{-# LANGUAGE CPP #-}
{-# LANGUAGE BangPatterns #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE QuasiQuotes #-}
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE ViewPatterns #-}
{-|
Module : GHCup.Utils
Description : GHCup domain specific utilities
Copyright : (c) Julian Ospald, 2020
License : LGPL-3.0
Maintainer : hasufell@hasufell.de
Stability : experimental
Portability : portable
This module contains GHCup helpers specific to
installation and introspection of files/versions etc.
-}
module GHCup.Utils
( module GHCup.Utils.Dirs
, module GHCup.Utils.Tar
, module GHCup.Utils
, module GHCup.Utils.URI
#if defined(IS_WINDOWS)
, module GHCup.Prelude.Windows
#else
, module GHCup.Prelude.Posix
#endif
)
where
#if defined(IS_WINDOWS)
import GHCup.Prelude.Windows
#else
import GHCup.Prelude.Posix
#endif
import GHCup.Download
import GHCup.Errors
import GHCup.Types
import GHCup.Types.Optics
import GHCup.Types.JSON ( )
import GHCup.Utils.Dirs
import GHCup.Utils.Tar
import GHCup.Utils.URI
import GHCup.Version
import GHCup.Prelude
import GHCup.Prelude.File
import GHCup.Prelude.Logger.Internal
import GHCup.Prelude.MegaParsec
import GHCup.Prelude.Process
import GHCup.Prelude.String.QQ
import Control.Applicative
import Control.Exception.Safe
import Control.Monad
#if !MIN_VERSION_base(4,13,0)
import Control.Monad.Fail ( MonadFail )
#endif
import Control.Monad.Reader
import Control.Monad.Trans.Resource
hiding ( throwM )
import Control.Monad.IO.Unlift ( MonadUnliftIO( withRunInIO ) )
import Data.Char ( isHexDigit )
import Data.ByteString ( ByteString )
import Data.Either
import Data.Foldable
import Data.List
import Data.List.NonEmpty ( NonEmpty( (:|) ))
import Data.Maybe
import Data.Text ( Text )
import Data.Versions hiding ( patch )
import GHC.IO.Exception
import Haskus.Utils.Variant.Excepts
import Optics
import Safe
import System.FilePath
import System.IO.Error
import Text.Regex.Posix
import Text.PrettyPrint.HughesPJClass (prettyShow)
import URI.ByteString hiding (parseURI)
import qualified Data.Map.Strict as Map
import qualified Data.Text as T
import qualified Data.Text.Encoding as E
import qualified Text.Megaparsec as MP
import qualified Data.List.NonEmpty as NE
import qualified Streamly.Prelude as S
import Control.DeepSeq (force)
import GHC.IO (evaluate)
import Data.Time (Day(..), diffDays, addDays)
-- $setup
-- >>> :set -XOverloadedStrings
-- >>> :set -XDataKinds
-- >>> :set -XTypeApplications
-- >>> :set -XQuasiQuotes
-- >>> import System.Directory
-- >>> import URI.ByteString
-- >>> import qualified Data.Text as T
-- >>> import GHCup.Prelude
-- >>> import GHCup.Download
-- >>> import GHCup.Version
-- >>> import GHCup.Errors
-- >>> import GHCup.Types
-- >>> import GHCup.Types.Optics
-- >>> import Optics
-- >>> import GHCup.Prelude.Version.QQ
-- >>> import qualified Data.Text.Encoding as E
-- >>> import Control.Monad.Reader
-- >>> import Haskus.Utils.Variant.Excepts
-- >>> import Text.PrettyPrint.HughesPJClass ( prettyShow )
-- >>> let lc = LoggerConfig { lcPrintDebug = False, consoleOutter = mempty, fileOutter = mempty, fancyColors = False }
-- >>> dirs' <- getAllDirs
-- >>> let installedVersions = [ ([pver|8.10.7|], "-debug+lol", Nothing), ([pver|8.10.4|], "", Nothing), ([pver|8.8.4|], "", Nothing), ([pver|8.8.3|], "", Nothing) ]
-- >>> let settings = defaultSettings { cache = True, metaCache = 0, noNetwork = True }
-- >>> let leanAppState = LeanAppState settings dirs' defaultKeyBindings lc
-- >>> cwd <- getCurrentDirectory
-- >>> (Right ref) <- pure $ parseURI strictURIParserOptions $ "file://" <> E.encodeUtf8 (T.pack cwd) <> "/data/metadata/" <> (urlBaseName . view pathL' $ ghcupURL)
-- >>> (VRight r) <- (fmap . fmap) _ghcupDownloads $ flip runReaderT leanAppState . runE @'[DigestError, GPGError, JSONError , DownloadFailed , FileDoesNotExistError, ContentLengthError] $ liftE $ getBase ref
------------------------
--[ Symlink handling ]--
------------------------
-- | Create a relative symlink destination for the binary directory,
-- given a target toolpath.
binarySymLinkDestination :: ( MonadThrow m
, MonadIO m
)
=> FilePath -- ^ binary dir
-> FilePath -- ^ the full toolpath
-> m FilePath
binarySymLinkDestination binDir toolPath = do
toolPath' <- liftIO $ canonicalizePath toolPath
binDir' <- liftIO $ canonicalizePath binDir
pure (relativeSymlink binDir' toolPath')
-- | Removes the minor GHC symlinks, e.g. ghc-8.6.5.
rmMinorGHCSymlinks :: ( MonadReader env m
, HasDirs env
, MonadIO m
, HasLog env
, MonadThrow m
, MonadFail m
, MonadMask m
)
=> GHCTargetVersion
-> Excepts '[NotInstalled] m ()
rmMinorGHCSymlinks tv@GHCTargetVersion{..} = do
Dirs {..} <- lift getDirs
files <- liftE $ ghcToolFiles tv
forM_ files $ \f -> do
let f_xyz = f <> "-" <> T.unpack (prettyVer _tvVersion) <> exeExt
let fullF = binDir </> f_xyz
lift $ logDebug ("rm -f " <> T.pack fullF)
lift $ hideError doesNotExistErrorType $ rmLink fullF
-- | Removes the set ghc version for the given target, if any.
