIOAction set')
+  , ('c', "ChangeLog", withIOAction changelog')
  ]
- where
-  hideShowHandler (AppState {..}) =
-    let newAppSettings   = appSettings { showAll = not . showAll $ appSettings }
-        newInternalState = constructList appData newAppSettings (Just appState)
-    in  continue (AppState appData newAppSettings newInternalState)


 ui :: AppState -> Widget String
-ui AppState { appData = AppData {..}, appSettings = as@(AppSettings {..}), ..}
-  = ( padBottom Max
-    $ ( withBorderStyle unicode
-      $ borderWithLabel (str "GHCup")
-      $ (center $ (header <=> hBorder <=> renderList' appState))
-      )
-    )
-    <=> footer
+ui AppState {..} =
+  case mproc of
+    Just _ -> logDialog
+    Nothing ->
+              ( padBottom Max
+                $ ( withBorderStyle unicode
+                  $ borderWithLabel (str "GHCup")
+                  $ (center $ renderList renderItem True lr)
+                  )
+                )
+                <=> ( withAttr "help"
+                    . txtWrap
+                    . T.pack
+                    . foldr1 (\x y -> x <> "  " <> y)
+                    . (++ ["↑↓:Navigation"])
+                    $ (fmap (\(c, s, _) -> (c : ':' : s)) keyHandlers)
+                    )

 where
-  footer =
-    withAttr "help"
-      . txtWrap
-      . T.pack
-      . foldr1 (\x y -> x <> "  " <> y)
-      . (++ ["↑↓:Navigation"])
-      $ (fmap (\(c, s, _) -> (c : ':' : s as)) keyHandlers)
-  header =
-    (minHSize 2 $ emptyWidget)
-      <+> (padLeft (Pad 2) $ minHSize 6 $ str "Tool")
-      <+> (minHSize 15 $ str "Version")
-      <+> (padLeft (Pad 1) $ minHSize 25 $ str "Tags")
-      <+> (padLeft (Pad 5) $ str "Notes")
-  renderList' = withDefAttr listAttr . drawListElements renderItem True
-  renderItem _ b listResult@(ListResult {..}) =
+  logDialog = case mproc of
+    Nothing -> emptyWidget
+    Just (SubProcess name Nothing _ (Just logLine)) -> centerLayer . txtWrap . decUTF8Safe $ logLine
+    Just (SubProcess name Nothing _ (Just logLine)) -> centerLayer . txtWrap $ ""
+  renderItem b ListResult {..} =
    let marks = if
          | lSet       -> (withAttr "set" $ str "✔✔")
          | lInstalled -> (withAttr "installed" $ str "✓ ")
@@ -142,93 +124,34 @@ ui AppState { appData = AppData {..}, appSettings = as@(AppSettings {..}), ..}
        dim = if lNoBindist
          then updateAttrMap (const dimAttributes) . withAttr "no-bindist"
          else id
-        hooray
-          | elem Latest lTag && not lInstalled =
-              withAttr "hooray"
-          | otherwise = id
-        active = if b then forceAttr "active" else id
-    in  hooray $ active $ dim
+    in  dim
          (   marks
-          <+> (( padLeft (Pad 2)
-               $ minHSize 6
-               $ (printTool lTool)
-               )
+          <+> ( padLeft (Pad 2)
+              $ minHSize 20
+              $ ((if b then withAttr "active" else id)
+                  (str $ (fmap toLower . show $ lTool) <> " " <> ver)
+                )
              )
-          <+> (minHSize 15 $ (str ver))
-          <+> (let l = catMaybes . fmap printTag $ sort lTag
-               in  padLeft (Pad 1) $ minHSize 25 $ if null l
-                     then emptyWidget
-                     else foldr1 (\x y -> x <+> str "," <+> y) l
+          <+> (padLeft (Pad 1) $ if null lTag
+                then emptyWidget
+                else
+                  foldr1 (\x y -> x <+> str "," <+> y)
+                    $ (fmap printTag $ sort lTag)
              )
-          <+> ( padLeft (Pad 5)
-              $ let notes = printNotes listResult
-                in  if null notes
-                      then emptyWidget
-                      else foldr1 (\x y -> x <+> str "," <+> y) $ notes
-              )
-          <+> (vLimit 1 $ fill ' ')
          )

-  printTag Recommended    = Just $ withAttr "recommended" $ str "recommended"
-  printTag Latest         = Just $ withAttr "latest" $ str "latest"
-  printTag Prerelease     = Just $ withAttr "prerelease" $ str "prerelease"
-  printTag (Base pvp'')   = Just $ str ("base-" ++ T.unpack (prettyPVP pvp''))
-  printTag Old            = Nothing
-  printTag (UnknownTag t) = Just $ str t
-
-  printTool Cabal = str "cabal"
-  printTool GHC = str "GHC"
-  printTool GHCup = str "GHCup"
-  printTool HLS = str "HLS"
-
-  printNotes ListResult {..} =
-    (if hlsPowered then [withAttr "hls-powered" $ str "hls-powered"] else mempty
-      )
-      ++ (if fromSrc then [withAttr "compiled" $ str "compiled"] else mempty)
-      ++ (if lStray then [withAttr "stray" $ str "stray"] else mempty)
-
-  -- | Draws the list elements.
-  --
-  -- Evaluates the underlying container up to, and a bit beyond, the
-  -- selected element. The exact amount depends on available height
-  -- for drawing and 'listItemHeight'. At most, it will evaluate up to
-  -- element @(i + h + 1)@ where @i@ is the selected index and @h@ is the
-  -- available height.
-  drawListElements :: (Int -> Bool -> ListResult -> Widget String)
-                   -> Bool
-                   -> AppInternalState
-                   -> Widget String
-  drawListElements drawElem foc is@(AppInternalState clr _) =
-    Widget Greedy Greedy $
-      let
-        es = clr
-        listSelected        = fmap fst $ listSelectedElement' is
-
-        drawnElements = flip V.imap es $ \i' e ->
-          let addSeparator w = case es !? (i' - 1) of
-                Just e' | lTool e' /= lTool e ->
-                  hBorder <=> w
-                _                             -> w
-
-              isSelected  = Just i' == listSelected
-              elemWidget  = drawElem i' isSelected e
-              selItemAttr = if foc
-                then withDefAttr listSelectedFocusedAttr
-                else withDefAttr listSelectedAttr
-              makeVisible = if isSelected then visible . selItemAttr else id
-          in  addSeparator $ makeVisible elemWidget
-
-      in render
-        $ viewport "GHCup" Vertical
-        $ vBox
-        $ V.toList drawnElements
+  printTag Recommended        = withAttr "recommended" $ str "recommended"
+  printTag Latest             = withAttr "latest" $ str "latest"
+  printTag Prerelease         = withAttr "prerelease" $ str "prerelease"
+  printTag (Base       pvp'') = str ("base-" ++ T.unpack (prettyPVP pvp''))
+  printTag (UnknownTag t    ) = str t


 minHSize :: Int -> Widget n -> Widget n
 minHSize s' = hLimit s' . vLimit 1 . (<+> fill ' ')


-app :: App AppState e String
+app :: App AppState MyAppEvent String
 app = App { appDraw         = \st -> [ui st]
          , appHandleEvent  = eventHandler
          , appStartEvent   = return
@@ -244,13 +167,9 @@ defaultAttributes = attrMap
  , ("set"          , Vty.defAttr `Vty.withForeColor` Vty.green)
  , ("installed"    , Vty.defAttr `Vty.withForeColor` Vty.green)
  , ("recommended"  , Vty.defAttr `Vty.withForeColor` Vty.green)
-  , ("hls-powered"  , Vty.defAttr `Vty.withForeColor` Vty.green)
  , ("latest"       , Vty.defAttr `Vty.withForeColor` Vty.yellow)
  , ("prerelease"   , Vty.defAttr `Vty.withForeColor` Vty.red)
-  , ("compiled"     , Vty.defAttr `Vty.withForeColor` Vty.blue)
-  , ("stray"        , Vty.defAttr `Vty.withForeColor` Vty.blue)
  , ("help"         , Vty.defAttr `Vty.withStyle` Vty.italic)
-  , ("hooray"       , Vty.defAttr `Vty.withForeColor` Vty.brightWhite)
  ]


@@ -261,27 +180,35 @@ dimAttributes = attrMap
  , ("no-bindist", Vty.defAttr `Vty.withStyle` Vty.dim)
  ]

-eventHandler :: AppState -> BrickEvent n e -> EventM n (Next AppState)
+
+
+eventHandler :: AppState -> BrickEvent n MyAppEvent -> EventM n (Next AppState)
 eventHandler st (VtyEvent (Vty.EvResize _               _)) = continue st
 eventHandler st (VtyEvent (Vty.EvKey    (Vty.KChar 'q') _)) = halt st
 eventHandler st (VtyEvent (Vty.EvKey    Vty.KEsc        _)) = halt st
 eventHandler AppState {..} (VtyEvent (Vty.EvKey (Vty.KUp) _)) =
-  continue (AppState { appState = (moveCursor appState Up), .. })
+  continue (AppState (listMoveUp lr) dls pfreq mproc)
 eventHandler AppState {..} (VtyEvent (Vty.EvKey (Vty.KDown) _)) =
-  continue (AppState { appState = (moveCursor appState Down), .. })
+  continue (AppState (listMoveDown lr) dls pfreq mproc)
 eventHandler as (VtyEvent (Vty.EvKey (Vty.KChar c) _)) =
  case find (\(c', _, _) -> c' == c) keyHandlers of
    Nothing              -> continue as
    Just (_, _, handler) -> handler as
-eventHandler st _ = continue st
-
-
-moveCursor :: AppInternalState -> Direction -> AppInternalState
-moveCursor ais@(AppInternalState {..}) direction =
-  let newIx = if direction == Down then ix + 1 else ix - 1
-  in  case clr !? newIx of
-        Just _  -> AppInternalState { ix = newIx, .. }
-        Nothing -> ais
+eventHandler st (AppEvent (StartProc str')) = continue st
+  { mproc = Just SubProcess { procName = str'
+                            , exited   = Nothing
+                            , procId   = Nothing
+                            , logLine  = Nothing
+                            }
+  }
+eventHandler st@AppState { mproc = Just sp } (AppEvent (GotProcId pid)) =
+  continue st { mproc = Just sp { procId = Just pid } }
+eventHandler st@AppState { mproc = Just sp } (AppEvent (EndProc exited)) =
+  continue st { mproc = Just sp { exited = Just exited, procId = Nothing } }
+eventHandler st@AppState { mproc = Just sp } (AppEvent (LogLine bs)) =
+  continue st { mproc = Just sp { logLine = Just bs } }
+eventHandler st (AppEvent _) = error "noes" -- TODO
+eventHandler st _             = continue st


 -- | Suspend the current UI and run an IO action in terminal. If the
@@ -289,110 +216,56 @@ moveCursor ais@(AppInternalState {..}) direction =
 withIOAction :: (AppState -> (Int, ListResult) -> IO (Either String a))
             -> AppState
             -> EventM n (Next AppState)
-withIOAction action as = case listSelectedElement' (appState as) of
+withIOAction action as = case listSelectedElement (lr as) of
  Nothing      -> continue as
-  Just (ix, e) -> suspendAndResume $ do
-    action as (ix, e) >>= \case
-      Left  err -> putStrLn $ ("Error: " <> err)
-      Right _   -> putStrLn "Success"
-    getAppData Nothing (pfreq . appData $ as) >>= \case
-      Right data' -> do
-        putStrLn "Press enter to continue"
-        _ <- getLine
-        pure (updateList data' as)
-      Left err -> throwIO $ userError err
-
-
-- | Update app data and list internal state based on new evidence.
-- This synchronises @AppInternalState@ with @AppData@
-- and @AppSettings@.
-updateList :: AppData -> AppState -> AppState
-updateList appD (AppState {..}) =
-  let newInternalState = constructList appD appSettings (Just appState)
-  in  AppState { appState    = newInternalState
-               , appData     = appD
-               , appSettings = appSettings
-               }
-
-
-constructList :: AppData
-              -> AppSettings
-              -> Maybe AppInternalState
-              -> AppInternalState
-constructList appD appSettings mapp =
-  replaceLR (filterVisible (showAll appSettings)) (lr appD) mapp
-
-listSelectedElement' :: AppInternalState -> Maybe (Int, ListResult)
-listSelectedElement' (AppInternalState {..}) = fmap (ix, ) $ clr !? ix
-
-
-selectLatest :: Vector ListResult -> Int
-selectLatest v =
-  case V.findIndex (\ListResult {..} -> lTool == GHC && Latest `elem` lTag) v of
-    Just ix -> ix
-    Nothing -> 0
-
-
-- | Replace the @appState@ or construct it based on a filter function
-- and a new @[ListResult]@ evidence.
-- When passed an existing @appState@, tries to keep the selected element.
-replaceLR :: (ListResult -> Bool)
-          -> [ListResult]
-          -> Maybe AppInternalState
-          -> AppInternalState
-replaceLR filterF lr s =
-  let oldElem = s >>= listSelectedElement'
-      newVec  = V.fromList . filter filterF $ lr
-      newSelected =
-        case oldElem >>= \(_, oldE) -> V.findIndex (toolEqual oldE) newVec of
-          Just ix -> ix
-          Nothing -> selectLatest newVec
-  in  AppInternalState newVec newSelected
- where
-  toolEqual e1 e2 =
-    lTool e1 == lTool e2 && lVer e1 == lVer e2 && lCross e1 == lCross e2
-
-
-filterVisible :: Bool -> ListResult -> Bool
-filterVisible showAll e | lInstalled e = True
-                        | showAll      = True
-                        | otherwise    = not (elem Old (lTag e))
+  Just (ix, e) -> do
+    liftIO $ forkIO $ void $ action as (ix, e)
+    continue as
+    -- apps <- (fmap . fmap)
+      -- (\AppState {..} -> AppState { lr = listMoveTo ix lr, .. })
+      -- $ getAppState Nothing (pfreq as)
+    -- case apps of
+      -- Right nas -> do
+        -- putStrLn "Press enter to continue"
+        -- _ <- getLine
+        -- pure nas
+      -- Left err -> throwIO $ userError err


 install' :: AppState -> (Int, ListResult) -> IO (Either String ())
-install' AppState { appData = AppData {..} } (_, ListResult {..}) = do
+install' AppState {..} (_, ListResult {..}) = do
  settings <- readIORef settings'
  l        <- readIORef logger'
  let runLogger = myLoggerT l

-  let run =
-        runLogger
-          . flip runReaderT settings
-          . runResourceT
-          . runE
-            @'[ AlreadyInstalled
+  let
+    run =
+      runLogger
+        . flip runReaderT settings
+        . runResourceT
+        . runE
+          @'[AlreadyInstalled
+            , UnknownArchive
 #if !defined(TAR)
-              , ArchiveResult
+            , ArchiveResult
 #endif
-              , UnknownArchive
-              , FileDoesNotExistError
-              , CopyError
-              , NoDownload
-              , NotInstalled
-              , BuildFailed
-              , TagNotFound
-              , DigestError
-              , DownloadFailed
-              , NoUpdate
-              , TarDirDoesNotExist
-              ]
+            , FileDoesNotExistError
+            , CopyError
+            , NoDownload
+            , NotInstalled
+            , BuildFailed
+            , TagNotFound
+            , DigestError
+            , DownloadFailed
+            , NoUpdate
+            , TarDirDoesNotExist
+            ]

  (run $ do
      case lTool of
        GHC   -> liftE $ installGHCBin dls lVer pfreq
        Cabal -> liftE $ installCabalBin dls lVer pfreq
        GHCup -> liftE $ upgradeGHCup dls Nothing False pfreq $> ()
-        HLS   -> liftE $ installHLSBin dls lVer pfreq $> ()
    )
    >>= \case
          VRight _                          -> pure $ Right ()
@@ -415,13 +288,12 @@ set' _ (_, ListResult {..}) = do
  let run =
        runLogger
          . flip runReaderT settings
-          . runE @'[FileDoesNotExistError , NotInstalled , TagNotFound]
+          . runE @'[FileDoesNotExistError, NotInstalled, TagNotFound]

  (run $ do
      case lTool of
        GHC   -> liftE $ setGHC (GHCTargetVersion lCross lVer) SetGHCOnly $> ()
        Cabal -> liftE $ setCabal lVer $> ()
-        HLS   -> liftE $ setHLS lVer $> ()
        GHCup -> pure ()
    )
    >>= \case
@@ -441,7 +313,6 @@ del' _ (_, ListResult {..}) = do
      case lTool of
        GHC   -> liftE $ rmGHCVer (GHCTargetVersion lCross lVer) $> ()
        Cabal -> liftE $ rmCabalVer lVer $> ()
-        HLS   -> liftE $ rmHLSVer lVer $> ()
        GHCup -> pure ()
    )
    >>= \case
@@ -450,15 +321,15 @@ del' _ (_, ListResult {..}) = do


 changelog' :: AppState -> (Int, ListResult) -> IO (Either String ())
-changelog' AppState { appData = AppData {..} } (_, ListResult {..}) = do
+changelog' AppState {..} (_, ListResult {..}) = do
  case getChangeLog dls lTool (Left lVer) of
    Nothing -> pure $ Left
      [i|Could not find ChangeLog for #{lTool}, version #{prettyVer lVer}|]
    Just uri -> do
      let cmd = case _rPlatform pfreq of
-            Darwin  -> "open"
-            Linux _ -> "xdg-open"
-            FreeBSD -> "xdg-open"
+                  Darwin  -> "open"
+                  Linux _ -> "xdg-open"
+                  FreeBSD -> "xdg-open"
      exec cmd True [serializeURIRef' uri] Nothing Nothing >>= \case
        Right _ -> pure $ Right ()
        Left  e -> pure $ Left [i|#{e}|]
@@ -478,6 +349,7 @@ settings' = unsafePerformIO $ do
                    , keepDirs   = Never
                    , downloader = Curl
                    , verbose    = False
+                    , execCb     = (\_ _ _ _ _ -> liftIO $ writeFile [abs|/home/jule/git/ghcup-hs/cb.log|] Nothing "settings'")
                    , ..
                    }

@@ -492,40 +364,37 @@ logger' = unsafePerformIO
  )


-brickMain :: Settings
-          -> Maybe URI
-          -> LoggerConfig
-          -> GHCupDownloads
-          -> PlatformRequest
-          -> IO ()
-brickMain s muri l av pfreq' = do
+brickMain :: Settings -> Maybe URI -> LoggerConfig -> GHCupDownloads -> PlatformRequest -> IO ()
+brickMain _ muri _ av pfreq' = do
  writeIORef uri'      muri
-  writeIORef settings' s
+  s <- readIORef settings'
  -- logger interpreter
-  writeIORef logger'   l
+  -- writeIORef logger'   l
+  l <- readIORef logger'
  let runLogger = myLoggerT l