rmPlainGHC :: ( MonadReader env m
, HasDirs env
, HasLog env
, MonadThrow m
, MonadFail m
, MonadIO m
, MonadMask m
)
=> Maybe Text -- ^ target
-> Excepts '[NotInstalled] m ()
rmPlainGHC target = do
Dirs {..} <- lift getDirs
mtv <- lift $ ghcSet target
forM_ mtv $ \tv -> do
files <- liftE $ ghcToolFiles tv
forM_ files $ \f -> do
let fullF = binDir </> f <> exeExt
lift $ logDebug ("rm -f " <> T.pack fullF)
lift $ hideError doesNotExistErrorType $ rmLink fullF
-- old ghcup
let hdc_file = binDir </> "haddock-ghc" <> exeExt
lift $ logDebug ("rm -f " <> T.pack hdc_file)
lift $ hideError doesNotExistErrorType $ rmLink hdc_file
-- | Remove the major GHC symlink, e.g. ghc-8.6.
rmMajorGHCSymlinks :: ( MonadReader env m
, HasDirs env
, MonadIO m
, HasLog env
, MonadThrow m
, MonadFail m
, MonadMask m
)
=> GHCTargetVersion
-> Excepts '[NotInstalled] m ()
rmMajorGHCSymlinks tv@GHCTargetVersion{..} = do
Dirs {..} <- lift getDirs
(mj, mi) <- getMajorMinorV _tvVersion
let v' = intToText mj <> "." <> intToText mi
files <- liftE $ ghcToolFiles tv
forM_ files $ \f -> do
let f_xy = f <> "-" <> T.unpack v' <> exeExt
let fullF = binDir </> f_xy
lift $ logDebug ("rm -f " <> T.pack fullF)
lift $ hideError doesNotExistErrorType $ rmLink fullF
-- | Removes the minor HLS files, e.g. 'haskell-language-server-8.10.7~1.6.1.0'
-- and 'haskell-language-server-wrapper-1.6.1.0'.
rmMinorHLSSymlinks :: ( MonadReader env m
, HasDirs env
, MonadIO m
, HasLog env
, MonadThrow m
, MonadFail m
, MonadMask m
)
=> Version
-> Excepts '[NotInstalled] m ()
rmMinorHLSSymlinks ver = do
Dirs {..} <- lift getDirs
hlsBins <- hlsAllBinaries ver
forM_ hlsBins $ \f -> do
let fullF = binDir </> f
lift $ logDebug ("rm -f " <> T.pack fullF)
-- on unix, this may be either a file (legacy) or a symlink
-- on windows, this is always a file... hence 'rmFile'
-- works consistently across platforms
lift $ rmFile fullF
-- | Removes the set HLS version, if any.
rmPlainHLS :: ( MonadReader env m
, HasDirs env
, HasLog env
, MonadThrow m
, MonadFail m
, MonadIO m
, MonadMask m
)
=> Excepts '[NotInstalled] m ()
rmPlainHLS = do
Dirs {..} <- lift getDirs
-- delete 'haskell-language-server-8.10.7'
hlsBins <- fmap (filter (\f -> not ("haskell-language-server-wrapper" `isPrefixOf` f) && ('~' `notElem` f)))
$ liftIO $ handleIO (\_ -> pure []) $ findFiles
binDir
(makeRegexOpts compExtended execBlank ([s|^haskell-language-server-.*$|] :: ByteString))
forM_ hlsBins $ \f -> do
let fullF = binDir </> f
lift $ logDebug ("rm -f " <> T.pack fullF)
if isWindows
then lift $ rmLink fullF
else lift $ rmFile fullF
-- 'haskell-language-server-wrapper'
let hlswrapper = binDir </> "haskell-language-server-wrapper" <> exeExt
lift $ logDebug ("rm -f " <> T.pack hlswrapper)
if isWindows
then lift $ hideError doesNotExistErrorType $ rmLink hlswrapper
else lift $ hideError doesNotExistErrorType $ rmFile hlswrapper
-----------------------------------
--[ Set/Installed introspection ]--
-----------------------------------
-- | Whether the given GHC version is installed.
ghcInstalled :: (MonadIO m, MonadReader env m, HasDirs env, MonadThrow m) => GHCTargetVersion -> m Bool
ghcInstalled ver = do
ghcdir <- ghcupGHCDir ver
liftIO $ doesDirectoryExist (fromGHCupPath ghcdir)
-- | Whether the given GHC version is set as the current.
ghcSet :: (MonadReader env m, HasDirs env, MonadThrow m, MonadIO m)
=> Maybe Text -- ^ the target of the GHC version, if any
-- (e.g. armv7-unknown-linux-gnueabihf)
-> m (Maybe GHCTargetVersion)
ghcSet mtarget = do
Dirs {..} <- getDirs
let ghc = maybe "ghc" (\t -> T.unpack t <> "-ghc") mtarget
let ghcBin = binDir </> ghc <> exeExt
-- link destination is of the form ../ghc/<ver>/bin/ghc
-- for old ghcup, it is ../ghc/<ver>/bin/ghc-<ver>
liftIO $ handleIO' NoSuchThing (\_ -> pure Nothing) $ do
link <- liftIO $ getLinkTarget ghcBin
Just <$> ghcLinkVersion link
where
ghcLinkVersion :: MonadThrow m => FilePath -> m GHCTargetVersion
ghcLinkVersion (T.pack . dropSuffix exeExt -> t) = throwEither $ MP.parse parser "ghcLinkVersion" t
where
parser =
(do
_ <- parseUntil1 ghcSubPath
_ <- ghcSubPath
r <- parseUntil1 pathSep
rest <- MP.getInput
MP.setInput r
x <- ghcTargetVerP
MP.setInput rest
pure x
)
<* MP.some pathSep
<* MP.takeRest
<* MP.eof
ghcSubPath = MP.some pathSep <* MP.chunk "ghc" *> MP.some pathSep
-- | Get all installed GHCs by reading ~/.ghcup/ghc/<dir>.