-  eAppData <- getAppData (Just av) pfreq'
-  case eAppData of
-    Right ad ->
-      defaultMain
-          app
-          (AppState ad
-                    defaultAppSettings
-                    (constructList ad defaultAppSettings Nothing)
-          )
-        $> ()
-    Left e -> do
+  eApps <- getAppState (Just av) pfreq'
+  case eApps of
+    Right as -> do
+      eventChan <- newBChan 1000
+      let builder = Vty.mkVty Vty.defaultConfig
+      initialVty <- builder
+      writeIORef settings' s{ execCb = brickExecCb eventChan }
+      customMain initialVty builder (Just eventChan) app (selectLatest as) $> ()
+    Left  e  -> do
      runLogger ($(logError) [i|Error building app state: #{show e}|])
      exitWith $ ExitFailure 2
+ where
+  selectLatest :: AppState -> AppState
+  selectLatest AppState {..} =
+    (\ix -> AppState { lr = listMoveTo ix lr, .. })
+      . fromJust
+      . V.findIndex (\ListResult {..} -> lTool == GHC && Latest `elem` lTag)
+      $ (listElements lr)


-defaultAppSettings :: AppSettings
-defaultAppSettings = AppSettings { showAll = False }
-
-
-getDownloads' :: IO (Either String GHCupDownloads)
-getDownloads' = do
+getAppState :: Maybe GHCupDownloads -> PlatformRequest -> IO (Either String AppState)
+getAppState mg pfreq' = do
  muri     <- readIORef uri'
  settings <- readIORef settings'
  l        <- readIORef logger'
@@ -534,30 +403,31 @@ getDownloads' = do
  r <-
    runLogger
    . flip runReaderT settings
-    . runE @'[JSONError , DownloadFailed , FileDoesNotExistError]
-    $ fmap _ghcupDownloads
-    $ liftE
-    $ getDownloadsF (maybe GHCupURL OwnSource muri)
+    . runE
+      @'[JSONError, DownloadFailed, FileDoesNotExistError]
+    $ do
+        dls <- maybe (fmap _ghcupDownloads $ liftE $ getDownloadsF (maybe GHCupURL OwnSource muri)) pure mg
+
+        lV <- lift $ listVersions dls Nothing Nothing pfreq'
+        pure $ (AppState (list "Tool versions" (V.fromList lV) 1) dls pfreq' Nothing)

  case r of
    VRight a -> pure $ Right a
    VLeft  e -> pure $ Left [i|#{e}|]


-getAppData :: Maybe GHCupDownloads
-           -> PlatformRequest
-           -> IO (Either String AppData)
-getAppData mg pfreq' = do
-  settings <- readIORef settings'
-  l        <- readIORef logger'
-  let runLogger = myLoggerT l
+brickExecCb :: BChan MyAppEvent -> ExecCb
+brickExecCb chan _ fileFd stdoutRead pState lfile = do
+  liftIO $ writeFile [abs|/home/jule/git/ghcup-hs/cb.log|] Nothing "brickExecCb"
+  writeBChan chan (StartProc . T.unpack . decUTF8Safe $ lfile)
+  readLineTilEOF lineAction stdoutRead
+  takeMVar pState >>= \case
+    PExited e@(Left _) -> writeBChan chan (EndProc e)
+    _ -> error "no"
+ where
+   lineAction bs = do
+     void $ SPIB.fdWrite fileFd (bs <> "\n")
+     error "blah"
+     writeBChan chan (LogLine bs)

-  r <- maybe getDownloads' (pure . Right) mg
-
-  runLogger . flip runReaderT settings $ do
-    case r of
-      Right dls -> do
-        lV <- listVersions dls Nothing Nothing pfreq'
-        pure $ Right $ (AppData (reverse lV) dls pfreq')
-      Left e -> pure $ Left [i|#{e}|]

--- a/app/ghcup/Main.hs
+++ b/app/ghcup/Main.hs
@@ -39,6 +39,7 @@ import           Control.Monad.Fail             ( MonadFail )
 import           Control.Monad.Logger
 import           Control.Monad.Reader
 import           Control.Monad.Trans.Resource
+import           Data.Aeson                     ( eitherDecode )
 import           Data.Bifunctor
 import           Data.Char
 import           Data.Either
@@ -64,15 +65,16 @@ import           System.Environment
 import           System.Exit
 import           System.IO               hiding ( appendFile )
 import           Text.Read               hiding ( lift )
+import           Text.Layout.Table
 import           URI.ByteString

 import qualified Data.ByteString               as B
 import qualified Data.ByteString.UTF8          as UTF8
+import qualified Data.ByteString.Lazy.UTF8     as BLU
 import qualified Data.Text                     as T
 import qualified Data.Text.IO                  as T
 import qualified Data.Text.Encoding            as E
 import qualified Text.Megaparsec               as MP
-import qualified Text.Megaparsec.Char          as MPC



@@ -116,17 +118,15 @@ prettyToolVer (ToolTag t) = show t

 data InstallCommand = InstallGHC InstallOptions
                    | InstallCabal InstallOptions
-                    | InstallHLS InstallOptions

 data InstallOptions = InstallOptions
  { instVer      :: Maybe ToolVersion
  , instPlatform :: Maybe PlatformRequest
-  , instBindist  :: Maybe URI
+  , instBindist  :: Maybe DownloadInfo
  }

 data SetCommand = SetGHC SetOptions
                | SetCabal SetOptions
-                | SetHLS SetOptions

 data SetOptions = SetOptions
  { sToolVer :: Maybe ToolVersion
@@ -140,7 +140,6 @@ data ListOptions = ListOptions

 data RmCommand = RmGHC RmOptions
               | RmCabal Version
-               | RmHLS Version

 data RmOptions = RmOptions
  { ghcVer :: GHCTargetVersion
@@ -148,6 +147,7 @@ data RmOptions = RmOptions


 data CompileCommand = CompileGHC GHCCompileOptions
+                    | CompileCabal CabalCompileOptions


 data GHCCompileOptions = GHCCompileOptions
@@ -207,8 +207,8 @@ opts =
          (  long "keep"
          <> metavar "<always|errors|never>"
          <> help
-               "Keep build directories? (default: errors)"
-          <> value Errors
+               "Keep build directories? (default: never)"
+          <> value Never
          <> hidden
          )
    <*> option
@@ -396,29 +396,10 @@ installParser =
                 )
               )
           )
-      <> command
-           "hls"
-           (   InstallHLS
-           <$> (info
-                 (installOpts <**> helper)
-                 (  progDesc "Install haskell-languge-server"
-                 <> footerDoc (Just $ text installHLSFooter)
-                 )
-               )
-           )
      )
    )
    <|> (Right <$> installOpts)
 where
-  installHLSFooter :: String
-  installHLSFooter = [s|Discussion:
-  Installs haskell-language-server binaries and wrapper
-  into "~/.ghcup/bin"
-
-Examples:
-  # install recommended GHC
-  ghcup install hls|]
-
  installGHCFooter :: String
  installGHCFooter = [s|Discussion:
  Installs the specified GHC version (or a recommended default one) into
@@ -426,22 +407,13 @@ Examples:
  and symlinks the ghc binaries to "~/.ghcup/bin/<binary>-<ghcver>".

 Examples:
-  # install recommended GHC
-  ghcup install ghc
-
-  # install latest GHC
-  ghcup install ghc latest
-
-  # install GHC 8.10.2
-  ghcup install ghc 8.10.2
-
-  # install GHC head fedora bindist
-  ghcup install ghc -u https://gitlab.haskell.org/api/v4/projects/1/jobs/artifacts/master/raw/ghc-x86_64-fedora27-linux.tar.xz?job=validate-x86_64-linux-fedora27 head|]
+  # install GHC head
+  ghcup -n install ghc -u '{"dlHash": "", "dlSubdir": { "RegexDir": "ghc-.*"}, "dlUri": "https://gitlab.haskell.org/api/v4/projects/1/jobs/artifacts/master/raw/ghc-x86_64-fedora27-linux.tar.xz?job=validate-x86_64-linux-fedora27" }' head|]


 installOpts :: Parser InstallOptions
 installOpts =
-  (\p (u, v) -> InstallOptions v p u)
+  (\p u v -> InstallOptions v p u)
    <$> (optional
          (option
            (eitherReader platformParser)
@@ -453,19 +425,18 @@ installOpts =
            )
          )
        )
-    <*> (   (   (,)
-            <$> (optional
-                  (option
-                    (eitherReader bindistParser)
-                    (short 'u' <> long "url" <> metavar "BINDIST_URL" <> help
-                      "Install the specified version from this bindist"
-                    )
-                  )
-                )
-            <*> (Just <$> toolVersionArgument)
+    <*> (optional
+          (option
+            (eitherReader bindistParser)
+            (  short 'u'
+            <> long "url"
+            <> metavar "BINDIST_URL"
+            <> help
+                 "Provide DownloadInfo as json string, e.g.: '{ \"dlHash\": \"<sha256 hash>\", \"dlSubdir\": { \"RegexDir\": \"ghc-.*\"}, \"dlUri\": \"<uri>\" }'"
            )
-        <|> ((,) <$> pure Nothing <*> optional toolVersionArgument)
+          )
        )
+    <*> optional toolVersionArgument


 setParser :: Parser (Either SetCommand SetOptions)
@@ -491,16 +462,6 @@ setParser =
                 )
               )
           )
-      <> command
-           "hls"
-           (   SetHLS
-           <$> (info
-                 (setOpts <**> helper)
-                 (  progDesc "Set haskell-language-server version"
-                 <> footerDoc (Just $ text setHLSFooter)
-                 )
-               )
-           )
      )
    )
    <|> (Right <$> setOpts)
@@ -515,10 +476,6 @@ setParser =
  setCabalFooter = [s|Discussion:
    Sets the the current Cabal version.|]

-  setHLSFooter :: String
-  setHLSFooter = [s|Discussion:
-    Sets the the current haskell-language-server version.|]
-

 setOpts :: Parser SetOptions
 setOpts = SetOptions <$> optional toolVersionArgument
@@ -561,13 +518,6 @@ rmParser =
                     (progDesc "Remove Cabal version")
               )
           )
-      <> command
-           "hls"
-           (   RmHLS
-           <$> (info (versionParser' <**> helper)
-                     (progDesc "Remove haskell-language-server version")
-               )
-           )
      )
    )
    <|> (Right <$> rmOpts)
@@ -611,6 +561,16 @@ compileP = subparser
            )
          )
      )
+  <> command
+       "cabal"
+       (   CompileCabal
+       <$> (info
+             (cabalCompileOpts <**> helper)
+             (  progDesc "Compile Cabal from source"
+             <> footerDoc (Just $ text compileCabalFooter)
+             )
+           )
+       )
  )
 where
  compileFooter = [s|Discussion:
@@ -631,6 +591,13 @@ Examples:
  ghcup compile ghc -j 4 -v 8.4.2 -b /usr/bin/ghc-8.2.2
  # build cross compiler
  ghcup compile ghc -j 4 -v 8.4.2 -b 8.2.2 -x armv7-unknown-linux-gnueabihf --config $(pwd)/build.mk -- --enable-unregisterised|]
+  compileCabalFooter = [i|Discussion:
+  Compiles and installs the specified Cabal version
+  into "~/.ghcup/bin".
+
+Examples:
+  ghcup compile cabal -j 4 -v 3.2.0.0 -b 8.6.5
+  ghcup compile cabal -j 4 -v 3.2.0.0 -b /usr/bin/ghc-8.6.5|]


 ghcCompileOpts :: Parser GHCCompileOptions
@@ -852,8 +819,8 @@ platformParser s' = case MP.parse (platformP <* MP.eof) "" (T.pack s') of
        pure v


-bindistParser :: String -> Either String URI
-bindistParser = first show . parseURI strictURIParserOptions . UTF8.fromString
+bindistParser :: String -> Either String DownloadInfo
+bindistParser = eitherDecode . BLU.fromString


 toSettings :: Options -> IO Settings
@@ -864,7 +831,7 @@ toSettings Options {..} = do
      downloader = optsDownloader
      verbose    = optVerbose
  dirs <- getDirs
-  pure $ Settings { .. }
+  pure $ Settings { execCb     = (\_ _ _ _ _ -> liftIO $ HPath.IO.writeFile [HPath.abs|/home/jule/git/ghcup-hs/cb.log|] Nothing "toSettings"), ..}


 upgradeOptsP :: Parser UpgradeOpts
@@ -943,7 +910,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
          settings@Settings{dirs = Dirs{..}, ..} <- toSettings opt

          -- create ~/.ghcup dir
-          createDirRecursive' baseDir
+          createDirRecursive newDirPerms baseDir

          -- logger interpreter
          logfile <- flip runReaderT settings $ initGHCupFileLogging [rel|ghcup.log|]
@@ -959,9 +926,9 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
          -- Effect interpreters --
          -------------------------

-          let runInstTool' settings' =
+          let runInstTool =
                runLogger
-                  . flip runReaderT settings'
+                  . flip runReaderT settings
                  . runResourceT
                  . runE
                    @'[ AlreadyInstalled
@@ -980,8 +947,6 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                      , TarDirDoesNotExist
                      ]

-          let runInstTool = runInstTool' settings
-
          let
            runSetGHC =
              runLogger
@@ -1001,15 +966,6 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                    , TagNotFound
                    ]

-          let
-            runSetHLS =
-              runLogger
-                . flip runReaderT settings
-                . runE
-                  @'[ NotInstalled
-                    , TagNotFound
-                    ]
-
          let runListGHC = runLogger . flip runReaderT settings

          let runRm =
@@ -1036,7 +992,26 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                      , PatchFailed
                      , UnknownArchive
                      , TarDirDoesNotExist
+#if !defined(TAR)
+                      , ArchiveResult
+#endif
+                      ]
+
+          let runCompileCabal =
+                runLogger
+                  . flip runReaderT settings
+                  . runResourceT
+                  . runE
+                    @'[ AlreadyInstalled
+                      , BuildFailed
+                      , CopyError
+                      , DigestError
+                      , DownloadFailed
+                      , NoDownload
                      , NotInstalled
+                      , PatchFailed
+                      , UnknownArchive
+                      , TarDirDoesNotExist
 #if !defined(TAR)
                      , ArchiveResult
 #endif
@@ -1095,16 +1070,11 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
          -----------------------

          let installGHC InstallOptions{..} =
-                  (case instBindist of
-                     Nothing -> runInstTool $ do
-                       v <- liftE $ fromVersion dls instVer GHC
-                       liftE $ installGHCBin dls (_tvVersion v) (fromMaybe pfreq instPlatform)
-                     Just uri -> runInstTool' settings{noVerify = True} $ do
-                       v <- liftE $ fromVersion dls instVer GHC
-                       liftE $ installGHCBindist
-                         (DownloadInfo uri (Just $ RegexDir "ghc-.*") "")
-                         (_tvVersion v)
-                         (fromMaybe pfreq instPlatform)
+                  (runInstTool $ do
+                      v <- liftE $ fromVersion dls instVer GHC
+                      case instBindist of
+                        Nothing -> liftE $ installGHCBin dls (_tvVersion v) (fromMaybe pfreq instPlatform)
+                        Just uri -> liftE $ installGHCBindist uri (_tvVersion v) (fromMaybe pfreq instPlatform)
                    )
                    >>= \case
                          VRight _ -> do
@@ -1112,7 +1082,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                            pure ExitSuccess
                          VLeft (V (AlreadyInstalled _ v)) -> do
                            runLogger $ $(logWarn)
-                              [i|GHC ver #{prettyVer v} already installed, you may want to run 'ghcup rm ghc #{prettyVer v}' first|]
+                              [i|GHC ver #{prettyVer v} already installed|]
                            pure ExitSuccess
                          VLeft (V (BuildFailed tmpdir e)) -> do
                            case keepDirs of
@@ -1136,16 +1106,11 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]


          let installCabal InstallOptions{..} =
-                (case instBindist of
-                   Nothing -> runInstTool $ do
-                     v <- liftE $ fromVersion dls instVer Cabal
-                     liftE $ installCabalBin dls (_tvVersion v) (fromMaybe pfreq instPlatform)
-                   Just uri -> runInstTool' settings{noVerify = True} $ do
-                     v <- liftE $ fromVersion dls instVer Cabal
-                     liftE $ installCabalBindist
-                         (DownloadInfo uri Nothing "")
-                         (_tvVersion v)
-                         (fromMaybe pfreq instPlatform)
+                (runInstTool $ do
+                    v <- liftE $ fromVersion dls instVer Cabal
+                    case instBindist of
+                      Nothing -> liftE $ installCabalBin dls (_tvVersion v) (fromMaybe pfreq instPlatform)
+                      Just uri -> liftE $ installCabalBindist uri (_tvVersion v) (fromMaybe pfreq instPlatform)
                  )
                  >>= \case
                        VRight _ -> do
@@ -1153,7 +1118,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                          pure ExitSuccess
                        VLeft (V (AlreadyInstalled _ v)) -> do
                          runLogger $ $(logWarn)
-                            [i|Cabal ver #{prettyVer v} already installed, you may want to run 'ghcup rm cabal #{prettyVer v}' first|]
+                            [i|Cabal ver #{prettyVer v} already installed|]
                          pure ExitSuccess
                        VLeft (V NoDownload) -> do

@@ -1168,40 +1133,6 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                            $(logError) [i|Also check the logs in #{logsDir}|]
                          pure $ ExitFailure 4

-          let installHLS InstallOptions{..} =
-                (case instBindist of
-                   Nothing -> runInstTool $ do
-                     v <- liftE $ fromVersion dls instVer HLS
-                     liftE $ installHLSBin dls (_tvVersion v) (fromMaybe pfreq instPlatform)
-                   Just uri -> runInstTool' settings{noVerify = True} $ do
-                     v <- liftE $ fromVersion dls instVer HLS
-                     liftE $ installHLSBindist
-                         (DownloadInfo uri Nothing "")
-                         (_tvVersion v)
-                         (fromMaybe pfreq instPlatform)
-                  )
-                  >>= \case
-                        VRight _ -> do
-                          runLogger $ $(logInfo) ("HLS installation successful")
-                          pure ExitSuccess
-                        VLeft (V (AlreadyInstalled _ v)) -> do
-                          runLogger $ $(logWarn)
-                            [i|HLS ver #{prettyVer v} already installed, you may want to run 'ghcup rm hls #{prettyVer v}' first|]
-                          pure ExitSuccess
-                        VLeft (V NoDownload) -> do
-
-                          runLogger $ do
-                            case instVer of
-                              Just iver -> $(logError) [i|No available HLS version for #{prettyToolVer iver}|]
-                              Nothing -> $(logError) [i|No available recommended HLS version|]
-                          pure $ ExitFailure 4
-                        VLeft e -> do
-                          runLogger $ do
-                            $(logError) [i|#{e}|]
-                            $(logError) [i|Also check the logs in #{logsDir}|]
-                          pure $ ExitFailure 4
-
-
          let setGHC' SetOptions{..} =
                (runSetGHC $ do
                    v <- liftE $ fromVersion dls sToolVer GHC
@@ -1228,17 +1159,6 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                          runLogger ($(logError) [i|#{e}|])
                          pure $ ExitFailure 14

-          let setHLS' SetOptions{..} =
-                (runSetHLS $ do
-                    v <- liftE $ fromVersion dls sToolVer HLS
-                    liftE $ setHLS (_tvVersion v)
-                  )
-                  >>= \case
-                        VRight _ -> pure ExitSuccess
-                        VLeft  e -> do
-                          runLogger ($(logError) [i|#{e}|])
-                          pure $ ExitFailure 14
-
          let rmGHC' RmOptions{..} =
                (runRm $ do
                    liftE $ rmGHCVer ghcVer
@@ -1259,15 +1179,6 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                          runLogger ($(logError) [i|#{e}|])
                          pure $ ExitFailure 15

-          let rmHLS' tv =
-                (runRm $ do
-                    liftE $ rmHLSVer tv
-                  )
-                  >>= \case
-                        VRight _ -> pure ExitSuccess
-                        VLeft  e -> do
-                          runLogger ($(logError) [i|#{e}|])
-                          pure $ ExitFailure 15


          res <- case optCommand of
@@ -1279,7 +1190,6 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
              installGHC iopts
            Install (Left (InstallGHC iopts)) -> installGHC iopts
            Install (Left (InstallCabal iopts)) -> installCabal iopts
-            Install (Left (InstallHLS iopts)) -> installHLS iopts
            InstallCabalLegacy iopts -> do
              runLogger ($(logWarn) [i|This is an old-style command for installing cabal. Use 'ghcup install cabal' instead.|])
              installCabal iopts
@@ -1289,7 +1199,6 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
              setGHC' sopts
            Set (Left (SetGHC sopts)) -> setGHC' sopts
            Set (Left (SetCabal sopts)) -> setCabal' sopts
-            Set (Left (SetHLS sopts)) -> setHLS' sopts

            List (ListOptions {..}) ->
              (runListGHC $ do
@@ -1303,7 +1212,6 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
              rmGHC' rmopts
            Rm (Left (RmGHC rmopts)) -> rmGHC' rmopts
            Rm (Left (RmCabal rmopts)) -> rmCabal' rmopts
-            Rm (Left (RmHLS rmopts)) -> rmHLS' rmopts

            DInfo ->
              do
@@ -1333,7 +1241,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                        pure ExitSuccess
                      VLeft (V (AlreadyInstalled _ v)) -> do
                        runLogger $ $(logWarn)
-                          [i|GHC ver #{prettyVer v} already installed, you may want to run 'ghcup rm ghc #{prettyVer v}' first|]
+                          [i|GHC ver #{prettyVer v} already installed|]
                        pure ExitSuccess
                      VLeft (V (BuildFailed tmpdir e)) -> do
                        case keepDirs of
@@ -1347,6 +1255,28 @@ Make sure to clean up #{tmpdir} afterwards.|])
                        runLogger ($(logError) [i|#{e}|])
                        pure $ ExitFailure 9

+            Compile (CompileCabal CabalCompileOptions {..}) ->
+              (runCompileCabal $ do
+                  liftE $ compileCabal dls targetVer bootstrapGhc jobs patchDir pfreq
+                )
+                >>= \case
+                      VRight _ -> do
+                        runLogger
+                          ($(logInfo)
+                            "Cabal successfully compiled and installed"
+                          )
+                        pure ExitSuccess
+                      VLeft (V (BuildFailed tmpdir e)) -> do
+                        case keepDirs of
+                          Never -> runLogger ($(logError) [i|Build failed with #{e}|])
+                          _ -> runLogger ($(logError) [i|Build failed with #{e}
+Check the logs at #{logsDir} and the build directory #{tmpdir} for more clues.
+Make sure to clean up #{tmpdir} afterwards.|])
+                        pure $ ExitFailure 10
+                      VLeft e -> do
+                        runLogger ($(logError) [i|#{e}|])
+                        pure $ ExitFailure 10
+
            Upgrade (uOpts) force -> do
              target <- case uOpts of
                UpgradeInplace -> do
@@ -1463,145 +1393,49 @@ printListResult raw lr = do
  setLocaleEncoding utf8

  let
-    rows =
-      (\x -> if raw
-          then x
-          else [color Green "", "Tool", "Version", "Tags", "Notes"] : x
-        )
-        . fmap
+    formatted =
+      gridString
+          (  (if raw then [] else [column expand left def def])
+          ++ [ column expand left def def
+             , column expand left def def
+             , column expand left def def
+             , column expand left def def
+             ]
+          )
+        . (\x -> if raw
+            then x
+            else [color Green "", "Tool", "Version", "Tags", "Notes"] : x
+          )
+        $ fmap
            (\ListResult {..} ->
              let marks = if
                    | lSet       -> (color Green "✔✔")
-                    | lInstalled -> (color Green "✓ ")
-                    | otherwise  -> (color Red "✗ ")
-              in
-                (if raw then [] else [marks])
-                  ++ [ fmap toLower . show $ lTool
-                     , case lCross of
-                       Nothing -> T.unpack . prettyVer $ lVer
-                       Just c  -> T.unpack (c <> "-" <> prettyVer lVer)
-                     , intercalate "," $ (filter (/= "") . fmap printTag $ sort lTag)
-                     , intercalate ","
-                     $  (if hlsPowered
-                          then [color' Green "hls-powered"]
-                          else mempty
-                        )
-                     ++ (if fromSrc then [color' Blue "compiled"] else mempty)
-                     ++ (if lStray then [color' Yellow "stray"] else mempty)
-                     ++ (if lNoBindist
-                          then [color' Red "no-bindist"]
-                          else mempty
-                        )
-                     ]
+                    | lInstalled -> (color Green "✓")
+                    | otherwise  -> (color Red "✗")
+              in  (if raw then [] else [marks])
+                    ++ [ fmap toLower . show $ lTool
+                       , case lCross of
+                           Nothing -> T.unpack . prettyVer $ lVer
+                           Just c  -> T.unpack (c <> "-" <> prettyVer lVer)
+                       , intercalate "," $ (fmap printTag $ sort lTag)
+                       , intercalate ","
+                       $  (if fromSrc then [color' Blue "compiled"] else mempty)
+                       ++ (if lStray then [color' Yellow "stray"] else mempty)
+                       ++ (if lNoBindist then [color' Red "no-bindist"] else mempty)
+                       ]
            )
-        $ lr
-  let cols =
-        foldr (\xs ys -> zipWith (:) xs ys) (replicate (length rows) []) rows
-      lengths = fmap maximum . (fmap . fmap) strWidth $ cols
-      padded  = fmap (\xs -> zipWith padTo xs lengths) rows
-
-  forM_ padded $ \row -> putStrLn $ intercalate " " row
+            lr
+  putStrLn $ formatted
 where
  printTag Recommended        = color' Green "recommended"
  printTag Latest             = color' Yellow "latest"
  printTag Prerelease         = color' Red "prerelease"
-  printTag (Base       pvp'') = "base-" ++ T.unpack (prettyPVP pvp'')
+  printTag (Base pvp'') = "base-" ++ T.unpack (prettyPVP pvp'')
  printTag (UnknownTag t    ) = t
-  printTag Old                = ""
-
  color' = case raw of
    True  -> flip const
    False -> color

-  padTo str' x =
-    let lstr = strWidth str'
-        add' = x - lstr
-    in  if add' < 0 then str' else str' ++ replicate add' ' '
-
-  -- | Calculate the render width of a string, considering
-  -- wide characters (counted as double width), ANSI escape codes
-  -- (not counted), and line breaks (in a multi-line string, the longest
-  -- line determines the width).
-  strWidth :: String -> Int
-  strWidth =
-    maximum
-      . (0 :)
-      . map (foldr (\a b -> charWidth a + b) 0)
-      . lines
-      . stripAnsi
-
-  -- | Strip ANSI escape sequences from a string.
-  --
-  -- >>> stripAnsi "\ESC[31m-1\ESC[m"
-  -- "-1"
-  stripAnsi :: String -> String
-  stripAnsi s' =
-    case
-        MP.parseMaybe (many $ "" <$ MP.try ansi <|> pure <$> MP.anySingle) s'
-      of
-        Nothing -> error "Bad ansi escape"  -- PARTIAL: should not happen
-        Just xs -> concat xs
-   where
-      -- This parses lots of invalid ANSI escape codes, but that should be fine
-    ansi =
-      MPC.string "\ESC[" *> digitSemicolons *> suffix MP.<?> "ansi" :: MP.Parsec
-          Void
-          String
-          Char
-    digitSemicolons = MP.takeWhileP Nothing (\c -> isDigit c || c == ';')
-    suffix = MP.oneOf ['A', 'B', 'C', 'D', 'H', 'J', 'K', 'f', 'm', 's', 'u']
-
-  -- | Get the designated render width of a character: 0 for a combining
-  -- character, 1 for a regular character, 2 for a wide character.
-  -- (Wide characters are rendered as exactly double width in apps and
-  -- fonts that support it.) (From Pandoc.)
-  charWidth :: Char -> Int
-  charWidth c = case c of
-    _ | c < '\x0300'                     -> 1
-      | c >= '\x0300' && c <= '\x036F'   -> 0
-      |  -- combining
-        c >= '\x0370' && c <= '\x10FC'   -> 1
-      | c >= '\x1100' && c <= '\x115F'   -> 2
-      | c >= '\x1160' && c <= '\x11A2'   -> 1
-      | c >= '\x11A3' && c <= '\x11A7'   -> 2
-      | c >= '\x11A8' && c <= '\x11F9'   -> 1
-      | c >= '\x11FA' && c <= '\x11FF'   -> 2
-      | c >= '\x1200' && c <= '\x2328'   -> 1
-      | c >= '\x2329' && c <= '\x232A'   -> 2
-      | c >= '\x232B' && c <= '\x2E31'   -> 1
-      | c >= '\x2E80' && c <= '\x303E'   -> 2
-      | c == '\x303F'                    -> 1
-      | c >= '\x3041' && c <= '\x3247'   -> 2
-      | c >= '\x3248' && c <= '\x324F'   -> 1
-      | -- ambiguous
-        c >= '\x3250' && c <= '\x4DBF'   -> 2
-      | c >= '\x4DC0' && c <= '\x4DFF'   -> 1
-      | c >= '\x4E00' && c <= '\xA4C6'   -> 2
-      | c >= '\xA4D0' && c <= '\xA95F'   -> 1
-      | c >= '\xA960' && c <= '\xA97C'   -> 2
-      | c >= '\xA980' && c <= '\xABF9'   -> 1
-      | c >= '\xAC00' && c <= '\xD7FB'   -> 2
-      | c >= '\xD800' && c <= '\xDFFF'   -> 1
-      | c >= '\xE000' && c <= '\xF8FF'   -> 1
-      | -- ambiguous
-        c >= '\xF900' && c <= '\xFAFF'   -> 2
-      | c >= '\xFB00' && c <= '\xFDFD'   -> 1
-      | c >= '\xFE00' && c <= '\xFE0F'   -> 1
-      | -- ambiguous
-        c >= '\xFE10' && c <= '\xFE19'   -> 2
-      | c >= '\xFE20' && c <= '\xFE26'   -> 1
-      | c >= '\xFE30' && c <= '\xFE6B'   -> 2
-      | c >= '\xFE70' && c <= '\xFEFF'   -> 1
-      | c >= '\xFF01' && c <= '\xFF60'   -> 2
-      | c >= '\xFF61' && c <= '\x16A38'  -> 1
-      | c >= '\x1B000' && c <= '\x1B001' -> 2
-      | c >= '\x1D000' && c <= '\x1F1FF' -> 1
-      | c >= '\x1F200' && c <= '\x1F251' -> 2
-      | c >= '\x1F300' && c <= '\x1F773' -> 1
-      | c >= '\x20000' && c <= '\x3FFFD' -> 2
-      | otherwise                        -> 1
-
-
 checkForUpdates :: (MonadReader Settings m, MonadCatch m, MonadLogger m, MonadThrow m, MonadIO m, MonadFail m, MonadLogger m)
                => GHCupDownloads
                -> PlatformRequest
@@ -1627,13 +1461,6 @@ checkForUpdates dls pfreq = do
        $ $(logWarn)
            [i|New Cabal version available: #{prettyVer l}. To upgrade, run 'ghcup install cabal #{prettyVer l}'|]

-  forM_ (getLatest dls HLS) $ \l -> do
-    mcabal_ver <- latestInstalled HLS
-    forM mcabal_ver $ \cabal_ver ->
-      when (l > cabal_ver)
-        $ $(logWarn)
-            [i|New HLS version available: #{prettyVer l}. To upgrade, run 'ghcup install hls #{prettyVer l}'|]
-
 where
  latestInstalled tool = (fmap lVer . lastMay)
    <$> (listVersions dls (Just tool) (Just ListInstalled) pfreq)
@@ -1649,4 +1476,20 @@ GHCup cache directory: #{toFilePath diCacheDir}
 Architecture: #{prettyArch diArch}
 Platform: #{prettyPlatform diPlatform}
 Version: #{describe_result}|]
+ where
+  prettyArch :: Architecture -> String
+  prettyArch A_64 = "amd64"
+  prettyArch A_32 = "i386"
+  prettyArch A_PowerPC = "PowerPC"
+  prettyArch A_PowerPC64 = "PowerPC64"
+  prettyArch A_Sparc = "Sparc"
+  prettyArch A_Sparc64 = "Sparc64"
+  prettyArch A_ARM = "ARM"
+  prettyArch A_ARM64 = "ARM64"
+
+  prettyPlatform :: PlatformResult -> String
+  prettyPlatform PlatformResult { _platform = plat, _distroVersion = Just v' }
+    = show plat <> ", " <> show v'
+  prettyPlatform PlatformResult { _platform = plat, _distroVersion = Nothing }
+    = show plat

--- a/42
+++ b/42
@@ -59,7 +59,7 @@ _done() {
 download_ghcup() {
 	_plat="$(uname -s)"
 	_arch=$(uname -m)
-	_ghver="0.1.11"
+	_ghver="0.1.10"
 	_base_url="https://downloads.haskell.org/~ghcup"

    case "${_plat}" in
@@ -188,30 +188,7 @@ printf "\\033[0;35m%s\\033[0m\\n" ""
 printf "\\033[0;35m%s\\033[0m\\n" "Installation done!"
 printf "\\033[0;35m%s\\033[0m\\n" ""

-
 if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
-	printf "\\033[0;35m%s\\033[0m\\n" "Do you want to install haskell-language-server (HLS) now?"
-	printf "\\033[0;35m%s\\033[0m\\n" "HLS is a language-server that provides IDE-like functionality"
-	printf "\\033[0;35m%s\\033[0m\\n" "and can integrate with different editors, such as Vim, Emacs, VS Code, Atom, ..."
-	printf "\\033[0;35m%s\\033[0m\\n" "Also see https://github.com/haskell/haskell-language-server/blob/master/README.md"
-	printf "\\033[0;35m%s\\033[0m\\n" ""
-	printf "\\033[0;35m%s\\033[0m\\n" "Answer with YES or NO and press ENTER."
-	printf "\\033[0;35m%s\\033[0m\\n" ""
-
-	while true; do
-		read -r hls_answer </dev/tty
-
-		case $hls_answer in
-			[Yy]*)
-				eghcup --cache install hls
-				break ;;
-			[Nn]*)
-				break ;;
-			*)
-				echo "Please type YES or NO and press enter.";;
-		esac
-	done
-
    echo "In order to run ghc and cabal, you need to adjust your PATH variable."
    echo "You may want to source '$GHCUP_DIR/env' in your shell"
    echo "configuration to do so (e.g. ~/.bashrc)."
@@ -258,23 +235,10 @@ if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
 						if ! grep -q "ghcup-env" "${GHCUP_PROFILE_FILE}" ; then
 							echo "# ghcup-env" >> "${GHCUP_PROFILE_FILE}"
 							echo "set -q GHCUP_INSTALL_BASE_PREFIX[1]; or set GHCUP_INSTALL_BASE_PREFIX \$HOME" >> "${GHCUP_PROFILE_FILE}"
-							echo "test -f $GHCUP_DIR/env ; and set -gx PATH \$HOME/.cabal/bin $GHCUP_BIN \$PATH" >> "${GHCUP_PROFILE_FILE}"
+							echo "test -f $GHCUP_DIR/env ; and set -gx PATH \$HOME/.cabal/bin $GHCUP_BIN/bin \$PATH" >> "${GHCUP_PROFILE_FILE}"
 						fi
 						break ;;
-					bash)
-						if ! grep -q "ghcup-env" "${GHCUP_PROFILE_FILE}" ; then
-							echo "[ -f \"${GHCUP_DIR}/env\" ] && source \"${GHCUP_DIR}/env\" # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
-						fi
-						case "$(uname -s)" in
-							"Darwin"|"darwin")
-								if ! grep -q "ghcup-env" "${HOME}/.bash_profile" ; then
-									echo "[[ -f ~/.bashrc ]] && source ~/.bashrc # ghcup-env" >> "${HOME}/.bash_profile"
-								fi
-								;;
-						esac
-						break ;;
-
-					zsh)
+					*)
 						if ! grep -q "ghcup-env" "${GHCUP_PROFILE_FILE}" ; then
 							echo "[ -f \"${GHCUP_DIR}/env\" ] && source \"${GHCUP_DIR}/env\" # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
 						fi
--- a/cabal.ghc884.project
+++ b/cabal.ghc884.project
@@ -1,52 +0,0 @@
-- Generated by stackage-to-hackage
-
-index-state: 2020-10-05T20:10:01Z
-
-with-compiler: ghc-8.8.4
-
-packages:
-    ./
-  , 3rdparty/lzma/
-  , 3rdparty/lzma-clib/
-  , 3rdparty/zlib/
-
-source-repository-package
-    type: git
-    location: https://github.com/haskus/packages.git
-    tag: 80a1c5fc07f7226c424250ec17f674cd4d618f42
-    subdir: haskus-utils-types
-
-source-repository-package
-    type: git
-    location: https://github.com/hasufell/hpath.git
-    tag: bf6d28cf989b70286e12fecc183d5bbf5454a1a2
-    subdir: hpath-io
-
-source-repository-package
-    type: git
-    location: https://github.com/hasufell/hpath.git
-    tag: bf6d28cf989b70286e12fecc183d5bbf5454a1a2
-    subdir: hpath-directory
-
-source-repository-package
-    type: git
-    location: https://github.com/hasufell/text-conversions.git
-    tag: 9abf0e5e5664a3178367597c32db19880477a53c
-
-allow-older: *
-allow-newer: *
-
-package lzma
-    ghc-options: -O2
-
-package lzma-clib
-    ghc-options: -O2
-
-package zlib
-    ghc-options: -O2
-
-package ghcup
-    ghc-options: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16
-
-package streamly
-    ghc-options: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16
--- a/cabal.ghc884.project.freeze
+++ b/cabal.ghc884.project.freeze
--- a/cabal.project
+++ b/cabal.project
@@ -8,18 +8,6 @@ source-repository-package
    tag: 80a1c5fc07f7226c424250ec17f674cd4d618f42
    subdir: haskus-utils-types