-- If a dir cannot be parsed, returns left.
getInstalledGHCs :: (MonadReader env m, HasDirs env, MonadIO m) => m [Either FilePath GHCTargetVersion]
getInstalledGHCs = do
ghcdir <- ghcupGHCBaseDir
fs <- liftIO $ hideErrorDef [NoSuchThing] [] $ listDirectoryDirs (fromGHCupPath ghcdir)
forM fs $ \f -> case parseGHCupGHCDir f of
Right r -> pure $ Right r
Left _ -> pure $ Left f
-- | Get all installed cabals, by matching on @~\/.ghcup\/bin/cabal-*@.
getInstalledCabals :: ( MonadReader env m
, HasDirs env
, MonadIO m
, MonadCatch m
)
=> m [Either FilePath Version]
getInstalledCabals = do
Dirs {..} <- getDirs
bins <- liftIO $ handleIO (\_ -> pure []) $ findFiles
binDir
(makeRegexOpts compExtended execBlank ([s|^cabal-.*$|] :: ByteString))
vs <- forM bins $ \f -> case version . T.pack <$> (stripSuffix exeExt =<< stripPrefix "cabal-" f) of
Just (Right r) -> pure $ Right r
Just (Left _) -> pure $ Left f
Nothing -> pure $ Left f
pure $ nub vs
-- | Whether the given cabal version is installed.
cabalInstalled :: (MonadIO m, MonadReader env m, HasDirs env, MonadCatch m) => Version -> m Bool
cabalInstalled ver = do
vers <- fmap rights getInstalledCabals
pure $ elem ver vers
-- Return the currently set cabal version, if any.
cabalSet :: (HasLog env, MonadReader env m, HasDirs env, MonadIO m, MonadThrow m, MonadCatch m) => m (Maybe Version)
cabalSet = do
Dirs {..} <- getDirs
let cabalbin = binDir </> "cabal" <> exeExt
handleIO' NoSuchThing (\_ -> pure Nothing) $ do
broken <- liftIO $ isBrokenSymlink cabalbin
if broken
then do
logWarn $ "Broken symlink at " <> T.pack cabalbin
pure Nothing
else do
link <- liftIO
$ handleIO' InvalidArgument
(\e -> pure $ Left (toException e))
$ fmap Right $ getLinkTarget cabalbin
case linkVersion =<< link of
Right v -> pure $ Just v
Left err -> do
logWarn $ "Failed to parse cabal symlink target with: "
<> T.pack (displayException err)
<> ". The symlink "
<> T.pack cabalbin
<> " needs to point to valid cabal binary, such as 'cabal-3.4.0.0'."
pure Nothing
where
-- We try to be extra permissive with link destination parsing,
-- because of:
-- https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/119
linkVersion :: MonadThrow m => FilePath -> m Version
linkVersion = throwEither . MP.parse parser "linkVersion" . T.pack . dropSuffix exeExt
parser
= MP.try (stripAbsolutePath *> cabalParse)
<|> MP.try (stripRelativePath *> cabalParse)
<|> cabalParse
-- parses the version of "cabal-3.2.0.0" -> "3.2.0.0"
cabalParse = MP.chunk "cabal-" *> version'
-- parses any path component ending with path separator,
-- e.g. "foo/"
stripPathComponet = parseUntil1 pathSep *> MP.some pathSep
-- parses an absolute path up until the last path separator,
-- e.g. "/bar/baz/foo" -> "/bar/baz/", leaving "foo"
stripAbsolutePath = MP.some pathSep *> MP.many (MP.try stripPathComponet)
-- parses a relative path up until the last path separator,
-- e.g. "bar/baz/foo" -> "bar/baz/", leaving "foo"
stripRelativePath = MP.many (MP.try stripPathComponet)
-- | Get all installed hls, by matching on
-- @~\/.ghcup\/bin/haskell-language-server-wrapper-<\hlsver\>@,
-- as well as @~\/.ghcup\/hls\/<\hlsver\>@
getInstalledHLSs :: (MonadReader env m, HasDirs env, MonadIO m, MonadCatch m)
=> m [Either FilePath Version]
getInstalledHLSs = do
Dirs {..} <- getDirs
bins <- liftIO $ handleIO (\_ -> pure []) $ findFiles
binDir
(makeRegexOpts compExtended
execBlank
([s|^haskell-language-server-wrapper-.*$|] :: ByteString)
)
legacy <- forM bins $ \f ->
case
version . T.pack <$> (stripSuffix exeExt =<< stripPrefix "haskell-language-server-wrapper-" f)
of
Just (Right r) -> pure $ Right r
Just (Left _) -> pure $ Left f
Nothing -> pure $ Left f
hlsdir <- ghcupHLSBaseDir
fs <- liftIO $ hideErrorDef [NoSuchThing] [] $ listDirectoryDirs (fromGHCupPath hlsdir)
new <- forM fs $ \f -> case parseGHCupHLSDir f of
Right r -> pure $ Right r
Left _ -> pure $ Left f
pure (nub (new <> legacy))
-- | Get all installed stacks, by matching on
-- @~\/.ghcup\/bin/stack-<\stackver\>@.
getInstalledStacks :: (MonadReader env m, HasDirs env, MonadIO m, MonadCatch m)
=> m [Either FilePath Version]
getInstalledStacks = do
Dirs {..} <- getDirs
bins <- liftIO $ handleIO (\_ -> pure []) $ findFiles
binDir
(makeRegexOpts compExtended
execBlank
([s|^stack-.*$|] :: ByteString)
)
forM bins $ \f ->
case version . T.pack <$> (stripSuffix exeExt =<< stripPrefix "stack-" f) of
Just (Right r) -> pure $ Right r
Just (Left _) -> pure $ Left f
Nothing -> pure $ Left f
-- Return the currently set stack version, if any.
-- TODO: there's a lot of code duplication here :>
stackSet :: (MonadReader env m, HasDirs env, MonadIO m, MonadThrow m, MonadCatch m, HasLog env) => m (Maybe Version)
stackSet = do
Dirs {..} <- getDirs
let stackBin = binDir </> "stack" <> exeExt
handleIO' NoSuchThing (\_ -> pure Nothing) $ do
broken <- liftIO $ isBrokenSymlink stackBin
if broken
then do
logWarn $ "Broken symlink at " <> T.pack stackBin
pure Nothing
else do
link <- liftIO
$ handleIO' InvalidArgument
(\e -> pure $ Left (toException e))
$ fmap Right $ getLinkTarget stackBin
case linkVersion =<< link of
Right v -> pure $ Just v
Left err -> do
logWarn $ "Failed to parse stack symlink target with: "
<> T.pack (displayException err)
<> ". The symlink "
<> T.pack stackBin
<> " needs to point to valid stack binary, such as 'stack-2.7.1'."