-source-repository-package
-    type: git
-    location: https://github.com/hasufell/hpath.git
-    tag: bf6d28cf989b70286e12fecc183d5bbf5454a1a2
-    subdir: hpath-io
-
-source-repository-package
-    type: git
-    location: https://github.com/hasufell/hpath.git
-    tag: bf6d28cf989b70286e12fecc183d5bbf5454a1a2
-    subdir: hpath-directory
-
 optimization: 2

 package streamly
@@ -31,6 +19,6 @@ package ghcup
 constraints: http-io-streams -brotli

 package libarchive
-  flags: -system-libarchive
+  flags: +static

 allow-newer: base, ghc-prim, template-haskell
--- a/ghcup-0.0.2.yaml
+++ b/ghcup-0.0.2.yaml
@@ -1159,7 +1159,7 @@ ghcupDownloads:
          Linux_Alpine:
            unknown_versioning:
              dlUri: https://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-x86_64-alpine3.10-linux-integer-simple.tar.xz
-              dlSubdir: ghc-8.10.2-x86_64-unknown-linux
+              dlSubdir: ghc-8.10.2
              dlHash: 14d09a508f2a3a11875c140be8e6c5f6982ac5cd448f089ca10b7adc955fec76
          Linux_AmazonLinux:
            unknown_versioning: *ghc-8102-64-centos
@@ -1197,6 +1197,10 @@ ghcupDownloads:
    2.4.1.0:
      viTags: []
      viChangeLog: https://downloads.haskell.org/~cabal/cabal-install-2.4.1.0/changelog
+      viSourceDL:
+        dlUri: https://github.com/haskell/cabal/archive/cabal-install-v2.4.1.0.tar.gz
+        dlSubdir: cabal-cabal-install-v2.4.1.0/cabal-install
+        dlHash: 61eb64a5addafca026aff9277291f4643fe07e83886f76d059d42c734fed829c
      viArch:
        A_64:
          Linux_Alpine:
@@ -1228,6 +1232,10 @@ ghcupDownloads:
    3.0.0.0:
      viTags: []
      viChangeLog: https://downloads.haskell.org/~cabal/cabal-install-3.0.0.0/changelog
+      viSourceDL:
+        dlUri: https://github.com/haskell/cabal/archive/cabal-install-v3.0.0.0.tar.gz
+        dlSubdir: cabal-cabal-install-v3.0.0.0/cabal-install
+        dlHash: c0b26817a7b7c2907e45cb38235ce1157e732211880f62e92eaff4066202e674
      viArch:
        A_64:
          Linux_Alpine:
@@ -1260,6 +1268,10 @@ ghcupDownloads:
      - Recommended
      - Latest
      viChangeLog: https://downloads.haskell.org/~cabal/cabal-install-3.2.0.0/changelog
+      viSourceDL:
+        dlUri: https://github.com/haskell/cabal/archive/cabal-install-v3.2.0.0.tar.gz
+        dlSubdir: cabal-cabal-install-v3.2.0.0/cabal-install
+        dlHash: 77202358bdf0b481c09326268ce18880df14194c5aaa840f99510bdd1a124b75
      viArch:
        A_64:
          Linux_Alpine:
@@ -1287,32 +1299,31 @@ ghcupDownloads:
            unknown_versioning:
              dlUri: https://downloads.haskell.org/~cabal/cabal-install-3.2.0.0/cabal-install-3.2.0.0-i386-unknown-linux.tar.xz
              dlHash: 2b3ac28549916de5f3379241797eaf60e84b6c001f2abbe73d9fadbbaf768e93
-    3.4.0.0-rc3:
+    3.4.0.0-rc1:
      viTags:
      - Prerelease
-      viChangeLog: https://github.com/haskell/cabal/blob/master/release-notes/cabal-install-3.4.0.0.md
      viArch:
        A_64:
          Linux_Ubuntu:
-            unknown_versioning: &cabal-3400rc3-ubuntu
-              dlUri: https://oleg.fi/cabal-install-3.4.0.0-rc3/cabal-install-3.4.0.0-x86_64-ubuntu-16.04.tar.xz
-              dlHash: a97f0362b8cdc78ba4a7891f8b288082dc11e20c64b1b3c8e6c2bd3766446d10
+            unknown_versioning: &cabal-3400rc1-ubuntu
+              dlUri: http://oleg.fi/cabal-install-3.4.0.0-rc1/cabal-install-3.4.0.0-x86_64-ubuntu-16.04.tar.xz
+              dlHash: 4a693eeacf91993d639b0296a366af7aec6899992352595835f7671e5adef4c6
          Linux_Alpine:
            unknown_versioning:
-              dlUri: https://oleg.fi/cabal-install-3.4.0.0-rc3/cabal-install-3.4.0.0-x86_64-alpine-3.11.6-static-noofd.tar.xz
-              dlHash: a82c7dc7e46da823f6a982465b9b29e0640a5ce2e5b573d3dd55a47e20740305
+              dlUri: http://oleg.fi/cabal-install-3.4.0.0-rc1/cabal-install-3.4.0.0-x86_64-alpine-3.11.6-static-noofd.tar.xz
+              dlHash: 143160e1768c9c21bad613f720a37aad34051f41fb3473f5f28c030f9ccb7aca
          Linux_UnknownLinux:
-            unknown_versioning: *cabal-3400rc3-ubuntu
+            unknown_versioning: *cabal-3400rc1-ubuntu
          Darwin:
            unknown_versioning:
-              dlUri: https://oleg.fi/cabal-install-3.4.0.0-rc3/cabal-install-3.4.0.0-x86_64-darwin-sierra.tar.xz
-              dlHash: 4553eaea3031c09ab5156af8d4a62bf1ecbbea2c3b57a876f267cbf4b5a15658
+              dlUri: http://oleg.fi/cabal-install-3.4.0.0-rc1/cabal-install-3.4.0.0-x86_64-darwin-sierra.tar.xz
+              dlHash: 98e362a57c3b5c1a76f75ede2c2a7c29439902a3e21c3e4f8dcd701e276b164f
          FreeBSD:
            unknown_versioning:
-              dlUri: https://oleg.fi/cabal-install-3.4.0.0-rc3/cabal-install-3.4.0.0-x86_64-freebsd-12.1-release.tar.xz
-              dlHash: 44e25e0b0d15361acb369f4bf2206a39d2432a08fb922cc40a9b8a045d0a3a6f
+              dlUri: http://oleg.fi/cabal-install-3.4.0.0-rc1/cabal-install-3.4.0.0-amd64-freebsd-12.1-release.tar.xz
+              dlHash: 0035cc5d35db15d254037a9448697e1daff0a6d21b12c8d43d72522c82cc7319
  GHCup:
-    0.1.11:
+    0.1.10:
      viTags:
      - Recommended
      - Latest
@@ -1322,22 +1333,22 @@ ghcupDownloads:
        A_64:
          Linux_UnknownLinux:
            unknown_versioning: &ghcup-64
-              dlUri: https://downloads.haskell.org/~ghcup/0.1.11/x86_64-linux-ghcup-0.1.11
-              dlHash: 99d97c9a1dce76892001e5cffd50cc23bf804f2282998c546d1b965aa2179699
+              dlUri: https://downloads.haskell.org/~ghcup/0.1.10/x86_64-linux-ghcup-0.1.10
+              dlHash: 87661bd127f857b990174ac8d96ad4bd629865306b2058c8cc64d3b36ed317c9
          Darwin:
            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghcup/0.1.11/x86_64-apple-darwin-ghcup-0.1.11
-              dlHash: 4b91dcd9bfdc40534156b8fadea3f317b3c44af1255169895f4911a221f819c6
+              dlUri: https://downloads.haskell.org/~ghcup/0.1.10/x86_64-apple-darwin-ghcup-0.1.10
+              dlHash: e71666fde6a7700f307e1a55720859d3a042fe27c68ff32f3d1181f4436b7391
          FreeBSD:
            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghcup/0.1.11/x86_64-portbld-freebsd-ghcup-0.1.11
-              dlHash: 6f04ce98d3f3eb9299ce74f8264aa956f0dc38a64a3bd12ee048b7f146e9e1b4
+              dlUri: https://downloads.haskell.org/~ghcup/0.1.10/x86_64-portbld-freebsd-ghcup-0.1.10
+              dlHash: b5ef1b0454f1a9c5a62b378c1e9c48c2b794d64a22086adf482b064dfb34e68d
          Linux_Alpine:
            unknown_versioning: *ghcup-64
        A_32:
          Linux_UnknownLinux:
            unknown_versioning: &ghcup-32
-              dlUri: https://downloads.haskell.org/~ghcup/0.1.11/i386-linux-ghcup-0.1.11
-              dlHash: ec339e4c2b8b4d502f66a03c0d3f112cb68cd922dd3c4a6f66323628cf6a76c2
+              dlUri: https://downloads.haskell.org/~ghcup/0.1.10/i386-linux-ghcup-0.1.10
+              dlHash: 50ac43199b64bc0724400b0a3db674bef3ec53cf6d41acc04a2c4ca8557e534f
          Linux_Alpine:
            unknown_versioning: *ghcup-32
--- a/ghcup-0.0.3.yaml
+++ b/ghcup-0.0.3.yaml
--- a/ghcup.cabal
+++ b/ghcup.cabal
@@ -1,6 +1,6 @@
 cabal-version:      3.0
 name:               ghcup
-version:            0.1.12
+version:            0.1.10
 synopsis:           ghc toolchain installer as an exe/library
 description:
  A rewrite of the shell script ghcup, for providing
@@ -81,9 +81,6 @@ common containers
 common cryptohash-sha256
  build-depends: cryptohash-sha256 >= 0.11.101.0

-common generic-arbitrary
-  build-depends: generic-arbitrary >=0.1.0
-
 common generics-sop
  build-depends: generics-sop >=0.5

@@ -97,13 +94,13 @@ common hpath
  build-depends: hpath >=0.11

 common hpath-directory
-  build-depends: hpath-directory >=0.14.1
+  build-depends: hpath-directory >=0.14

 common hpath-filepath
  build-depends: hpath-filepath >=0.10.3

 common hpath-io
-  build-depends: hpath-io >=0.14.1
+  build-depends: hpath-io >=0.14

 common hpath-posix
  build-depends: hpath-posix >=0.13.2
@@ -111,17 +108,11 @@ common hpath-posix
 common http-io-streams
  build-depends: http-io-streams >=0.1.2.0

-common hspec
-  build-depends: hspec >=2.7.4
-
-common hspec-golden-aeson
-  build-depends: hspec-golden-aeson >=0.7
-
 common io-streams
  build-depends: io-streams >=1.5

 common libarchive
-  build-depends: libarchive >= 3.0.0.0
+  build-depends: libarchive >= 2.2.5.0

 common lzma
  build-depends: lzma >=0.0.0.3
@@ -180,6 +171,9 @@ common strict-base
 common string-interpolate
  build-depends: string-interpolate >=0.2.0.0

+common table-layout
+  build-depends: table-layout >=0.8
+
 common template-haskell
  build-depends: template-haskell >=2.7

@@ -201,12 +195,6 @@ common transformers
 common os-release
  build-depends: os-release >=1.0.0

-common QuickCheck
-  build-depends: QuickCheck >=2.14.1
-
-common quickcheck-arbitrary-adt
-  build-depends: quickcheck-arbitrary-adt >=0.3.1.0
-
 common unix
  build-depends: unix >=2.7

@@ -252,6 +240,8 @@ common config
    PackageImports
    RecordWildCards
    ScopedTypeVariables
+    Strict
+    StrictData
    TupleSections

 library
@@ -331,10 +321,6 @@ library
    GHCup.Utils.Version.QQ
    GHCup.Version

-  default-extensions:
-    Strict
-    StrictData
-
  -- other-modules:
  -- other-extensions:
  hs-source-dirs:  lib
@@ -375,8 +361,10 @@ executable ghcup
    , safe
    , safe-exceptions
    , string-interpolate
+    , table-layout
    , template-haskell
    , text
+    , unix-bytestring
    , uri-bytestring
    , utf8-string
    , versions
@@ -390,10 +378,6 @@ executable ghcup
  hs-source-dirs:   app/ghcup
  default-language: Haskell2010

-  default-extensions:
-    Strict
-    StrictData
-
  if flag(internal-downloader)
    cpp-options:     -DINTERNAL_DOWNLOADER

@@ -429,6 +413,7 @@ executable ghcup-gen
    , resourcet
    , safe-exceptions
    , string-interpolate
+    , table-layout
    , text
    , transformers
    , uri-bytestring
@@ -447,25 +432,8 @@ executable ghcup-gen
  default-language: Haskell2010

 test-suite ghcup-test
-  import:
-    config
-    , base
-    , bytestring
-    , containers
-    , QuickCheck
-    , generic-arbitrary
-    , hpath
-    , hspec
-    , hspec-golden-aeson
-    , quickcheck-arbitrary-adt
-    , text
-    , uri-bytestring
-    , versions
+  default-language: Haskell2010
  type:             exitcode-stdio-1.0
-  build-depends:    ghcup
  hs-source-dirs:   test
-  main-is:          Main.hs
-  other-modules:
-                    GHCup.ArbitraryTypes
-                    GHCup.Types.JSONSpec
-                    Spec
+  main-is:          MyLibTest.hs
+  build-depends:    base >=4.12.0.0
--- a/golden/GHCupInfo.json
+++ b/golden/GHCupInfo.json
--- a/hie.yaml
+++ b/hie.yaml
@@ -1,19 +1,4 @@
 cradle:
  cabal:
-    - path: "./lib"
-      component: "lib:ghcup"
-
-    - path: "./app/ghcup/Main.hs"
-      component: "ghcup:exe:ghcup"
-
-    - path: "./app/ghcup/BrickMain.hs"
-      component: "ghcup:exe:ghcup"
-
-    - path: "./app/ghcup-gen/Main.hs"
-      component: "ghcup:exe:ghcup-gen"
-
-    - path: "./app/ghcup-gen/Validate.hs"
-      component: "ghcup:exe:ghcup-gen"
-
-    - path: "./test"
-      component: "ghcup:test:ghcup-test"
+    - path: "."
+      component: "ghcup:lib:ghcup"
--- a/lib/GHCup.hs
+++ b/lib/GHCup.hs
@@ -75,12 +75,9 @@ import           Prelude                 hiding ( abs
 import           Safe                    hiding ( at )
 import           System.IO.Error
 import           System.Posix.Env.ByteString    ( getEnvironment )
-import           System.Posix.FilePath          ( getSearchPath, takeExtension )
+import           System.Posix.FilePath          ( getSearchPath )
 import           System.Posix.Files.ByteString
-import           Text.Regex.Posix

-import qualified Crypto.Hash.SHA256            as SHA256
-import qualified Data.ByteString.Base16        as B16
 import qualified Data.ByteString               as B
 import qualified Data.ByteString.Lazy          as BL
 import qualified Data.Map.Strict               as Map
@@ -122,7 +119,7 @@ installGHCBindist :: ( MonadFail m
                        ]
                       m
                       ()
-installGHCBindist dlinfo ver pfreq = do
+installGHCBindist dlinfo ver (PlatformRequest {..}) = do
  let tver = (mkTVer ver)
  lift $ $(logDebug) [i|Requested to install GHC with #{ver}|]
  whenM (lift $ ghcInstalled tver)
@@ -131,79 +128,41 @@ installGHCBindist dlinfo ver pfreq = do
  -- download (or use cached version)
  dl                           <- liftE $ downloadCached dlinfo Nothing

-  -- prepare paths
-  ghcdir <- lift $ ghcupGHCDir tver
-
-  liftE $ installPackedGHC dl (view dlSubdir dlinfo) ghcdir ver pfreq
-
-  liftE $ postGHCInstall tver
-
-- | Install a packed GHC distribution. This only deals with unpacking and the GHC
-- build system and nothing else.
-installPackedGHC :: ( MonadMask m
-                    , MonadCatch m
-                    , MonadReader Settings m
-                    , MonadThrow m
-                    , MonadLogger m
-                    , MonadIO m
-                    )
-                 => Path Abs          -- ^ Path to the packed GHC bindist
-                 -> Maybe TarDir      -- ^ Subdir of the archive
-                 -> Path Abs          -- ^ Path to install to
-                 -> Version           -- ^ The GHC version
-                 -> PlatformRequest
-                 -> Excepts
-                      '[ BuildFailed
-                       , UnknownArchive
-                       , TarDirDoesNotExist
-#if !defined(TAR)
-                       , ArchiveResult
-#endif
-                       ] m ()
-installPackedGHC dl msubdir inst ver pfreq@(PlatformRequest {..}) = do
  -- unpack
-  tmpUnpack <- lift mkGhcupTmpDir
+  tmpUnpack                    <- lift mkGhcupTmpDir
  liftE $ unpackToDir tmpUnpack dl
  void $ liftIO $ darwinNotarization _rPlatform tmpUnpack

+  -- prepare paths
+  ghcdir <- lift $ ghcupGHCDir tver
+
  -- the subdir of the archive where we do the work
-  workdir <- maybe (pure tmpUnpack)
-                   (liftE . intoSubdir tmpUnpack)
-                   (msubdir)
+  workdir <- maybe (pure tmpUnpack) (liftE . intoSubdir tmpUnpack) (view dlSubdir dlinfo)

-  liftE $ runBuildAction tmpUnpack
-                         (Just inst)
-                         (installUnpackedGHC workdir inst ver pfreq)
+  liftE $ runBuildAction tmpUnpack (Just ghcdir) (installGHC' workdir ghcdir)

+  liftE $ postGHCInstall tver

-- | Install an unpacked GHC distribution. This only deals with the GHC
-- build system and nothing else.
-installUnpackedGHC :: ( MonadReader Settings m
-                      , MonadThrow m
-                      , MonadLogger m
-                      , MonadIO m
-                      )
-                   => Path Abs      -- ^ Path to the unpacked GHC bindist (where the configure script resides)
-                   -> Path Abs      -- ^ Path to install to
-                   -> Version       -- ^ The GHC version
-                   -> PlatformRequest
-                   -> Excepts '[ProcessError] m ()
-installUnpackedGHC path inst ver (PlatformRequest {..}) = do
-  lift $ $(logInfo) "Installing GHC (this may take a while)"
-  lEM $ execLogged "./configure"
-                   False
-                   (["--prefix=" <> toFilePath inst] ++ alpineArgs)
-                   [rel|ghc-configure|]
-                   (Just path)
-                   Nothing
-  lEM $ make ["install"] (Just path)
-  pure ()
 where
+  -- | Install an unpacked GHC distribution. This only deals with the GHC build system and nothing else.
+  installGHC' :: (MonadReader Settings m, MonadThrow m, MonadLogger m, MonadIO m)
+              => Path Abs      -- ^ Path to the unpacked GHC bindist (where the configure script resides)
+              -> Path Abs      -- ^ Path to install to
+              -> Excepts '[ProcessError] m ()
+  installGHC' path inst = do
+    lift $ $(logInfo) "Installing GHC (this may take a while)"
+    lEM $ execLogged "./configure"
+                              False
+                              (["--prefix=" <> toFilePath inst] ++ alpineArgs)
+                              (Just path)
+                              Nothing
+    lEM $ make ["install"] (Just path)
+    pure ()
+
  alpineArgs
-    | ver >= [vver|8.2.2|], Linux Alpine <- _rPlatform
-    = ["--disable-ld-override"]
-    | otherwise
-    = []
+    | ver >= [vver|8.2.2|]
+    , Linux Alpine <- _rPlatform = ["--disable-ld-override"]
+    | otherwise = []


 -- | Installs GHC into @~\/.ghcup\/ghc/\<ver\>@ and places the
@@ -313,7 +272,7 @@ installCabalBindist dlinfo ver (PlatformRequest {..}) = do
  installCabal' path inst = do
    lift $ $(logInfo) "Installing cabal"
    let cabalFile = [rel|cabal|]
-    liftIO $ createDirRecursive' inst
+    liftIO $ createDirRecursive newDirPerms inst
    destFileName <- lift $ parseRel (toFilePath cabalFile <> "-" <> verToBS ver)
    let destPath = inst </> destFileName
    handleIO (throwE . CopyError . show) $ liftIO $ copyFile
@@ -357,130 +316,6 @@ installCabalBin bDls ver pfreq = do
  installCabalBindist dlinfo ver pfreq


-- | Like 'installHLSBin, except takes the 'DownloadInfo' as
-- argument instead of looking it up from 'GHCupDownloads'.
-installHLSBindist :: ( MonadMask m
-                     , MonadCatch m
-                     , MonadReader Settings m
-                     , MonadLogger m
-                     , MonadResource m
-                     , MonadIO m
-                     , MonadFail m
-                     )
-                  => DownloadInfo
-                  -> Version
-                  -> PlatformRequest
-                  -> Excepts
-                       '[ AlreadyInstalled
-                        , CopyError
-                        , DigestError
-                        , DownloadFailed
-                        , NoDownload
-                        , NotInstalled
-                        , UnknownArchive
-                        , TarDirDoesNotExist
-#if !defined(TAR)
-                        , ArchiveResult
-#endif
-                        ]
-                       m
-                       ()
-installHLSBindist dlinfo ver (PlatformRequest {..}) = do
-  lift $ $(logDebug) [i|Requested to install hls version #{ver}|]
-
-  Settings {dirs = Dirs {..}} <- lift ask
-
-  whenM (lift (hlsInstalled ver))
-    $ (throwE $ AlreadyInstalled HLS ver)
-
-  -- download (or use cached version)
-  dl                           <- liftE $ downloadCached dlinfo Nothing
-
-  -- unpack
-  tmpUnpack                    <- lift withGHCupTmpDir
-  liftE $ unpackToDir tmpUnpack dl
-  void $ liftIO $ darwinNotarization _rPlatform tmpUnpack
-
-  -- the subdir of the archive where we do the work
-  workdir <- maybe (pure tmpUnpack) (liftE . intoSubdir tmpUnpack) (view dlSubdir dlinfo)
-
-  liftE $ installHLS' workdir binDir
-
-  -- create symlink if this is the latest version
-  hlsVers <- lift $ fmap rights $ getInstalledHLSs
-  let lInstHLS = headMay . reverse . sort $ hlsVers
-  when (maybe True (ver >=) lInstHLS) $ liftE $ setHLS ver
-
-  pure ()
-
- where
-  -- | Install an unpacked hls distribution.
-  installHLS' :: (MonadFail m, MonadLogger m, MonadCatch m, MonadIO m)
-                => Path Abs      -- ^ Path to the unpacked hls bindist (where the executable resides)
-                -> Path Abs      -- ^ Path to install to
-                -> Excepts '[CopyError] m ()
-  installHLS' path inst = do
-    lift $ $(logInfo) "Installing HLS"
-    liftIO $ createDirRecursive' inst
-
-    -- install haskell-language-server-<ghcver>
-    bins@(_:_) <- liftIO $ findFiles
-      path
-      (makeRegexOpts compExtended
-                     execBlank
-                     ([s|^haskell-language-server-[0-9].*$|] :: ByteString)
-      )
-    forM_ bins $ \f -> do
-      toF <- parseRel (toFilePath f <> "~" <> verToBS ver)
-      handleIO (throwE . CopyError . show) $ liftIO $ copyFile
-        (path </> f)
-        (inst </> toF)
-        Overwrite
-      lift $ chmod_777 (inst </> toF)
-
-    -- install haskell-language-server-wrapper
-    let wrapper = [rel|haskell-language-server-wrapper|]
-    toF <- parseRel (toFilePath wrapper <> "-" <> verToBS ver)
-    handleIO (throwE . CopyError . show) $ liftIO $ copyFile
-      (path </> wrapper)
-      (inst </> toF)
-      Overwrite
-    lift $ chmod_777 (inst </> toF)
-
-
-- | Installs hls binaries @haskell-language-server-\<ghcver\>@
-- into @~\/.ghcup\/bin/@, as well as @haskell-languager-server-wrapper@.
-installHLSBin :: ( MonadMask m
-                 , MonadCatch m
-                 , MonadReader Settings m
-                 , MonadLogger m
-                 , MonadResource m
-                 , MonadIO m
-                 , MonadFail m
-                 )
-              => GHCupDownloads
-              -> Version
-              -> PlatformRequest
-              -> Excepts
-                   '[ AlreadyInstalled
-                    , CopyError
-                    , DigestError
-                    , DownloadFailed
-                    , NoDownload
-                    , NotInstalled
-                    , UnknownArchive
-                    , TarDirDoesNotExist
-#if !defined(TAR)
-                    , ArchiveResult
-#endif
-                    ]
-                   m
-                   ()
-installHLSBin bDls ver pfreq = do
-  dlinfo <- lE $ getDownloadInfo HLS ver pfreq bDls
-  installHLSBindist dlinfo ver pfreq
-
-


    ---------------------
@@ -516,7 +351,7 @@ setGHC ver sghc = do

  -- symlink destination
  Settings { dirs = Dirs {..} } <- lift ask
-  liftIO $ createDirRecursive' binDir
+  liftIO $ hideError AlreadyExists $ createDirRecursive newDirPerms binDir

  -- first delete the old symlinks (this fixes compatibility issues
  -- with old ghcup)
@@ -588,7 +423,7 @@ setCabal ver = do

  -- symlink destination
  Settings {dirs = Dirs {..}} <- lift ask
-  liftIO $ createDirRecursive' binDir
+  liftIO $ hideError AlreadyExists $ createDirRecursive newDirPerms binDir

  whenM (liftIO $ fmap not $ doesFileExist (binDir </> targetFile))
    $ throwE
@@ -611,55 +446,6 @@ setCabal ver = do



-- | Set the haskell-language-server symlinks.
-setHLS :: ( MonadCatch m
-          , MonadReader Settings m
-          , MonadLogger m
-          , MonadThrow m
-          , MonadFail m
-          , MonadIO m
-          )
-       => Version
-       -> Excepts '[NotInstalled] m ()
-setHLS ver = do
-  Settings { dirs = Dirs {..} } <- lift ask
-  liftIO $ createDirRecursive' binDir
-
-  -- Delete old symlinks, since these might have different ghc versions than the
-  -- selected version, so we could end up with stray or incorrect symlinks.
-  oldSyms <- lift hlsSymlinks
-  forM_ oldSyms $ \f -> do
-    lift $ $(logDebug) [i|rm #{toFilePath (binDir </> f)}|]
-    liftIO $ deleteFile (binDir </> f)
-
-  -- set haskell-language-server-<ghcver> symlinks
-  bins <- lift $ hlsServerBinaries ver
-  when (bins == []) $ throwE $ NotInstalled HLS (prettyVer ver)
-
-  forM_ bins $ \f -> do
-    let destL = toFilePath f
-    target <- parseRel . head . B.split _tilde . toFilePath $ f
-
-    lift $ $(logDebug) [i|rm -f #{toFilePath (binDir </> target)}|]
-    liftIO $ hideError doesNotExistErrorType $ deleteFile (binDir </> target)
-
-    lift $ $(logDebug) [i|ln -s #{destL} #{toFilePath (binDir </> target)}|]
-    liftIO $ createSymlink (binDir </> target) destL
-
-  -- set haskell-language-server-wrapper symlink
-  let destL = "haskell-language-server-wrapper-" <> verToBS ver
-  let wrapper = binDir </> [rel|haskell-language-server-wrapper|]
-
-  lift $ $(logDebug) [i|rm -f #{toFilePath wrapper}|]
-  liftIO $ hideError doesNotExistErrorType $ deleteFile wrapper
-
-  lift $ $(logDebug) [i|ln -s #{destL} #{toFilePath wrapper}|]
-  liftIO $ createSymlink wrapper destL
-
-  pure ()
-
-
-


    ------------------
@@ -684,7 +470,6 @@ data ListResult = ListResult
  , fromSrc    :: Bool -- ^ compiled from source
  , lStray     :: Bool -- ^ not in download info
  , lNoBindist :: Bool -- ^ whether the version is available for this platform/arch
-  , hlsPowered :: Bool
  }
  deriving (Eq, Ord, Show)

@@ -718,25 +503,22 @@ listVersions av lt criteria pfreq = do
      lr <- filter' <$> forM (Map.toList avTools) (toListResult t)

      case t of
+        -- append stray GHCs
        GHC -> do
          slr <- strayGHCs avTools
          pure $ (sort (slr ++ lr))
        Cabal -> do
          slr <- strayCabals avTools
          pure $ (sort (slr ++ lr))
-        HLS -> do
-          slr <- strayHLS avTools
-          pure $ (sort (slr ++ lr))
-        GHCup -> pure lr
+        _ -> pure lr
    Nothing -> do
      ghcvers   <- listVersions av (Just GHC) criteria pfreq
      cabalvers <- listVersions av (Just Cabal) criteria pfreq
-      hlsvers   <- listVersions av (Just HLS) criteria pfreq
      ghcupvers <- listVersions av (Just GHCup) criteria pfreq
-      pure (ghcvers <> cabalvers <> hlsvers <> ghcupvers)
+      pure (ghcvers <> cabalvers <> ghcupvers)

 where
-  strayGHCs :: (MonadCatch m, MonadReader Settings m, MonadThrow m, MonadLogger m, MonadIO m)
+  strayGHCs :: (MonadReader Settings m, MonadThrow m, MonadLogger m, MonadIO m)
            => Map.Map Version [Tag]
            -> m [ListResult]
  strayGHCs avTools = do
@@ -748,7 +530,6 @@ listVersions av lt criteria pfreq = do
          Nothing -> do
            lSet    <- fmap (maybe False (\(GHCTargetVersion _ v ) -> v == _tvVersion)) $ ghcSet Nothing
            fromSrc <- ghcSrcInstalled tver
-            hlsPowered <- fmap (elem _tvVersion) $ hlsGHCVersions
            pure $ Just $ ListResult
              { lTool      = GHC
              , lVer       = _tvVersion
@@ -762,7 +543,6 @@ listVersions av lt criteria pfreq = do
      Right tver@GHCTargetVersion{ .. } -> do
        lSet    <- fmap (maybe False (\(GHCTargetVersion _ v ) -> v == _tvVersion)) $ ghcSet _tvTarget
        fromSrc <- ghcSrcInstalled tver
-        hlsPowered <- fmap (elem _tvVersion) $ hlsGHCVersions
        pure $ Just $ ListResult
          { lTool      = GHC
          , lVer       = _tvVersion
@@ -798,35 +578,6 @@ listVersions av lt criteria pfreq = do
              , lStray     = maybe True (const False) (Map.lookup ver avTools)
              , lNoBindist = False
              , fromSrc    = False -- actually, we don't know :>
-              , hlsPowered = False
-              , ..
-              }
-      Left e -> do
-        $(logWarn)
-          [i|Could not parse version of stray directory #{toFilePath e}|]
-        pure Nothing
-
-  strayHLS :: (MonadReader Settings m, MonadCatch m, MonadThrow m, MonadLogger m, MonadIO m)
-           => Map.Map Version [Tag]
-           -> m [ListResult]
-  strayHLS avTools = do
-    hlss <- getInstalledHLSs
-    fmap catMaybes $ forM hlss $ \case
-      Right ver ->
-        case Map.lookup ver avTools of
-          Just _  -> pure Nothing
-          Nothing -> do
-            lSet    <- fmap (maybe False (== ver)) $ hlsSet
-            pure $ Just $ ListResult
-              { lTool      = HLS
-              , lVer       = ver
-              , lCross     = Nothing
-              , lTag       = []
-              , lInstalled = True
-              , lStray     = maybe True (const False) (Map.lookup ver avTools)
-              , lNoBindist = False
-              , fromSrc    = False -- actually, we don't know :>
-              , hlsPowered = False
              , ..
              }
      Left e -> do
@@ -843,7 +594,6 @@ listVersions av lt criteria pfreq = do
      lSet       <- fmap (maybe False (\(GHCTargetVersion _ v') -> v' == v)) $ ghcSet Nothing
      lInstalled <- ghcInstalled tver
      fromSrc    <- ghcSrcInstalled tver
-      hlsPowered <- fmap (elem v) $ hlsGHCVersions
      pure ListResult { lVer = v, lCross = Nothing , lTag = tags, lTool = t, lStray = False, .. }
    Cabal -> do
      let lNoBindist = isLeft $ getDownloadInfo Cabal v pfreq av
@@ -855,7 +605,6 @@ listVersions av lt criteria pfreq = do
                      , lTool   = t
                      , fromSrc = False
                      , lStray  = False
-                      , hlsPowered = False
                      , ..
                      }
    GHCup -> do
@@ -868,20 +617,6 @@ listVersions av lt criteria pfreq = do
                      , fromSrc = False
                      , lStray  = False
                      , lNoBindist = False
-                      , hlsPowered = False
-                      , ..
-                      }
-    HLS -> do
-      let lNoBindist = isLeft $ getDownloadInfo HLS v pfreq av
-      lSet <- fmap (maybe False (== v)) $ hlsSet
-      lInstalled <- hlsInstalled v
-      pure ListResult { lVer    = v
-                      , lCross  = Nothing
-                      , lTag    = tags
-                      , lTool   = t
-                      , fromSrc = False
-                      , lStray  = False
-                      , hlsPowered = False
                      , ..
                      }

@@ -973,35 +708,6 @@ rmCabalVer ver = do
        (binDir </> [rel|cabal|])


-- | Delete a hls version. Will try to fix the hls symlinks
-- after removal (e.g. setting it to an older version).
-rmHLSVer :: (MonadReader Settings m, MonadThrow m, MonadLogger m, MonadIO m, MonadFail m, MonadCatch m)
-         => Version
-         -> Excepts '[NotInstalled] m ()
-rmHLSVer ver = do
-  whenM (lift $ fmap not $ hlsInstalled ver) $ throwE (NotInstalled HLS (prettyVer ver))
-
-  isHlsSet      <- lift $ hlsSet
-
-  Settings {dirs = Dirs {..}} <- lift ask
-
-  bins <- lift $ hlsAllBinaries ver
-  forM_ bins $ \f -> liftIO $ deleteFile (binDir </> f)
-
-  when (maybe False (== ver) isHlsSet) $ do
-    -- delete all set symlinks
-    oldSyms <- lift hlsSymlinks
-    forM_ oldSyms $ \f -> do
-      lift $ $(logDebug) [i|rm #{toFilePath (binDir </> f)}|]
-      liftIO $ deleteFile (binDir </> f)
-    -- set latest hls
-    hlsVers <- lift $ fmap rights $ getInstalledHLSs
-    case headMay . reverse . sort $ hlsVers of
-      Just latestver -> setHLS latestver
-      Nothing        -> pure ()
-
-
-

    ------------------
    --[ Debug info ]--
@@ -1060,74 +766,51 @@ compileGHC :: ( MonadMask m
                 , PatchFailed
                 , UnknownArchive
                 , TarDirDoesNotExist
-                 , NotInstalled
 #if !defined(TAR)
                 , ArchiveResult
 #endif
                 ]
                m
                ()
-compileGHC dls tver bstrap jobs mbuildConfig patchdir aargs pfreq@(PlatformRequest {..})
-  = do
-    lift $ $(logDebug) [i|Requested to compile: #{tver} with #{bstrap}|]
+compileGHC dls tver bstrap jobs mbuildConfig patchdir aargs PlatformRequest {..} = do
+  lift $ $(logDebug) [i|Requested to compile: #{tver} with #{bstrap}|]
+  whenM (lift $ ghcInstalled tver)
+        (throwE $ AlreadyInstalled GHC (tver ^. tvVersion))

-    alreadyInstalled <- lift $ ghcInstalled tver
-    alreadySet <- fmap (maybe False (==tver)) $ lift $ ghcSet (_tvTarget tver)
+  -- download source tarball
+  dlInfo <-
+    preview (ix GHC % ix (tver ^. tvVersion) % viSourceDL % _Just) dls
+      ?? NoDownload
+  dl        <- liftE $ downloadCached dlInfo Nothing

-    -- download source tarball
-    dlInfo <-
-      preview (ix GHC % ix (tver ^. tvVersion) % viSourceDL % _Just) dls
-        ?? NoDownload
-    dl        <- liftE $ downloadCached dlInfo Nothing
+  -- unpack
+  tmpUnpack <- lift mkGhcupTmpDir
+  liftE $ unpackToDir tmpUnpack dl
+  void $ liftIO $ darwinNotarization _rPlatform tmpUnpack

-    -- unpack
-    tmpUnpack <- lift mkGhcupTmpDir
-    liftE $ unpackToDir tmpUnpack dl
-    void $ liftIO $ darwinNotarization _rPlatform tmpUnpack
+  bghc <- case bstrap of
+    Right g    -> pure $ Right g
+    Left  bver -> Left <$> parseRel ("ghc-" <> verToBS bver)
+  workdir <- maybe (pure tmpUnpack) (liftE . intoSubdir tmpUnpack) (view dlSubdir dlInfo)
+  ghcdir <- lift $ ghcupGHCDir tver