pure Nothing
where
linkVersion :: MonadThrow m => FilePath -> m Version
linkVersion = throwEither . MP.parse parser "" . T.pack . dropSuffix exeExt
where
parser
= MP.try (stripAbsolutePath *> cabalParse)
<|> MP.try (stripRelativePath *> cabalParse)
<|> cabalParse
-- parses the version of "stack-2.7.1" -> "2.7.1"
cabalParse = MP.chunk "stack-" *> version'
-- parses any path component ending with path separator,
-- e.g. "foo/"
stripPathComponet = parseUntil1 pathSep *> MP.some pathSep
-- parses an absolute path up until the last path separator,
-- e.g. "/bar/baz/foo" -> "/bar/baz/", leaving "foo"
stripAbsolutePath = MP.some pathSep *> MP.many (MP.try stripPathComponet)
-- parses a relative path up until the last path separator,
-- e.g. "bar/baz/foo" -> "bar/baz/", leaving "foo"
stripRelativePath = MP.many (MP.try stripPathComponet)
-- | Whether the given Stack version is installed.
stackInstalled :: (MonadIO m, MonadReader env m, HasDirs env, MonadCatch m) => Version -> m Bool
stackInstalled ver = do
vers <- fmap rights getInstalledStacks
pure $ elem ver vers
-- | Whether the given HLS version is installed.
hlsInstalled :: (MonadIO m, MonadReader env m, HasDirs env, MonadCatch m) => Version -> m Bool
hlsInstalled ver = do
vers <- fmap rights getInstalledHLSs
pure $ elem ver vers
isLegacyHLS :: (MonadIO m, MonadReader env m, HasDirs env, MonadCatch m) => Version -> m Bool
isLegacyHLS ver = do
bdir <- ghcupHLSDir ver
not <$> liftIO (doesDirectoryExist $ fromGHCupPath bdir)
-- Return the currently set hls version, if any.
hlsSet :: (HasLog env, MonadReader env m, HasDirs env, MonadIO m, MonadThrow m, MonadCatch m) => m (Maybe Version)
hlsSet = do
Dirs {..} <- getDirs
let hlsBin = binDir </> "haskell-language-server-wrapper" <> exeExt
handleIO' NoSuchThing (\_ -> pure Nothing) $ do
broken <- liftIO $ isBrokenSymlink hlsBin
if broken
then do
logWarn $ "Broken symlink at " <> T.pack hlsBin
pure Nothing
else do
link <- liftIO $ getLinkTarget hlsBin
Just <$> linkVersion link
where
linkVersion :: MonadThrow m => FilePath -> m Version
linkVersion = throwEither . MP.parse parser "" . T.pack . dropSuffix exeExt
where
parser
= MP.try (stripAbsolutePath *> cabalParse)
<|> MP.try (stripRelativePath *> cabalParse)
<|> cabalParse
-- parses the version of "haskell-language-server-wrapper-1.1.0" -> "1.1.0"
cabalParse = MP.chunk "haskell-language-server-wrapper-" *> version'
-- parses any path component ending with path separator,
-- e.g. "foo/"
stripPathComponet = parseUntil1 pathSep *> MP.some pathSep
-- parses an absolute path up until the last path separator,
-- e.g. "/bar/baz/foo" -> "/bar/baz/", leaving "foo"
stripAbsolutePath = MP.some pathSep *> MP.many (MP.try stripPathComponet)
-- parses a relative path up until the last path separator,
-- e.g. "bar/baz/foo" -> "bar/baz/", leaving "foo"
stripRelativePath = MP.many (MP.try stripPathComponet)
-- | Return the GHC versions the currently selected HLS supports.
hlsGHCVersions :: ( MonadReader env m
, HasDirs env
, HasLog env
, MonadIO m
, MonadThrow m
, MonadCatch m
)
=> m [Version]
hlsGHCVersions = do
h <- hlsSet
fromMaybe [] <$> forM h hlsGHCVersions'
hlsGHCVersions' :: ( MonadReader env m
, HasDirs env
, MonadIO m
, MonadThrow m
, MonadCatch m
)
=> Version
-> m [Version]
hlsGHCVersions' v' = do
bins <- hlsServerBinaries v' Nothing
let vers = fmap
(version
. T.pack
. fromJust
. stripPrefix "haskell-language-server-"
. head
. splitOn "~"
)
bins
pure . sortBy (flip compare) . rights $ vers
-- | Get all server binaries for an hls version from the ~/.ghcup/bin directory, if any.
hlsServerBinaries :: (MonadReader env m, HasDirs env, MonadIO m)
=> Version
-> Maybe Version -- ^ optional GHC version
-> m [FilePath]
hlsServerBinaries ver mghcVer = do
Dirs {..} <- getDirs
liftIO $ handleIO (\_ -> pure []) $ findFiles
binDir
(makeRegexOpts
compExtended
execBlank
([s|^haskell-language-server-|]
<> maybe [s|.*|] escapeVerRex mghcVer
<> [s|~|]
<> escapeVerRex ver
<> E.encodeUtf8 (T.pack exeExt)
<> [s|$|] :: ByteString
)
)
-- | Get all scripts for a hls version from the ~/.ghcup/hls/<ver>/bin directory, if any.
-- Returns the full path.
hlsInternalServerScripts :: (MonadReader env m, HasDirs env, MonadIO m, MonadThrow m)
=> Version
-> Maybe Version -- ^ optional GHC version
-> m [FilePath]
hlsInternalServerScripts ver mghcVer = do
dir <- ghcupHLSDir ver
let bdir = fromGHCupPath dir </> "bin"
fmap (bdir </>) . filter (\f -> maybe True (\gv -> ("-" <> T.unpack (prettyVer gv)) `isSuffixOf` f) mghcVer)
<$> liftIO (listDirectoryFiles bdir)
-- | Get all binaries for a hls version from the ~/.ghcup/hls/<ver>/lib/haskell-language-server-<ver>/bin directory, if any.
-- Returns the full path.
hlsInternalServerBinaries :: (MonadReader env m, HasDirs env, MonadIO m, MonadThrow m, MonadFail m)
=> Version
-> Maybe Version -- ^ optional GHC version
-> m [FilePath]
hlsInternalServerBinaries ver mghcVer = do
dir <- fromGHCupPath <$> ghcupHLSDir ver
let regex = makeRegexOpts compExtended execBlank ([s|^haskell-language-server-.*$|] :: ByteString)
(Just bdir) <- fmap headMay $ liftIO $ expandFilePath [Left (dir </> "lib"), Right regex, Left "bin"]
fmap (bdir </>) . filter (\f -> maybe True (\gv -> ("-" <> T.unpack (prettyVer gv)) `isSuffixOf` f) mghcVer)
<$> liftIO (listDirectoryFiles bdir)
-- | Get all libraries for a hls version from the ~/.ghcup/hls/<ver>/lib/haskell-language-server-<ver>/lib/<ghc-ver>/
-- directory, if any.