-    bghc <- case bstrap of
-      Right g    -> pure $ Right g
-      Left  bver -> Left <$> parseRel ("ghc-" <> verToBS bver)
-    workdir <- maybe (pure tmpUnpack)
-                     (liftE . intoSubdir tmpUnpack)
-                     (view dlSubdir dlInfo)
-    ghcdir         <- lift $ ghcupGHCDir tver
+  liftE $ runBuildAction
+    tmpUnpack
+    (Just ghcdir)
+    (compile bghc ghcdir workdir >> markSrcBuilt ghcdir workdir)

-    (bindist, bmk) <- liftE $ runBuildAction
-      tmpUnpack
-      Nothing
-      (do
-        b   <- compileBindist bghc ghcdir workdir
-        bmk <- liftIO $ readFileStrict (build_mk workdir)
-        pure (b, bmk)
-      )
-
-    when alreadyInstalled $ do
-      lift $ $(logInfo) [i|Deleting existing installation|]
-      liftE $ rmGHCVer tver
-    liftE $ installPackedGHC bindist
-                             (view dlSubdir dlInfo)
-                             ghcdir
-                             (tver ^. tvVersion)
-                             pfreq
-
-    liftIO $ writeFile (ghcdir </> ghcUpSrcBuiltFile) (Just newFilePerms) bmk
-
-    reThrowAll GHCupSetError $ postGHCInstall tver
-
-    -- restore
-    when alreadySet $ liftE $ void $ setGHC tver SetGHCOnly
-    pure ()
+  reThrowAll GHCupSetError $ postGHCInstall tver
+  pure ()

 where
  defaultConf = case _tvTarget tver of
-    Nothing -> [s|
+                  Nothing -> [s|
 V=0
 BUILD_MAN = NO
 BUILD_SPHINX_HTML = NO
 BUILD_SPHINX_PDF = NO
 HADDOCK_DOCS = YES|]
-    Just _ -> [s|
+                  Just _ -> [s|
 V=0
 BUILD_MAN = NO
 BUILD_SPHINX_HTML = NO
@@ -1135,26 +818,23 @@ BUILD_SPHINX_PDF = NO
 HADDOCK_DOCS = NO
 Stage1Only = YES|]

-  compileBindist :: ( MonadReader Settings m
-                    , MonadThrow m
-                    , MonadCatch m
-                    , MonadLogger m
-                    , MonadIO m
-                    , MonadFail m
-                    )
-                 => Either (Path Rel) (Path Abs)
-                 -> Path Abs
-                 -> Path Abs
-                 -> Excepts
-                      '[FileDoesNotExistError, InvalidBuildConfig, PatchFailed, ProcessError, NotFoundInPATH, CopyError]
-                      m
-                      (Path Abs)  -- ^ output path of bindist
-  compileBindist bghc ghcdir workdir = do
+  compile :: (MonadReader Settings m, MonadThrow m, MonadCatch m, MonadLogger m, MonadIO m)
+          => Either (Path Rel) (Path Abs)
+          -> Path Abs
+          -> Path Abs
+          -> Excepts
+               '[ FileDoesNotExistError
+                , InvalidBuildConfig
+                , PatchFailed
+                , ProcessError
+                , NotFoundInPATH
+                ]
+               m
+               ()
+  compile bghc ghcdir workdir = do
    lift $ $(logInfo) [i|configuring build|]
    liftE $ checkBuildConfig

-    Settings { dirs = Dirs {..} } <- lift ask
-
    forM_ patchdir $ \dir -> liftE $ applyPatches dir workdir

    cEnv <- liftIO $ getEnvironment
@@ -1176,7 +856,6 @@ Stage1Only = YES|]
             )
          ++ fmap E.encodeUtf8 aargs
          )
-          [rel|ghc-conf|]
          (Just workdir)
          (Just (("GHC", toFilePath bghcPath) : cEnv))
      | otherwise -> do
@@ -1192,7 +871,6 @@ Stage1Only = YES|]
             )
          ++ fmap E.encodeUtf8 aargs
          )
-          [rel|ghc-conf|]
          (Just workdir)
          (Just cEnv)

@@ -1205,49 +883,29 @@ Stage1Only = YES|]
        liftIO $ writeFile (build_mk workdir) (Just newFilePerms) defaultConf

    lift $ $(logInfo) [i|Building (this may take a while)...|]
-    lEM $ make (maybe [] (\j -> ["-j" <> fS (show j)]) jobs) (Just workdir)
+    lEM $ make (maybe [] (\j -> ["-j" <> fS (show j)]) jobs)
+                        (Just workdir)

-    lift $ $(logInfo) [i|Creating bindist...|]
-    lEM $ make ["binary-dist"] (Just workdir)
-    [tar] <- liftIO $ findFiles
-      workdir
-      (makeRegexOpts compExtended
-                     execBlank
-                     ([s|^ghc-.*\.tar\..*$|] :: ByteString)
-      )
-    c       <- liftIO $ readFile (workdir </> tar)
-    cDigest <-
-      fmap (T.take 8)
-      . lift
-      . throwEither
-      . E.decodeUtf8'
-      . B16.encode
-      . SHA256.hashlazy
-      $ c
-    tarName <-
-      parseRel
-        [i|ghc-#{prettyTVer tver}-#{prettyPfReq pfreq}-#{cDigest}.tar#{takeExtension (toFilePath tar)}|]
-    let tarPath = cacheDir </> tarName
-    handleIO (throwE . CopyError . show) $ liftIO $ copyFile (workdir </> tar)
-                                                             tarPath
-                                                             Strict
-    lift $ $(logInfo) [i|Copied bindist to #{tarPath}|]
-    pure tarPath
+    lift $ $(logInfo) [i|Installing...|]
+    lEM $ make ["install"] (Just workdir)
+
+  markSrcBuilt ghcdir workdir = do
+    let dest = (ghcdir </> ghcUpSrcBuiltFile)
+    liftIO $ copyFile (build_mk workdir) dest Overwrite

  build_mk workdir = workdir </> [rel|mk/build.mk|]

  checkBuildConfig :: (MonadCatch m, MonadIO m)
                   => Excepts
-                        '[FileDoesNotExistError, InvalidBuildConfig]
+                        '[FileDoesNotExistError , InvalidBuildConfig]
                        m
                        ()
  checkBuildConfig = do
    c <- case mbuildConfig of
      Just bc -> do
-        BL.toStrict <$> liftIOException
-          doesNotExistErrorType
-          (FileDoesNotExistError $ toFilePath bc)
-          (liftIO $ readFile bc)
+        BL.toStrict <$> liftIOException doesNotExistErrorType
+                                        (FileDoesNotExistError $ toFilePath bc)
+                                        (liftIO $ readFile bc)
      Nothing -> pure defaultConf
    let lines' = fmap T.strip . T.lines $ decUTF8Safe c

@@ -1261,6 +919,121 @@ Stage1Only = YES|]



+-- | Compile a cabal from source. This behaves wrt symlinks and installation
+-- the same as 'installCabalBin'.
+compileCabal :: ( MonadReader Settings m
+                , MonadResource m
+                , MonadMask m
+                , MonadLogger m
+                , MonadIO m
+                , MonadFail m
+                )
+             => GHCupDownloads
+             -> Version                    -- ^ version to install
+             -> Either Version (Path Abs)  -- ^ version to bootstrap with
+             -> Maybe Int
+             -> Maybe (Path Abs)
+             -> PlatformRequest
+             -> Excepts
+                  '[ AlreadyInstalled
+                   , BuildFailed
+                   , CopyError
+                   , DigestError
+                   , DownloadFailed
+                   , NoDownload
+                   , NotInstalled
+                   , PatchFailed
+                   , UnknownArchive
+                   , TarDirDoesNotExist
+#if !defined(TAR)
+                   , ArchiveResult
+#endif
+                   ]
+                  m
+                  ()
+compileCabal dls tver bghc jobs patchdir PlatformRequest{..} = do
+  lift $ $(logDebug) [i|Requested to compile: #{tver} with ghc-#{bghc}|]
+
+  Settings {dirs = Dirs {..}} <- lift ask
+
+  whenM
+      (lift (cabalInstalled tver) >>= \a -> liftIO $
+        handleIO (\_ -> pure False)
+          $ fmap (\x -> a && isSymbolicLink x)
+          -- ignore when the installation is a legacy cabal (binary, not symlink)
+          $ getSymbolicLinkStatus (toFilePath (binDir </> [rel|cabal|]))
+      )
+    $ (throwE $ AlreadyInstalled Cabal tver)
+
+  -- download source tarball
+  dlInfo <- preview (ix Cabal % ix tver % viSourceDL % _Just) dls ?? NoDownload
+  dl <- liftE $ downloadCached dlInfo Nothing
+
+  -- unpack
+  tmpUnpack <- lift mkGhcupTmpDir
+  liftE $ unpackToDir tmpUnpack dl
+  void $ liftIO $ darwinNotarization _rPlatform tmpUnpack
+
+  workdir <- maybe (pure tmpUnpack) (liftE . intoSubdir tmpUnpack) (view dlSubdir dlInfo)
+
+  cbin         <- liftE $ runBuildAction tmpUnpack Nothing (compile workdir)
+
+  destFileName <- lift $ parseRel ("cabal-" <> verToBS tver)
+  handleIO (throwE . CopyError . show) $ liftIO $ copyFile
+    cbin
+    (binDir </> destFileName)
+    Overwrite
+
+  -- create symlink if this is the latest version
+  cVers <- lift $ fmap rights $ getInstalledCabals
+  let lInstCabal = headMay . reverse . sort $ cVers
+  when (maybe True (tver >=) lInstCabal) $ liftE $ setCabal tver
+
+  pure ()
+
+ where
+  compile :: (MonadReader Settings m, MonadThrow m, MonadLogger m, MonadIO m, MonadResource m)
+          => Path Abs
+          -> Excepts '[ProcessError , PatchFailed] m (Path Abs)
+  compile workdir = do
+    lift $ $(logInfo) [i|Building (this may take a while)...|]
+
+    forM_ patchdir $ \dir -> liftE $ applyPatches dir workdir
+
+    ghcEnv <- case bghc of
+      Right path -> do
+        -- recover the version from /foo/ghc-6.5.4
+        bn <- basename path
+        let dn  = toFilePath $ dirname path
+        let ver = snd . B.break (== _hyphen) . toFilePath $ bn
+
+        pure
+          [ ("GHC"    , toFilePath path)
+          , ("GHC_PKG", dn <> "/" <> "ghc-pkg" <> ver)
+          , ("HADDOCK", dn <> "/" <> "haddock" <> ver)
+          ]
+      Left bver -> do
+        let v' = verToBS bver
+        pure
+          [ ("GHC"    , "ghc-" <> v')
+          , ("GHC_PKG", "ghc-pkg-" <> v')
+          , ("HADDOCK", "haddock-" <> v')
+          ]
+
+    tmp <- lift withGHCupTmpDir
+    liftIO $ createDirRecursive newDirPerms (tmp </> [rel|bin|])
+    newEnv <- lift $ addToCurrentEnv (("PREFIX", toFilePath tmp) : ghcEnv)
+    lift $ $(logDebug) [i|Environment: #{newEnv}|]
+
+    lEM $ execLogged "./bootstrap.sh"
+                              False
+                              (maybe [] (\j -> ["-j", fS (show j)]) jobs)
+                              (Just workdir)
+                              (Just newEnv)
+    pure $ (tmp </> [rel|bin/cabal|])
+
+
+

    ---------------------
    --[ Upgrade GHCup ]--
--- a/lib/GHCup/Download.hs
+++ b/lib/GHCup/Download.hs
@@ -226,7 +226,7 @@ getDownloads urlSource = do
          else -- access in less than 5 minutes, re-use file
               liftIO $ readFile json_file
      else do
-        liftIO $ createDirRecursive' cacheDir
+        liftIO $ createDirRecursive newDirPerms cacheDir
        getModTime >>= \case
          Just modTime -> dlWithMod modTime json_file
          Nothing -> do
@@ -330,7 +330,7 @@ download dli dest mfn
  scheme = view (dlUri % uriSchemeL' % schemeBSL') dli
  cp     = do
    -- destination dir must exist
-    liftIO $ createDirRecursive' dest
+    liftIO $ hideError AlreadyExists $ createDirRecursive newDirPerms dest
    destFile <- getDestFile
    fromFile <- parseAbs path
    liftIO $ copyFile fromFile destFile Strict
@@ -340,7 +340,7 @@ download dli dest mfn
    lift $ $(logInfo) [i|downloading: #{uri'}|]

    -- destination dir must exist
-    liftIO $ createDirRecursive' dest
+    liftIO $ hideError AlreadyExists $ createDirRecursive newDirPerms dest
    destFile <- getDestFile

    -- download
--- a/lib/GHCup/Download/IOStreams.hs
+++ b/lib/GHCup/Download/IOStreams.hs
@@ -13,6 +13,7 @@ module GHCup.Download.IOStreams where

 import           GHCup.Download.Utils
 import           GHCup.Errors
+import           GHCup.Types
 import           GHCup.Types.Optics
 import           GHCup.Types.JSON               ( )
 import           GHCup.Utils.File
--- a/lib/GHCup/Errors.hs
+++ b/lib/GHCup/Errors.hs
@@ -152,10 +152,3 @@ data ParseError = ParseError String
  deriving Show

 instance Exception ParseError
-
-
-data UnexpectedListLength = UnexpectedListLength String
-  deriving Show
-
-instance Exception UnexpectedListLength
-
--- a/lib/GHCup/Requirements.hs
+++ b/lib/GHCup/Requirements.hs
@@ -48,7 +48,7 @@ prettyRequirements :: Requirements -> T.Text
 prettyRequirements Requirements {..} =
  let d = if not . null $ _distroPKGs
        then
-          "\n  Please install the following distro packages: "
+          "\n  Install the following distro packages: "
            <> T.intercalate " " _distroPKGs
        else ""
      n = if not . T.null $ _notes then "\n  Note: " <> _notes else ""
--- a/lib/GHCup/Types.hs
+++ b/lib/GHCup/Types.hs
@@ -1,6 +1,10 @@
+{-# OPTIONS_GHC -Wno-orphans #-}
+
 {-# LANGUAGE CPP               #-}
 {-# LANGUAGE DeriveGeneric     #-}
 {-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE TypeSynonymInstances #-}
+{-# LANGUAGE FlexibleInstances #-}

 {-|
 Module      : GHCup.Types
@@ -13,13 +17,15 @@ Portability : POSIX
 -}
 module GHCup.Types where

+import           Control.Concurrent.MVar
+import           Data.ByteString                ( ByteString )
 import           Data.Map.Strict                ( Map )
 import           Data.Text                      ( Text )
 import           Data.Versions
 import           HPath
 import           URI.ByteString
+import           System.Posix.Types

-import qualified Data.Text                     as T
 import qualified GHC.Generics                  as GHC


@@ -76,7 +82,6 @@ type PlatformVersionSpec = Map (Maybe Versioning) DownloadInfo
 data Tool = GHC
          | Cabal
          | GHCup
-          | HLS
  deriving (Eq, GHC.Generic, Ord, Show)


@@ -88,7 +93,7 @@ data VersionInfo = VersionInfo
  , _viSourceDL  :: Maybe DownloadInfo -- ^ source tarball
  , _viArch      :: ArchitectureSpec   -- ^ descend for binary downloads per arch
  }
-  deriving (Eq, GHC.Generic, Show)
+  deriving (Eq, Show)


 -- | A tag. These are currently attached to a version of a tool.
@@ -96,9 +101,8 @@ data Tag = Latest
         | Recommended
         | Prerelease
         | Base PVP
-         | Old                -- ^ old version are hidden by default in TUI
         | UnknownTag String  -- ^ used for upwardscompat
-         deriving (Ord, Eq, GHC.Generic, Show) -- FIXME: manual JSON instance
+         deriving (Ord, Eq, Show) -- FIXME: manual JSON instance


 data Architecture = A_64
@@ -111,15 +115,6 @@ data Architecture = A_64
                  | A_ARM64
  deriving (Eq, GHC.Generic, Ord, Show)

-prettyArch :: Architecture -> String
-prettyArch A_64 = "x86_64"
-prettyArch A_32 = "i386"
-prettyArch A_PowerPC = "powerpc"
-prettyArch A_PowerPC64 = "powerpc64"
-prettyArch A_Sparc = "sparc"
-prettyArch A_Sparc64 = "sparc64"
-prettyArch A_ARM = "arm"
-prettyArch A_ARM64 = "aarch64"

 data Platform = Linux LinuxDistro
              -- ^ must exit
@@ -128,11 +123,6 @@ data Platform = Linux LinuxDistro
              | FreeBSD
  deriving (Eq, GHC.Generic, Ord, Show)

-prettyPlatfrom :: Platform -> String
-prettyPlatfrom (Linux distro) = "linux-" ++ prettyDistro distro
-prettyPlatfrom Darwin = "darwin"
-prettyPlatfrom FreeBSD = "freebsd"
-
 data LinuxDistro = Debian
                 | Ubuntu
                 | Mint
@@ -149,19 +139,6 @@ data LinuxDistro = Debian
                 -- ^ must exit
  deriving (Eq, GHC.Generic, Ord, Show)

-prettyDistro :: LinuxDistro -> String
-prettyDistro Debian = "debian"
-prettyDistro Ubuntu = "ubuntu"
-prettyDistro Mint= "mint"
-prettyDistro Fedora = "fedora"
-prettyDistro CentOS = "centos"
-prettyDistro RedHat = "redhat"
-prettyDistro Alpine = "alpine"
-prettyDistro AmazonLinux = "amazon"
-prettyDistro Gentoo = "gentoo"
-prettyDistro Exherbo = "exherbo"
-prettyDistro UnknownLinux = "unknown"
-

 -- | An encapsulation of a download. This can be used
 -- to download, extract and install a tool.
@@ -170,7 +147,7 @@ data DownloadInfo = DownloadInfo
  , _dlSubdir :: Maybe TarDir
  , _dlHash   :: Text
  }
-  deriving (Eq, GHC.Generic, Show)
+  deriving (Eq, Show)



@@ -183,14 +160,35 @@ data DownloadInfo = DownloadInfo
 -- | How to descend into a tar archive.
 data TarDir = RealDir (Path Rel)
            | RegexDir String     -- ^ will be compiled to regex, the first match will "win"
-            deriving (Eq, GHC.Generic, Show)
+            deriving (Eq, Show)


 -- | Where to fetch GHCupDownloads from.
 data URLSource = GHCupURL
               | OwnSource URI
               | OwnSpec GHCupInfo
-               deriving (GHC.Generic, Show)
+               deriving Show
+
+
+data ProcessError = NonZeroExit Int ByteString [ByteString]
+                  | PTerminated ByteString [ByteString]
+                  | PStopped ByteString [ByteString]
+                  | NoSuchPid ByteString [ByteString]
+                  deriving (Eq, Show)
+
+data ProcState = PRunning ProcessID
+               | PExited (Either ProcessError ())
+  deriving Eq
+
+type ExecCb =    Bool       -- verbose
+              -> Fd         -- log file fd
+              -> Fd         -- input fd to read from
+              -> MVar ProcState  -- state of the producing process
+              -> ByteString -- log filename
+              -> IO ()
+
+instance Show ExecCb where
+  show _ = "**ExecCb**"


 data Settings = Settings
@@ -203,6 +201,7 @@ data Settings = Settings

    -- set on app start
  , dirs       :: Dirs
+  , execCb     :: ExecCb
  }
  deriving Show

@@ -249,12 +248,6 @@ data PlatformResult = PlatformResult
  }
  deriving (Eq, Show)

-prettyPlatform :: PlatformResult -> String
-prettyPlatform PlatformResult { _platform = plat, _distroVersion = Just v' }
-  = show plat <> ", " <> show v'
-prettyPlatform PlatformResult { _platform = plat, _distroVersion = Nothing }
-  = show plat
-
 data PlatformRequest = PlatformRequest
  { _rArch     :: Architecture
  , _rPlatform :: Platform
@@ -262,13 +255,6 @@ data PlatformRequest = PlatformRequest
  }
  deriving (Eq, Show)

-prettyPfReq :: PlatformRequest -> String
-prettyPfReq (PlatformRequest arch plat ver) =
-  prettyArch arch ++ "-" ++ prettyPlatfrom plat ++ pver
- where
-  pver = case ver of
-           Just v' -> "-" ++ (T.unpack $ prettyV v')
-           Nothing -> ""

 -- | A GHC identified by the target platform triple
 -- and the version.
--- a/lib/GHCup/Types/JSON.hs
+++ b/lib/GHCup/Types/JSON.hs
@@ -55,7 +55,6 @@ instance ToJSON Tag where
  toJSON Latest             = String "Latest"
  toJSON Recommended        = String "Recommended"
  toJSON Prerelease         = String "Prerelease"
-  toJSON Old                = String "old"
  toJSON (Base       pvp'') = String ("base-" <> prettyPVP pvp'')
  toJSON (UnknownTag x    ) = String (T.pack x)

@@ -64,7 +63,6 @@ instance FromJSON Tag where
    "Latest"                             -> pure Latest
    "Recommended"                        -> pure Recommended
    "Prerelease"                         -> pure Prerelease
-    "old"                                -> pure Old
    ('b' : 'a' : 's' : 'e' : '-' : ver') -> case pvp (T.pack ver') of
      Right x -> pure $ Base x
      Left  e -> fail . show $ e
--- a/lib/GHCup/Utils.hs
+++ b/lib/GHCup/Utils.hs
@@ -36,7 +36,7 @@ import           GHCup.Utils.Prelude
 import           GHCup.Utils.String.QQ

 #if !defined(TAR)
-import           Codec.Archive           hiding ( Directory )
+import           Codec.Archive
 #endif
 import           Control.Applicative
 import           Control.Exception.Safe
@@ -301,150 +301,6 @@ cabalSet = do



-- | Get all installed hls, by matching on
-- @~\/.ghcup\/bin/haskell-language-server-wrapper-<\hlsver\>@.
-getInstalledHLSs :: (MonadReader Settings m, MonadIO m, MonadCatch m)
-                 => m [Either (Path Rel) Version]
-getInstalledHLSs = do
-  Settings { dirs = Dirs {..} } <- ask
-  bins                          <- liftIO $ handleIO (\_ -> pure []) $ findFiles
-    binDir
-    (makeRegexOpts compExtended
-                   execBlank
-                   ([s|^haskell-language-server-wrapper-.*$|] :: ByteString)
-    )
-  vs <- forM bins $ \f ->
-    case
-        fmap
-          version
-          (fmap decUTF8Safe . B.stripPrefix "haskell-language-server-wrapper-" . toFilePath $ f)
-      of
-        Just (Right r) -> pure $ Right r
-        Just (Left  _) -> pure $ Left f
-        Nothing        -> pure $ Left f
-  pure $ vs
-
-
-- | Whether the given HLS version is installed.
-hlsInstalled :: (MonadIO m, MonadReader Settings m, MonadCatch m) => Version -> m Bool
-hlsInstalled ver = do
-  vers <- fmap rights $ getInstalledHLSs
-  pure $ elem ver $ vers
-
-
-
-- Return the currently set hls version, if any.
-hlsSet :: (MonadReader Settings m, MonadIO m, MonadThrow m, MonadCatch m) => m (Maybe Version)
-hlsSet = do
-  Settings {dirs = Dirs {..}} <- ask
-  let hlsBin = binDir </> [rel|haskell-language-server-wrapper|]
-
-  liftIO $ handleIO' NoSuchThing (\_ -> pure $ Nothing) $ do
-    broken <- isBrokenSymlink hlsBin
-    if broken
-      then pure Nothing
-      else do
-        link <- readSymbolicLink $ toFilePath hlsBin
-        Just <$> linkVersion link
- where
-  linkVersion :: MonadThrow m => ByteString -> m Version
-  linkVersion bs = do
-    t <- throwEither $ E.decodeUtf8' bs
-    throwEither $ MP.parse parser "" t
-   where
-    parser =
-      MP.chunk "haskell-language-server-wrapper-" *> version'
-
-
-- | Return the GHC versions the currently selected HLS supports.
-hlsGHCVersions :: ( MonadReader Settings m
-                  , MonadIO m
-                  , MonadThrow m
-                  , MonadCatch m
-                  )
-               => m [Version]
-hlsGHCVersions = do
-  h                             <- hlsSet
-  vers                          <- forM h $ \h' -> do
-    bins <- hlsServerBinaries h'
-    pure $ fmap
-      (\bin ->
-        version
-          . decUTF8Safe
-          . fromJust
-          . B.stripPrefix "haskell-language-server-"
-          . head
-          . B.split _tilde
-          . toFilePath
-          $ bin
-      )
-      bins
-  pure . rights . concat . maybeToList $ vers
-
-
-- | Get all server binaries for an hls version, if any.
-hlsServerBinaries :: (MonadReader Settings m, MonadIO m)
-                  => Version
-                  -> m [Path Rel]
-hlsServerBinaries ver = do
-  Settings { dirs = Dirs {..} } <- ask
-  liftIO $ handleIO (\_ -> pure []) $ findFiles
-    binDir
-    (makeRegexOpts
-      compExtended
-      execBlank
-      ([s|^haskell-language-server-.*~|] <> escapeVerRex ver <> [s|$|] :: ByteString
-      )
-    )
-
-
-- | Get the wrapper binary for an hls version, if any.
-hlsWrapperBinary :: (MonadReader Settings m, MonadThrow m, MonadIO m)
-                 => Version
-                 -> m (Maybe (Path Rel))
-hlsWrapperBinary ver = do
-  Settings { dirs = Dirs {..} } <- ask
-  wrapper                       <- liftIO $ handleIO (\_ -> pure []) $ findFiles
-    binDir
-    (makeRegexOpts
-      compExtended
-      execBlank
-      ([s|^haskell-language-server-wrapper-|] <> escapeVerRex ver <> [s|$|] :: ByteString
-      )
-    )
-  case wrapper of
-    []  -> pure $ Nothing
-    [x] -> pure $ Just x
-    _   -> throwM $ UnexpectedListLength
-      "There were multiple hls wrapper binaries for a single version"
-
-
-- | Get all binaries for an hls version, if any.
-hlsAllBinaries :: (MonadReader Settings m, MonadIO m, MonadThrow m) => Version -> m [Path Rel]
-hlsAllBinaries ver = do
-  hls     <- hlsServerBinaries ver
-  wrapper <- hlsWrapperBinary ver
-  pure (maybeToList wrapper ++ hls)
-
-
-- | Get the active symlinks for hls.
-hlsSymlinks :: (MonadReader Settings m, MonadIO m, MonadCatch m) => m [Path Rel]
-hlsSymlinks = do
-  Settings { dirs = Dirs {..} } <- ask
-  oldSyms                       <- liftIO $ handleIO (\_ -> pure []) $ findFiles
-    binDir
-    (makeRegexOpts compExtended
-                   execBlank
-                   ([s|^haskell-language-server-.*$|] :: ByteString)
-    )
-  filterM
-    ( fmap (== SymbolicLink)
-    . liftIO
-    . getFileType
-    . (binDir </>)
-    )
-    oldSyms
-


    -----------------------------------------
@@ -694,7 +550,7 @@ make args workdir = do
  spaths    <- catMaybes . fmap parseAbs <$> (liftIO getSearchPath)
  has_gmake <- isJust <$> (liftIO $ searchPath spaths [rel|gmake|])
  let mymake = if has_gmake then "gmake" else "make"
-  execLogged mymake True args [rel|ghc-make|] workdir Nothing
+  execLogged mymake True args workdir Nothing


 -- | Try to apply patches in order. Fails with 'PatchFailed'
@@ -740,8 +596,8 @@ getChangeLog dls tool (Right tag) =
 --   1. the build directory, depending on the KeepDirs setting
 --   2. the install destination, depending on whether the build failed
 runBuildAction :: (Show (V e), MonadReader Settings m, MonadIO m, MonadMask m)
-               => Path Abs          -- ^ build directory (cleaned up depending on Settings)
-               -> Maybe (Path Abs)  -- ^ dir to *always* clean up on exception
+               => Path Abs          -- ^ build directory
+               -> Maybe (Path Abs)  -- ^ install location (e.g. for GHC)
               -> Excepts e m a
               -> Excepts '[BuildFailed] m a
 runBuildAction bdir instdir action = do
@@ -765,25 +621,3 @@ runBuildAction bdir instdir action = do
  when (keepDirs == Never || keepDirs == Errors) $ liftIO $ deleteDirRecursive
    bdir
  pure v
-
-
-- | More permissive version of 'createDirRecursive'. This doesn't
-- error when the destination is a symlink to a directory.
-createDirRecursive' :: Path b -> IO ()
-createDirRecursive' p =
-  handleIO (\e -> if isAlreadyExistsError e then isSymlinkDir e else throwIO e)
-    . createDirRecursive newDirPerms
-    $ p
-
- where
-  isSymlinkDir e = do
-    ft <- getFileType p
-    case ft of
-      SymbolicLink -> do
-        rp <- canonicalizePath p
-        rft <- getFileType rp
-        case rft of
-          Directory -> pure ()
-          _ -> throwIO e
-      _ -> throwIO e
-
--- a/lib/GHCup/Utils/File.hs
+++ b/lib/GHCup/Utils/File.hs
@@ -72,14 +72,6 @@ import qualified "unix-bytestring" System.Posix.IO.ByteString
                                               as SPIB


-
-data ProcessError = NonZeroExit Int ByteString [ByteString]
-                  | PTerminated ByteString [ByteString]
-                  | PStopped ByteString [ByteString]
-                  | NoSuchPid ByteString [ByteString]
-                  deriving Show
-
-
 data CapturedProcess = CapturedProcess
  { _exitCode :: ExitCode
  , _stdOut   :: ByteString
@@ -121,30 +113,31 @@ execLogged :: (MonadReader Settings m, MonadIO m, MonadThrow m)
           => ByteString       -- ^ thing to execute
           -> Bool             -- ^ whether to search PATH for the thing
           -> [ByteString]     -- ^ args for the thing
-           -> Path Rel         -- ^ log filename
           -> Maybe (Path Abs) -- ^ optionally chdir into this
           -> Maybe [(ByteString, ByteString)] -- ^ optional environment
           -> m (Either ProcessError ())
-execLogged exe spath args lfile chdir env = do
+execLogged exe spath args chdir env = do
  Settings {dirs = Dirs {..}, ..} <- ask
-  logfile       <- (logsDir </>) <$> parseRel (toFilePath lfile <> ".log")
+  logfile       <- (logsDir </>) <$> parseRel (lfile <> ".log")
  liftIO $ bracket (createFile (toFilePath logfile) newFilePerms)
                   closeFd
-                   (action verbose)
+                   (action verbose execCb)
 where
-  action verbose fd = do
+  lfile = fromMaybe exe $ BS.stripPrefix "./" exe
+
+  action verbose cb fd = do
    actionWithPipes $ \(stdoutRead, stdoutWrite) -> do
      -- start the thread that logs to stdout
-      pState <- newEmptyMVar
-      done   <- newEmptyMVar
+      pState  <- newEmptyMVar
+      done    <- newEmptyMVar
+      liftIO $ HPath.IO.writeFile [HPath.abs|/home/jule/git/ghcup-hs/cb.log|] Nothing "execLogged1"
      void
        $ forkIO
        $ EX.handle (\(_ :: IOException) -> pure ())
        $ flip EX.finally (putMVar done ())
-        $ (if verbose
-            then tee fd stdoutRead
-            else printToRegion fd stdoutRead 6 pState
-          )
+        $ (do
+            liftIO $ HPath.IO.writeFile [HPath.abs|/home/jule/git/ghcup-hs/cb.log|] Nothing "execLogged"
+            cb verbose fd stdoutRead pState lfile)

      -- fork the subprocess
      pid <- SPPB.forkProcess $ do
@@ -157,115 +150,57 @@ execLogged exe spath args lfile chdir env = do
        maybe (pure ()) (changeWorkingDirectory . toFilePath) chdir
        void $ SPPB.executeFile exe spath args env

+      putMVar pState (PRunning pid)
+
      closeFd stdoutWrite

      -- wait for the subprocess to finish
      e <- toProcessError exe args <$!> SPPB.getProcessStatus True True pid
-      putMVar pState (either (const False) (const True) e)
+      void $ swapMVar pState (PExited e)

      void $ race (takeMVar done) (threadDelay (1000000 * 3))
      closeFd stdoutRead

      pure e

-  tee :: Fd -> Fd -> IO ()
-  tee fileFd fdIn = readTilEOF lineAction fdIn

-   where
-    lineAction :: ByteString -> IO ()
-    lineAction bs' = do
-      void $ SPIB.fdWrite fileFd (bs' <> "\n")
-      void $ SPIB.fdWrite stdOutput (bs' <> "\n")
+readLineTilEOF :: MonadIO m => (ByteString -> m a) -> Fd -> m ()
+readLineTilEOF ~action' fd' = go mempty
+ where
+  go bs' = do
+    (bs, rest, eof) <- readLine fd' bs'
+    if eof
+       then liftIO $ ioError (mkIOError eofErrorType "" Nothing Nothing)
+       else (void $ action' bs) >> go rest

-  -- Reads fdIn and logs the output in a continous scrolling area
-  -- of 'size' terminal lines. Also writes to a log file.
-  printToRegion :: Fd -> Fd -> Int -> MVar Bool -> IO ()
-  printToRegion fileFd fdIn size pState = do
-    void $ displayConsoleRegions $ do
-      rs <-
-        liftIO
-        . fmap Sq.fromList
-        . sequence
-        . replicate size
-        . openConsoleRegion
-        $ Linear
-      flip runStateT mempty
-        $ handle
-            (\(ex :: SomeException) -> do
-              ps <- liftIO $ takeMVar pState
-              when (ps == True) (forM_ rs (liftIO . closeConsoleRegion))
-              throw ex
-            )
-        $ readTilEOF (lineAction rs) fdIn

-   where
-    -- action to perform line by line
-    -- TODO: do this with vty for efficiency
-    lineAction :: (MonadMask m, MonadIO m)
-               => Seq ConsoleRegion
-               -> ByteString
-               -> StateT (Seq ByteString) m ()
-    lineAction rs = \bs' -> do
-      void $ liftIO $ SPIB.fdWrite fileFd (bs' <> "\n")
-      modify (swapRegs bs')
-      regs <- get
-      liftIO $ forM_ (Sq.zip regs rs) $ \(bs, r) -> setConsoleRegion r $ do
-        w <- consoleWidth
-        return
-          . T.pack
-          . color Blue
-          . T.unpack
-          . decUTF8Safe
-          . trim w
-          . (\b -> "[ " <> toFilePath lfile <> " ] " <> b)
-          $ bs
+-- Consecutively read from Fd in 512 chunks until we hit
+-- newline or EOF.
+readLine :: MonadIO m
+         => Fd          -- ^ input file descriptor
+         -> ByteString  -- ^ rest buffer (read across newline)
+         -> m (ByteString, ByteString, Bool) -- ^ (full line, rest, eof)
+readLine fd = \inBs -> go inBs
+ where
+  go inBs = do
+    -- if buffer is not empty, process it first
+    mbs <- if BS.length inBs == 0
+             -- otherwise attempt read
+             then liftIO
+                  $ handleIO (\e -> if isEOFError e then pure Nothing else ioError e)
+                  $ fmap Just
+                  $ SPIB.fdRead fd 512
+             else pure $ Just inBs
+    case mbs of
+      Nothing -> pure ("", "", True)
+      Just bs -> do
+        -- split on newline
+        let (line, rest) = BS.span (/= _lf) bs
+        if
+          | BS.length rest /= 0 -> pure (line, BS.tail rest, False)
+          -- if rest is empty, then there was no newline, process further
+          | otherwise           -> (\(l, r, b) -> (line <> l, r, b)) <$!> go mempty

-    swapRegs :: a -> Seq a -> Seq a
-    swapRegs bs = \regs -> if
-      | Sq.length regs < size -> regs |> bs
-      | otherwise             -> Sq.drop 1 regs |> bs
-
-    -- trim output line to terminal width
-    trim :: Int -> ByteString -> ByteString
-    trim w = \bs -> if
-      | BS.length bs > w && w > 5 -> BS.take (w - 4) bs <> "..."
-      | otherwise                 -> bs
-
-  -- Consecutively read from Fd in 512 chunks until we hit
-  -- newline or EOF.
-  readLine :: MonadIO m
-           => Fd          -- ^ input file descriptor
-           -> ByteString  -- ^ rest buffer (read across newline)
-           -> m (ByteString, ByteString, Bool) -- ^ (full line, rest, eof)
-  readLine fd = \inBs -> go inBs
-   where
-    go inBs = do
-      -- if buffer is not empty, process it first
-      mbs <- if BS.length inBs == 0
-               -- otherwise attempt read
-               then liftIO
-                    $ handleIO (\e -> if isEOFError e then pure Nothing else ioError e)
-                    $ fmap Just
-                    $ SPIB.fdRead fd 512
-               else pure $ Just inBs
-      case mbs of
-        Nothing -> pure ("", "", True)
-        Just bs -> do
-          -- split on newline
-          let (line, rest) = BS.span (/= _lf) bs
-          if
-            | BS.length rest /= 0 -> pure (line, BS.tail rest, False)
-            -- if rest is empty, then there was no newline, process further
-            | otherwise           -> (\(l, r, b) -> (line <> l, r, b)) <$!> go mempty
-
-  readTilEOF :: MonadIO m => (ByteString -> m a) -> Fd -> m ()
-  readTilEOF ~action' fd' = go mempty
-   where
-    go bs' = do
-      (bs, rest, eof) <- readLine fd' bs'
-      if eof
-         then liftIO $ ioError (mkIOError eofErrorType "" Nothing Nothing)
-         else (void $ action' bs) >> go rest