-- Returns the full path.
hlsInternalServerLibs :: (MonadReader env m, HasDirs env, MonadIO m, MonadThrow m, MonadFail m)
=> Version
-> Version -- ^ GHC version
-> m [FilePath]
hlsInternalServerLibs ver ghcVer = do
dir <- fromGHCupPath <$> ghcupHLSDir ver
let regex = makeRegexOpts compExtended execBlank ([s|^haskell-language-server-.*$|] :: ByteString)
(Just bdir) <- fmap headMay $ liftIO $ expandFilePath [Left (dir </> "lib"), Right regex, Left ("lib" </> T.unpack (prettyVer ghcVer))]
fmap (bdir </>) <$> liftIO (listDirectoryFiles bdir)
-- | Get the wrapper binary for an hls version, if any.
hlsWrapperBinary :: (MonadReader env m, HasDirs env, MonadThrow m, MonadIO m)
=> Version
-> m (Maybe FilePath)
hlsWrapperBinary ver = do
Dirs {..} <- getDirs
wrapper <- liftIO $ handleIO (\_ -> pure []) $ findFiles
binDir
(makeRegexOpts
compExtended
execBlank
([s|^haskell-language-server-wrapper-|] <> escapeVerRex ver <> E.encodeUtf8 (T.pack exeExt) <> [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 env m, HasDirs env, MonadIO m, MonadThrow m) => Version -> m [FilePath]
hlsAllBinaries ver = do
hls <- hlsServerBinaries ver Nothing
wrapper <- hlsWrapperBinary ver
pure (maybeToList wrapper ++ hls)
-----------------------------------------
--[ Major version introspection (X.Y) ]--
-----------------------------------------
-- | Extract (major, minor) from any version.
getMajorMinorV :: MonadThrow m => Version -> m (Int, Int)
getMajorMinorV (Version _ (Chunks (Numeric x :| Numeric y : _)) _ _) = pure (fromIntegral x, fromIntegral y)
getMajorMinorV _ = throwM $ ParseError "Could not parse X.Y from version"
matchMajor :: Version -> Int -> Int -> Bool
matchMajor v' major' minor' = case getMajorMinorV v' of
Just (x, y) -> x == major' && y == minor'
Nothing -> False
-- | Match PVP prefix.
--
-- >>> matchPVPrefix [pver|8.8|] [pver|8.8.4|]
-- True
-- >>> matchPVPrefix [pver|8|] [pver|8.8.4|]
-- True
-- >>> matchPVPrefix [pver|8.10|] [pver|8.8.4|]
-- False
-- >>> matchPVPrefix [pver|8.10|] [pver|8.10.7|]
-- True
matchPVPrefix :: PVP -> PVP -> Bool
matchPVPrefix (toL -> prefix) (toL -> full) = and $ zipWith (==) prefix full
toL :: PVP -> [Int]
toL (PVP inner) = fmap fromIntegral $ NE.toList inner
-- | Get the latest installed full GHC version that satisfies the given (possibly partial)
-- PVP version.
getGHCForPVP :: (MonadReader env m, HasDirs env, MonadIO m, MonadThrow m)
=> PVP
-> Maybe Text -- ^ the target triple
-> m (Maybe GHCTargetVersion)
getGHCForPVP pvpIn mt = do
ghcs <- rights <$> getInstalledGHCs
-- we're permissive here... failed parse just means we have no match anyway
let ghcs' = catMaybes $ flip fmap ghcs $ \GHCTargetVersion{..} -> do
(pvp_, rest) <- versionToPVP _tvVersion
pure (pvp_, rest, _tvTarget)
getGHCForPVP' pvpIn ghcs' mt
-- | Like 'getGHCForPVP', except with explicit input parameter.
--
-- >>> getGHCForPVP' [pver|8|] installedVersions Nothing
-- Just (GHCTargetVersion {_tvTarget = Nothing, _tvVersion = Version {_vEpoch = Nothing, _vChunks = Chunks (Numeric 8 :| [Numeric 10,Numeric 7]), _vRel = Just (Release (Alphanum "debug" :| [])), _vMeta = Just "lol"}})
-- >>> fmap prettyShow $ getGHCForPVP' [pver|8.8|] installedVersions Nothing
-- "Just 8.8.4"
-- >>> fmap prettyShow $ getGHCForPVP' [pver|8.10.4|] installedVersions Nothing
-- "Just 8.10.4"
getGHCForPVP' :: MonadThrow m
=> PVP
-> [(PVP, Text, Maybe Text)] -- ^ installed GHCs
-> Maybe Text -- ^ the target triple
-> m (Maybe GHCTargetVersion)
getGHCForPVP' pvpIn ghcs' mt = do
let mResult = lastMay
. sortBy (\(x, _, _) (y, _, _) -> compare x y)
. filter
(\(pvp_, _, target) ->
target == mt && matchPVPrefix pvp_ pvpIn
)
$ ghcs'
forM mResult $ \(pvp_, rest, target) -> do
ver' <- pvpToVersion pvp_ rest
pure (GHCTargetVersion target ver')
-- | Get the latest available ghc for the given PVP version, which
-- may only contain parts.
--
-- >>> (fmap . fmap) (\(p, _, _) -> p) $ getLatestToolFor GHC Nothing [pver|8|] r
-- Just (PVP {_pComponents = 8 :| [10,7]})
-- >>> (fmap . fmap) (\(p, _, _) -> p) $ getLatestToolFor GHC Nothing [pver|8.8|] r
-- Just (PVP {_pComponents = 8 :| [8,4]})
-- >>> (fmap . fmap) (\(p, _, _) -> p) $ getLatestToolFor GHC Nothing [pver|8.8.4|] r
-- Just (PVP {_pComponents = 8 :| [8,4]})
getLatestToolFor :: MonadThrow m
=> Tool
-> Maybe Text
-> PVP
-> GHCupDownloads
-> m (Maybe (PVP, VersionInfo, Maybe Text))
getLatestToolFor tool target pvpIn dls = do
let ls :: [(GHCTargetVersion, VersionInfo)]
ls = fromMaybe [] $ preview (ix tool % to Map.toDescList) dls
let ps :: [((PVP, Text), VersionInfo, Maybe Text)]
ps = catMaybes $ fmap (\(v, vi) -> (,vi, _tvTarget v) <$> versionToPVP (_tvVersion v)) ls
pure . fmap (\((pv', _), vi, mt) -> (pv', vi, mt)) . headMay . filter (\((v, _), _, t) -> matchPVPrefix pvpIn v && t == target) $ ps
------------
--[ Tags ]--
------------
-- | Get the tool version that has this tag. If multiple have it,
-- picks the greatest version.