 -- | Capture the stdout and stderr of the given action, which
@@ -450,3 +385,76 @@ chmod_777 (toFilePath -> fp) = do
  $(logDebug) [i|chmod 777 #{fp}|]
  liftIO $ setFileMode fp exe_mode

+
+-- | The default callback for logging/printing on 'execLogged'.
+defExecCb :: ExecCb
+defExecCb verbose fd stdoutRead pState lfile = if verbose
+      then tee fd stdoutRead
+      else printToRegion fd stdoutRead 6
+ where
+  tee :: Fd -> Fd -> IO ()
+  tee fileFd fdIn = readLineTilEOF lineAction fdIn
+
+   where
+    lineAction :: ByteString -> IO ()
+    lineAction bs' = do
+      void $ SPIB.fdWrite fileFd (bs' <> "\n")
+      void $ SPIB.fdWrite stdOutput (bs' <> "\n")
+
+  -- Reads fdIn and logs the output in a continous scrolling area
+  -- of 'size' terminal lines. Also writes to a log file.
+  printToRegion :: Fd -> Fd -> Int -> IO ()
+  printToRegion fileFd fdIn size = do
+    void $ displayConsoleRegions $ do
+      rs <-
+        liftIO
+        . fmap Sq.fromList
+        . sequence
+        . replicate size
+        . openConsoleRegion
+        $ Linear
+      flip runStateT mempty
+        $ handle
+            (\(ex :: SomeException) -> do
+              let closeEventually = readMVar pState >>= \case
+                    PExited (Right _) -> forM_ rs (liftIO . closeConsoleRegion)
+                    _ -> threadDelay 500 >> closeEventually
+              void $ liftIO $ race closeEventually (threadDelay (1000000 * 3))
+              throw ex
+            )
+        $ readLineTilEOF (lineAction rs) fdIn
+
+   where
+    -- action to perform line by line
+    -- TODO: do this with vty for efficiency
+    lineAction :: (MonadMask m, MonadIO m)
+               => Seq ConsoleRegion
+               -> ByteString
+               -> StateT (Seq ByteString) m ()
+    lineAction rs = \bs' -> do
+      void $ liftIO $ SPIB.fdWrite fileFd (bs' <> "\n")
+      modify (swapRegs bs')
+      regs <- get
+      liftIO $ forM_ (Sq.zip regs rs) $ \(bs, r) -> setConsoleRegion r $ do
+        w <- consoleWidth
+        return
+          . T.pack
+          . color Blue
+          . T.unpack
+          . decUTF8Safe
+          . trim w
+          . (\b -> "[ " <> lfile <> " ] " <> b)
+          $ bs
+
+    swapRegs :: a -> Seq a -> Seq a
+    swapRegs bs = \regs -> if
+      | Sq.length regs < size -> regs |> bs
+      | otherwise             -> Sq.drop 1 regs |> bs
+
+    -- trim output line to terminal width
+    trim :: Int -> ByteString -> ByteString
+    trim w = \bs -> if
+      | BS.length bs > w && w > 5 -> BS.take (w - 4) bs <> "..."
+      | otherwise                 -> bs
+
+
--- a/lib/GHCup/Utils/Logger.hs
+++ b/lib/GHCup/Utils/Logger.hs
@@ -15,7 +15,6 @@ Here we define our main logger.
 module GHCup.Utils.Logger where

 import           GHCup.Types
-import           GHCup.Utils

 import           Control.Monad
 import           Control.Monad.IO.Class
@@ -70,7 +69,7 @@ initGHCupFileLogging context = do
  Settings {dirs = Dirs {..}} <- ask
  let logfile = logsDir </> context
  liftIO $ do
-    createDirRecursive' logsDir
+    createDirRecursive newDirPerms logsDir
    hideError doesNotExistErrorType $ deleteFile logfile
    createRegularFile newFilePerms logfile
    pure logfile
--- a/lib/GHCup/Utils/Prelude.hs
+++ b/lib/GHCup/Utils/Prelude.hs
@@ -31,13 +31,11 @@ import           Data.ByteString                ( ByteString )
 import           Data.String
 import           Data.Text                      ( Text )
 import           Data.Versions
-import           Data.Word8
 import           Haskus.Utils.Types.List
 import           Haskus.Utils.Variant.Excepts
 import           System.IO.Error
 import           System.Posix.Env.ByteString    ( getEnvironment )

-import qualified Data.ByteString               as B
 import qualified Data.ByteString.Lazy          as L
 import qualified Data.Strict.Maybe             as S
 import qualified Data.Text                     as T
@@ -277,13 +275,3 @@ decUTF8Safe = E.decodeUtf8With E.lenientDecode

 decUTF8Safe' :: L.ByteString -> Text
 decUTF8Safe' = TL.toStrict . TLE.decodeUtf8With E.lenientDecode
-
-
-- | Escape a version for use in regex
-escapeVerRex :: Version -> ByteString
-escapeVerRex = B.pack . go . B.unpack . verToBS
- where
-  go [] = []
-  go (x : xs) | x == _period = [_backslash, _period] ++ go xs
-              | otherwise    = x : go xs
-
--- a/lib/GHCup/Version.hs
+++ b/lib/GHCup/Version.hs
@@ -22,11 +22,11 @@ import qualified Data.Text                     as T

 -- | This reflects the API version of the YAML.
 ghcupURL :: URI
-ghcupURL = [uri|https://www.haskell.org/ghcup/data/ghcup-0.0.3.yaml|]
+ghcupURL = [uri|https://www.haskell.org/ghcup/data/ghcup-0.0.2.yaml|]

 -- | The current ghcup version.
 ghcUpVer :: PVP
-ghcUpVer = [pver|0.1.12|]
+ghcUpVer = [pver|0.1.10|]

 -- | ghcup version as numeric string.
 numericVer :: String
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,70 +0,0 @@
-resolver: lts-16.17
-
-packages:
-  - .
-
-extra-deps:
-  - 3rdparty/lzma
-  - 3rdparty/lzma-clib
-  - 3rdparty/zlib
-
-  - git: https://github.com/haskus/packages.git
-    commit: 80a1c5fc07f7226c424250ec17f674cd4d618f42
-    subdirs:
-      - haskus-utils-types
-
-  - git: https://github.com/hasufell/hpath.git
-    commit: bf6d28cf989b70286e12fecc183d5bbf5454a1a2
-    subdirs:
-      - hpath-io
-      - hpath-directory
-
-  - git: https://github.com/hasufell/text-conversions.git
-    commit: 9abf0e5e5664a3178367597c32db19880477a53c
-
-  - IfElse-0.85@sha256:6939b94acc6a55f545f63a168a349dd2fbe4b9a7cca73bf60282db5cc6aa47d2,445
-  - QuickCheck-2.14.1@sha256:01e46d7b0a8d3148288ec977625f62d5516ebb5031a50c63f0453863301b4a79,7736
-  - ascii-string-1.0.1.4@sha256:fa34f1d9ba57e8e89c0d4c9cef5e01ba32cb2d4373d13f92dcc0b531a6c6749b,2582
-  - base64-bytestring-1.1.0.0@sha256:190264fef9e65d9085f00ccda419137096d1dc94777c58272bc96821dc7f37c3,2334
-  - brick-0.55@sha256:f98736eca0cd694837062e06da4655eed969d53b789dfd919716e9b6f5b4c5ce,15858
-  - brotli-0.0.0.0@sha256:2bf383a4cd308745740986be0b18381c5a0784393fe69b91456aacb2d603de46,2964
-  - brotli-streams-0.0.0.0@sha256:1af1e22f67b8bfd6ad0d05e61825e7a178d738f689ebbb21c1aab5f1bbcae176,2331
-  - chs-cabal-0.1.1.0@sha256:20ec6a9fb5ab6991f1a4adf157c537bd5d3b98d08d3c09c387c954c7c50bd011,1153
-  - chs-deps-0.1.0.0@sha256:0cdada6d2c682c41b20331b8c63c2ecfc7e806928585195fd544c9d41f3074fd,2496
-  - composition-prelude-3.0.0.0@sha256:7407835ce8c1e0e2fd6febd25391b12989b216773e685e3cf95bd89072af0ecc,1149
-  - haskus-utils-data-1.3@sha256:f62c4e49021b463185d043f7b69c727b63af641a71d7edd582d9f4f98e80e500,1466
-  - haskus-utils-variant-3.0@sha256:8d51e45d3b664e61ccc25a58b37c0ccc4ee7537138b9fee21cd15c356906dd34,2159
-  - hpath-0.11.0@sha256:12b8405bee13d0007d644a888ef8407069ce7bbbd76970f8746b801447124ade,1440
-  - hpath-filepath-0.10.4@sha256:e9e44fb5fdbade7f30b5b5451257dbee15b6ef1aae4060034d73008bb3b5d878,1269
-  - hpath-posix-0.13.2@sha256:eec4ff2b00dc86be847aca0f409fc8f6212ffd2170ec36a17dc9a52b46562392,1615
-  - http-io-streams-0.1.4.0@sha256:9a74a059daeddf7a41d361919190b9f4d4292f05e0e4bdf156e2098a116a8145,3582
-  - libarchive-3.0.0.0@sha256:e4157b307acf16cca0ec3d398ac5093cc06f092b33a9743be559ef0f6c6ae52f,11204
-  - os-release-1.0.1@sha256:1281c62081f438fc3f0874d3bae6a4887d5964ac25261ba06e29d368ab173467,2716
-  - primitive-extras-0.8@sha256:fca0310150496867f5b9421fe1541ecda87fae17eae44885a29f9c52dd00c8ff,2963
-  - primitive-unlifted-0.1.3.0@sha256:a98f827740f5dcf097d885b3a47c32f4462204449620abc9d51b8c4f8619f9e6,1427
-  - random-1.2.0@sha256:4321209c8faedc034810ea8ed0dbc4a36f1a1df97b75af024219f2f533da57de,6094
-  - splitmix-0.1.0.1@sha256:22f9662e7e8b173421872241edd39350078a9ed4bb9e9f503948c5b483c79276,5253
-  - streamly-posix-0.1.0.1@sha256:5d89b806281035d34020387ed99dde1ddab282c7ed66df3b7cd010b38fd3517b,2138
-  - strict-base-0.4.0.0@sha256:2ff4e43cb95eedf2995558d7fc34d19362846413dd39e6aa6a5b3ea8228fef9f,1248
-  - tar-bytestring-0.6.3.2@sha256:88f29bed56b688c543a4cb3986402d64b360f76b3fd9b88ac618b8344f8da712,5715
-  - vty-5.30@sha256:4af3938d7b9e6096e222bf52d0ea5d39873bc6fe19febd34106906306af13730,20857
-  - xor-0.0.1.0@sha256:f8362b4a68562b9afbcd727ff64c1a303970df3a032e0033d2f4c094c3501df3,2243
-
-flags:
-  http-io-streams:
-    brotli: false
-
-  libarchive:
-    system-libarchive: false
-
-  ghcup:
-    tui: true
-
-system-ghc: true
-compiler: ghc-8.8.4
-compiler-check: match-exact
-
-ghc-options:
-  "$locals": -O2
-  streamly: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16
-  ghcup: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16
--- a/test/GHCup/ArbitraryTypes.hs
+++ b/test/GHCup/ArbitraryTypes.hs
@@ -1,193 +0,0 @@
-{-# OPTIONS_GHC -Wno-orphans #-}
-
-{-# LANGUAGE FlexibleInstances #-}
-{-# LANGUAGE StandaloneDeriving #-}
-{-# LANGUAGE DeriveGeneric #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TypeApplications #-}
-
-module GHCup.ArbitraryTypes where
-
-
-import           GHCup.Types
-
-import           Data.ByteString                ( ByteString )
-import           Data.Versions
-import           Data.List.NonEmpty
-import           HPath
-import           Test.QuickCheck
-import           Test.QuickCheck.Arbitrary.ADT  ( ToADTArbitrary )
-import           Test.QuickCheck.Arbitrary.Generic
-import           URI.ByteString
-
-import qualified Data.Map.Strict               as M
-import qualified Data.Text                     as T
-import qualified Data.Text.Encoding            as E
-import qualified Data.Text.Lazy                as T
-                                                ( toStrict )
-import qualified Data.Text.Lazy.Builder        as B
-import qualified Data.Text.Lazy.Builder.Int    as B
-
-
-    -----------------
-    --[ utilities ]--
-    -----------------
-
-intToText :: Integral a => a -> T.Text
-intToText = T.toStrict . B.toLazyText . B.decimal
-
-genVer :: Gen (Int, Int, Int)
-genVer =
-  (\x y z -> (getPositive x, getPositive y, getPositive z))
-    <$> arbitrary
-    <*> arbitrary
-    <*> arbitrary
-
-
-instance ToADTArbitrary GHCupInfo
-
-
-
-    ----------------------
-    --[ base arbitrary ]--
-    ----------------------
-
-instance Arbitrary T.Text where
-  arbitrary = fmap T.pack $ listOf $ elements ['a' .. 'z']
-  shrink xs = T.pack <$> shrink (T.unpack xs)
-
-instance Arbitrary (NonEmpty Word) where
-  arbitrary = fmap fromList $ listOf1 $ arbitrary
-
-- utf8 encoded bytestring
-instance Arbitrary ByteString where
-  arbitrary = fmap (E.encodeUtf8 . T.pack) $ listOf $ elements ['a' .. 'z']
-
-
-
-    ---------------------
-    --[ uri arbitrary ]--
-    ---------------------
-
-instance Arbitrary Scheme where
-  arbitrary = oneof [ Scheme <$> pure "http", Scheme <$> pure "https" ]
-
-instance Arbitrary Host where
-  arbitrary = genericArbitrary
-  shrink    = genericShrink
-
-instance Arbitrary Port where
-  arbitrary = genericArbitrary
-  shrink    = genericShrink
-
-instance Arbitrary (URIRef Absolute) where
-  arbitrary =
-    URI <$> arbitrary <*> pure Nothing <*> arbitrary <*> (Query <$> pure []) <*> pure Nothing
-
-
-
-    -------------------------
-    --[ version arbitrary ]--
-    -------------------------
-
-instance Arbitrary Mess where
-  arbitrary = do
-    (x, y, z) <- genVer
-    pure
-      $ either (error . show) id
-      $ mess
-      $ (intToText x <> "." <> intToText y <> "." <> intToText z)
-
-instance Arbitrary Version where
-  arbitrary = do
-    (x, y, z) <- genVer
-    pure
-      $ either (error . show) id
-      $ version
-      $ (intToText x <> "." <> intToText y <> "." <> intToText z)
-
-instance Arbitrary SemVer where
-  arbitrary = do
-    (x, y, z) <- genVer
-    pure
-      $ either (error . show) id
-      $ semver
-      $ (intToText x <> "." <> intToText y <> "." <> intToText z)
-
-instance Arbitrary PVP where
-  arbitrary = do
-    (x, y, z) <- genVer
-    pure
-      $ either (error . show) id
-      $ pvp
-      $ (intToText x <> "." <> intToText y <> "." <> intToText z)
-
-instance Arbitrary Versioning where
-  arbitrary = Ideal <$> arbitrary
-
-
-
-    -----------------------
-    --[ ghcup arbitrary ]--
-    -----------------------
-
-instance Arbitrary Requirements where
-  arbitrary = genericArbitrary
-  shrink    = genericShrink
-
-instance Arbitrary DownloadInfo where
-  arbitrary = genericArbitrary
-  shrink    = genericShrink
-
-instance Arbitrary LinuxDistro where
-  arbitrary = genericArbitrary
-  shrink    = genericShrink
-
-instance Arbitrary Platform where
-  arbitrary = genericArbitrary
-  shrink    = genericShrink
-
-instance Arbitrary Tag where
-  arbitrary = genericArbitrary
-  shrink    = genericShrink
-
-instance Arbitrary Architecture where
-  arbitrary = genericArbitrary
-  shrink    = genericShrink
-
-instance Arbitrary VersionInfo where
-  arbitrary = genericArbitrary
-  shrink    = genericShrink
-
-instance Arbitrary (Path Rel) where
-  arbitrary =
-    (either (error . show) id . parseRel . E.encodeUtf8 . T.pack)
-      <$> (listOf1 $ elements ['a' .. 'z'])
-
-instance Arbitrary TarDir where
-  arbitrary = genericArbitrary
-  shrink    = genericShrink
-
-instance Arbitrary Tool where
-  arbitrary = genericArbitrary
-  shrink    = genericShrink
-
-instance Arbitrary GHCupInfo where
-  arbitrary = genericArbitrary
-  shrink    = genericShrink
-
-
-- our maps are nested... the default size easily blows up most ppls ram
-
-instance {-# OVERLAPS #-} Arbitrary v => Arbitrary (M.Map Tool v) where
-  arbitrary = resize 8 $ M.fromList <$> arbitrary
-
-instance {-# OVERLAPS #-} Arbitrary v => Arbitrary (M.Map (Maybe Version) v) where
-  arbitrary = resize 8 $ M.fromList <$> arbitrary
-
-instance {-# OVERLAPS #-} Arbitrary v => Arbitrary (M.Map Platform v) where
-  arbitrary = resize 8 $ M.fromList <$> arbitrary
-
-instance {-# OVERLAPS #-} Arbitrary v => Arbitrary (M.Map (Maybe Versioning) v) where
-  arbitrary = resize 8 $ M.fromList <$> arbitrary
-
--- a/test/GHCup/Types/JSONSpec.hs
+++ b/test/GHCup/Types/JSONSpec.hs
@@ -1,17 +0,0 @@
-{-# LANGUAGE DeriveGeneric #-}
-{-# LANGUAGE TypeApplications #-}
-
-module GHCup.Types.JSONSpec where
-
-import           GHCup.ArbitraryTypes ()
-import           GHCup.Types
-import           GHCup.Types.JSON ()
-
-import           Test.Aeson.GenericSpecs
-import           Test.Hspec
-
-
-
-spec :: Spec
-spec = do
-  roundtripAndGoldenSpecs (Proxy @GHCupInfo)
--- a/test/Main.hs
+++ b/test/Main.hs
@@ -1,12 +0,0 @@
-{-# LANGUAGE OverloadedStrings #-}
-
-import Test.Hspec.Runner
-import Test.Hspec.Formatters
-import qualified Spec
-
-
-main :: IO ()
-main =
-  hspecWith
-    defaultConfig { configFormatter = Just progress }
-    $ Spec.spec
--- a/test/MyLibTest.hs
+++ b/test/MyLibTest.hs
@@ -0,0 +1,4 @@
+module Main (main) where
+
+main :: IO ()
+main = putStrLn "Test suite not yet implemented."
--- a/test/Spec.hs
+++ b/test/Spec.hs
@@ -1,2 +0,0 @@
-- file test/Spec.hs
-{-# OPTIONS_GHC -F -pgmF hspec-discover -optF --module-name=Spec #-}