getTagged :: Tag
-> Fold (Map.Map GHCTargetVersion VersionInfo) (GHCTargetVersion, VersionInfo)
getTagged tag =
to (Map.toDescList . Map.filter (\VersionInfo {..} -> tag `elem` _viTags))
% folding id
getByReleaseDay :: GHCupDownloads -> Tool -> Day -> Either (Maybe Day) (GHCTargetVersion, VersionInfo)
getByReleaseDay av tool day = let mvv = fromMaybe mempty $ headOf (ix tool) av
mdv = Map.foldrWithKey (\k vi@VersionInfo{..} m ->
maybe m (\d -> let diff = diffDays d day
in Map.insert (abs diff) (diff, (k, vi)) m) _viReleaseDay)
Map.empty mvv
in case headMay (Map.toAscList mdv) of
Nothing -> Left Nothing
Just (absDiff, (diff, (k, vi)))
| absDiff == 0 -> Right (k, vi)
| otherwise -> Left (Just (addDays diff day))
getByReleaseDayFold :: Day -> Fold (Map.Map GHCTargetVersion VersionInfo) (GHCTargetVersion, VersionInfo)
getByReleaseDayFold day = to (Map.toDescList . Map.filter (\VersionInfo {..} -> Just day == _viReleaseDay)) % folding id
getLatest :: GHCupDownloads -> Tool -> Maybe (GHCTargetVersion, VersionInfo)
getLatest av tool = headOf (ix tool % getTagged Latest) av
getLatestPrerelease :: GHCupDownloads -> Tool -> Maybe (GHCTargetVersion, VersionInfo)
getLatestPrerelease av tool = headOf (ix tool % getTagged LatestPrerelease) av
getLatestNightly :: GHCupDownloads -> Tool -> Maybe (GHCTargetVersion, VersionInfo)
getLatestNightly av tool = headOf (ix tool % getTagged LatestNightly) av
getRecommended :: GHCupDownloads -> Tool -> Maybe (GHCTargetVersion, VersionInfo)
getRecommended av tool = headOf (ix tool % getTagged Recommended) av
-- | Gets the latest GHC with a given base version.
getLatestBaseVersion :: GHCupDownloads -> PVP -> Maybe (GHCTargetVersion, VersionInfo)
getLatestBaseVersion av pvpVer =
headOf (ix GHC % getTagged (Base pvpVer)) av
-------------
--[ Other ]--
-------------
intoSubdir :: (MonadReader env m, HasLog env, MonadIO m, MonadThrow m, MonadCatch m)
=> GHCupPath -- ^ unpacked tar dir
-> TarDir -- ^ how to descend
-> Excepts '[TarDirDoesNotExist] m GHCupPath
intoSubdir bdir tardir = case tardir of
RealDir pr -> do
whenM (fmap not . liftIO . doesDirectoryExist $ fromGHCupPath (bdir `appendGHCupPath` pr))
(throwE $ TarDirDoesNotExist tardir)
pure (bdir `appendGHCupPath` pr)
RegexDir r -> do
let rs = split (`elem` pathSeparators) r
foldlM
(\y x ->
(handleIO (\_ -> pure []) . liftIO . findFiles (fromGHCupPath y) . regex $ x) >>= (\case
[] -> throwE $ TarDirDoesNotExist tardir
(p : _) -> pure (y `appendGHCupPath` p)) . sort
)
bdir
rs
where regex = makeRegexOpts compIgnoreCase execBlank
-- | Usually @~\/.ghcup\/ghc\/\<ver\>\/bin\/@
ghcInternalBinDir :: (MonadReader env m, HasDirs env, MonadThrow m, MonadFail m, MonadIO m)
=> GHCTargetVersion
-> m FilePath
ghcInternalBinDir ver = do
ghcdir <- fromGHCupPath <$> ghcupGHCDir ver
pure (ghcdir </> "bin")
-- | Get tool files from @~\/.ghcup\/ghc\/\<ver\>\/bin\/\*@
-- while ignoring @*-\<ver\>@ symlinks and accounting for cross triple prefix.
--
-- Returns unversioned relative files without extension, e.g.:
--
-- - @["hsc2hs","haddock","hpc","runhaskell","ghc","ghc-pkg","ghci","runghc","hp2ps"]@
ghcToolFiles :: (MonadReader env m, HasDirs env, MonadThrow m, MonadFail m, MonadIO m)
=> GHCTargetVersion
-> Excepts '[NotInstalled] m [FilePath]
ghcToolFiles ver = do
bindir <- ghcInternalBinDir ver
-- fail if ghc is not installed
whenM (fmap not $ ghcInstalled ver)
(throwE (NotInstalled GHC ver))
files <- liftIO (listDirectoryFiles bindir >>= filterM (doesFileExist . (bindir </>)))
pure (getUniqueTools . groupToolFiles . fmap (dropSuffix exeExt) $ files)
where
groupToolFiles :: [FilePath] -> [[(FilePath, String)]]
groupToolFiles = groupBy (\(a, _) (b, _) -> a == b) . fmap (splitOnPVP "-")
getUniqueTools :: [[(FilePath, String)]] -> [String]
getUniqueTools = filter (isNotAnyInfix blackListedTools) . nub . fmap fst . concatMap (filter ((== "") . snd))
blackListedTools :: [String]
blackListedTools = ["haddock-ghc"]
isNotAnyInfix :: [String] -> String -> Bool
isNotAnyInfix xs t = foldr (\a b -> not (a `isInfixOf` t) && b) True xs
-- | Calls gmake if it exists in PATH, otherwise make.
make :: ( MonadThrow m
, MonadIO m
, MonadReader env m
, HasDirs env
, HasLog env
, HasSettings env
)
=> [String]
-> Maybe FilePath
-> m (Either ProcessError ())
make args workdir = make' args workdir "ghc-make" Nothing
-- | Calls gmake if it exists in PATH, otherwise make.
make' :: ( MonadThrow m
, MonadIO m
, MonadReader env m
, HasDirs env
, HasLog env
, HasSettings env
)
=> [String]
-> Maybe FilePath
-> FilePath -- ^ log filename (opened in append mode)
-> Maybe [(String, String)] -- ^ optional environment
-> m (Either ProcessError ())
make' args workdir logfile menv = do
spaths <- liftIO getSearchPath
has_gmake <- isJust <$> liftIO (searchPath spaths "gmake")
let mymake = if has_gmake then "gmake" else "make"
execLogged mymake args workdir logfile menv
makeOut :: (MonadReader env m, HasDirs env, MonadIO m)
=> [String]
-> Maybe FilePath
-> m CapturedProcess
makeOut args workdir = do
spaths <- liftIO getSearchPath
has_gmake <- isJust <$> liftIO (searchPath spaths "gmake")
let mymake = if has_gmake then "gmake" else "make"
executeOut mymake args workdir
-- | Try to apply patches in order. The order is determined by
-- a quilt series file (in the patch directory) if one exists,
-- else the patches are applied in lexicographical order.
-- Fails with 'PatchFailed' on first failure.
applyPatches :: (MonadReader env m, HasDirs env, HasLog env, MonadIO m)
=> FilePath -- ^ dir containing patches
-> FilePath -- ^ dir to apply patches in
-> Excepts '[PatchFailed] m ()
applyPatches pdir ddir = do
let lexicographical = (fmap . fmap) (pdir </>) $ sort <$> findFiles
pdir
(makeRegexOpts compExtended
execBlank
([s|.+\.(patch|diff)$|] :: ByteString)
)
let quilt = map (pdir </>) . lines <$> readFile (pdir </> "series")
patches <- liftIO $ quilt `catchIO` (\e ->
if isDoesNotExistError e || isPermissionError e then
lexicographical
else throwIO e)
forM_ patches $ \patch' -> applyPatch patch' ddir
applyPatch :: (MonadReader env m, HasDirs env, HasLog env, MonadIO m)
=> FilePath -- ^ Patch
-> FilePath -- ^ dir to apply patches in
-> Excepts '[PatchFailed] m ()
applyPatch patch ddir = do
lift $ logInfo $ "Applying patch " <> T.pack patch
fmap (either (const Nothing) Just)
(exec
"patch"
["-p1", "-s", "-f", "-i", patch]
(Just ddir)
Nothing)
!? PatchFailed
applyAnyPatch :: ( MonadReader env m
, HasDirs env
, HasLog env
, HasSettings env
, MonadUnliftIO m
, MonadCatch m
, MonadResource m
, MonadThrow m
, MonadMask m
, MonadIO m)
=> Maybe (Either FilePath [URI])
-> FilePath
-> Excepts '[PatchFailed, DownloadFailed, DigestError, ContentLengthError, GPGError] m ()
applyAnyPatch Nothing _ = pure ()
applyAnyPatch (Just (Left pdir)) workdir = liftE $ applyPatches pdir workdir
applyAnyPatch (Just (Right uris)) workdir = do
tmpUnpack <- fromGHCupPath <$> lift withGHCupTmpDir
forM_ uris $ \uri -> do
patch <- liftE $ download uri Nothing Nothing Nothing tmpUnpack Nothing False
liftE $ applyPatch patch workdir
-- | https://gitlab.haskell.org/ghc/ghc/-/issues/17353
darwinNotarization :: (MonadReader env m, HasDirs env, MonadIO m)
=> Platform
-> FilePath
-> m (Either ProcessError ())
darwinNotarization Darwin path = exec
"/usr/bin/xattr"
["-r", "-d", "com.apple.quarantine", path]
Nothing
Nothing
darwinNotarization _ _ = pure $ Right ()
getChangeLog :: GHCupDownloads -> Tool -> ToolVersion -> Maybe URI
getChangeLog dls tool (GHCVersion v') =
preview (ix tool % ix v' % viChangeLog % _Just) dls
getChangeLog dls tool (ToolVersion (mkTVer -> v')) =
preview (ix tool % ix v' % viChangeLog % _Just) dls
getChangeLog dls tool (ToolTag tag) =
preview (ix tool % pre (getTagged tag) % to snd % viChangeLog % _Just) dls
getChangeLog dls tool (ToolDay day) =
preview (ix tool % pre (getByReleaseDayFold day) % to snd % viChangeLog % _Just) dls
-- | Execute a build action while potentially cleaning up:
--
-- 1. the build directory, depending on the KeepDirs setting
runBuildAction :: ( MonadReader env m
, HasDirs env
, HasSettings env
, MonadIO m
, MonadMask m
, HasLog env
, MonadUnliftIO m
, MonadFail m
, MonadCatch m
)
=> GHCupPath -- ^ build directory (cleaned up depending on Settings)
-> Excepts e m a
-> Excepts e m a
runBuildAction bdir action = do
Settings {..} <- lift getSettings
let exAction = do
when (keepDirs == Never)
$ rmBDir bdir
v <-
flip onException (lift exAction)
$ onE_ exAction action
when (keepDirs == Never || keepDirs == Errors) $ lift $ rmBDir bdir
pure v
-- | Clean up the given directory if the action fails,
-- depending on the Settings.
cleanUpOnError :: forall e m a env .
( MonadReader env m
, HasDirs env
, HasSettings env
, MonadIO m
, MonadMask m
, HasLog env
, MonadUnliftIO m
, MonadFail m
, MonadCatch m
)
=> GHCupPath -- ^ build directory (cleaned up depending on Settings)
-> Excepts e m a
-> Excepts e m a
cleanUpOnError bdir action = do
Settings {..} <- lift getSettings
let exAction = when (keepDirs == Never) $ rmBDir bdir
flip onException (lift exAction) $ onE_ exAction action
-- | Clean up the given directory if the action fails,
-- depending on the Settings.
cleanFinally :: ( MonadReader env m
, HasDirs env
, HasSettings env
, MonadIO m
, MonadMask m
, HasLog env
, MonadUnliftIO m
, MonadFail m
, MonadCatch m
)
=> GHCupPath -- ^ build directory (cleaned up depending on Settings)
-> Excepts e m a
-> Excepts e m a
cleanFinally bdir action = do
Settings {..} <- lift getSettings
let exAction = when (keepDirs == Never) $ rmBDir bdir
flip finally (lift exAction) $ onE_ exAction action
-- | Remove a build directory, ignoring if it doesn't exist and gracefully
-- printing other errors without crashing.
rmBDir :: (MonadReader env m, HasLog env, MonadUnliftIO m, MonadIO m) => GHCupPath -> m ()
rmBDir dir = withRunInIO (\run -> run $
liftIO $ handleIO (\e -> run $ logWarn $
"Couldn't remove build dir " <> T.pack (fromGHCupPath dir) <> ", error was: " <> T.pack (displayException e))
$ hideError doesNotExistErrorType
$ rmPathForcibly dir)
getVersionInfo :: GHCTargetVersion
-> Tool
-> GHCupDownloads
-> Maybe VersionInfo
getVersionInfo v' tool =
headOf
( ix tool
% to (Map.filterWithKey (\k _ -> k == v'))
% to Map.elems
% _head
)
ensureShimGen :: ( MonadMask m
, MonadThrow m
, HasLog env
, MonadIO m
, MonadReader env m
, HasDirs env
, HasSettings env
, HasGHCupInfo env
, MonadUnliftIO m
, MonadFail m
)
=> Excepts '[GPGError, DigestError, ContentLengthError, DownloadFailed, NoDownload] m ()
ensureShimGen
| isWindows = do
dirs <- lift getDirs
let shimDownload = DownloadInfo shimGenURL Nothing shimGenSHA Nothing Nothing
let dl = downloadCached' shimDownload (Just "gs.exe") Nothing
void $ (\DigestError{} -> do
lift $ logWarn "Digest doesn't match, redownloading gs.exe..."
lift $ logDebug ("rm -f " <> T.pack (fromGHCupPath (cacheDir dirs) </> "gs.exe"))
lift $ hideError doesNotExistErrorType $ recycleFile (fromGHCupPath (cacheDir dirs) </> "gs.exe")
liftE @'[GPGError, DigestError, ContentLengthError, DownloadFailed] $ dl
) `catchE` liftE @'[GPGError, DigestError, ContentLengthError, DownloadFailed] dl
| otherwise = pure ()
-- | Ensure ghcup directory structure exists.
ensureDirectories :: Dirs -> IO ()
ensureDirectories (Dirs baseDir binDir cacheDir logsDir confDir trashDir dbDir tmpDir) = do
createDirRecursive' (fromGHCupPath baseDir)
createDirRecursive' (fromGHCupPath baseDir </> "ghc")
createDirRecursive' (fromGHCupPath baseDir </> "hls")
createDirRecursive' binDir
createDirRecursive' (fromGHCupPath cacheDir)
createDirRecursive' (fromGHCupPath logsDir)
createDirRecursive' (fromGHCupPath confDir)
createDirRecursive' (fromGHCupPath trashDir)
createDirRecursive' (fromGHCupPath dbDir)
createDirRecursive' (fromGHCupPath tmpDir)
pure ()
-- | For ghc without arch triple, this is:
--
-- - ghc
--
-- For ghc with arch triple:
--
-- - <triple>-ghc (e.g. arm-linux-gnueabihf-ghc)
ghcBinaryName :: GHCTargetVersion -> String
ghcBinaryName (GHCTargetVersion (Just t) _) = T.unpack (t <> "-ghc" <> T.pack exeExt)
ghcBinaryName (GHCTargetVersion Nothing _) = T.unpack ("ghc" <> T.pack exeExt)
-- | Does basic checks for isolated installs
-- Isolated Directory:
-- 1. if it doesn't exist -> proceed
-- 2. if it exists and is empty -> proceed
-- 3. if it exists and is non-empty -> panic and leave the house
installDestSanityCheck :: ( MonadIO m
, MonadCatch m
, MonadMask m
) =>
InstallDirResolved ->
Excepts '[DirNotEmpty] m ()
installDestSanityCheck (IsolateDirResolved isoDir) = do
hideErrorDef [doesNotExistErrorType] () $ do
empty' <- liftIO $ S.null $ getDirectoryContentsRecursiveUnsafe isoDir
when (not empty') (throwE $ DirNotEmpty isoDir)
installDestSanityCheck _ = pure ()
-- | Returns 'Nothing' for legacy installs.
getInstalledFiles :: ( MonadIO m
, MonadCatch m
, MonadReader env m
, HasDirs env
, MonadFail m
)
=> Tool
-> GHCTargetVersion
-> m (Maybe [FilePath])
getInstalledFiles t v' = hideErrorDef [doesNotExistErrorType] Nothing $ do
f <- recordedInstallationFile t v'
(force -> !c) <- liftIO
(readFile f >>= evaluate)
pure (Just $ lines c)
-- | Warn if the installed and set HLS is not compatible with the installed and
-- set GHC version.
warnAboutHlsCompatibility :: ( MonadReader env m
, HasDirs env
, HasLog env
, MonadThrow m
, MonadCatch m
, MonadIO m
)
=> m ()
warnAboutHlsCompatibility = do
supportedGHC <- hlsGHCVersions
currentGHC <- fmap _tvVersion <$> ghcSet Nothing
currentHLS <- hlsSet
case (currentGHC, currentHLS) of
(Just gv, Just hv) | gv `notElem` supportedGHC -> do
logWarn $
"GHC-" <> T.pack (prettyShow gv) <> " appears to have no corresponding HLS-" <> T.pack (prettyShow hv) <> " binary." <> "\n" <>
"Haskell IDE support may not work." <> "\n" <>
"You can try to either: " <> "\n" <>
" 1. Install a different HLS version (e.g. downgrade for older GHCs)" <> "\n" <>
" 2. Install and set one of the following GHCs: " <> T.pack (prettyShow supportedGHC) <> "\n" <>
" 3. Let GHCup compile HLS for you, e.g. run: ghcup compile hls -g " <> T.pack (prettyShow hv) <> " --ghc " <> T.pack (prettyShow gv) <> " --cabal-update\n" <>
" (see https://www.haskell.org/ghcup/guide/#hls for more information)"
_ -> return ()
-----------
--[ Git ]--
-----------
isCommitHash :: String -> Bool
isCommitHash str' = let hex = all isHexDigit str'
len = length str'
in hex && len == 40
gitOut :: (MonadReader env m, HasLog env, MonadIO m) => [String] -> FilePath -> Excepts '[ProcessError] m T.Text
gitOut args dir = do
CapturedProcess {..} <- lift $ executeOut "git" args (Just dir)
case _exitCode of
ExitSuccess -> pure $ T.pack $ stripNewlineEnd $ T.unpack $ decUTF8Safe' _stdOut
ExitFailure c -> do
let pe = NonZeroExit c "git" args
lift $ logDebug $ T.pack (prettyHFError pe)
throwE pe
processBranches :: T.Text -> [String]
processBranches str' = let lines' = lines (T.unpack str')
words' = fmap words lines'
refs = catMaybes $ fmap (`atMay` 1) words'
branches = catMaybes $ fmap (stripPrefix "refs/heads/") $ filter (isPrefixOf "refs/heads/") refs
in branches