{-# LANGUAGE CPP #-}
{-# LANGUAGE BangPatterns #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE QuasiQuotes #-}
{-|
Module : GHCup.HLS
Description : GHCup installation functions for HLS
Copyright : (c) Julian Ospald, 2020
License : LGPL-3.0
Maintainer : hasufell@hasufell.de
Stability : experimental
Portability : portable
-}
module GHCup.HLS where
import GHCup.Download
import GHCup.Errors
import GHCup.Types
import GHCup.Types.JSON ( )
import GHCup.Types.Optics
import GHCup.Utils
import GHCup.Prelude
import GHCup.Prelude.File
import GHCup.Prelude.Logger
import GHCup.Prelude.Process
import GHCup.Prelude.String.QQ
import Codec.Archive ( ArchiveResult )
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 Data.ByteString ( ByteString )
import Data.Either
import Data.List
import Data.Maybe
import Data.String ( fromString )
import Data.Text ( Text )
import Data.Versions hiding ( patch )
import Distribution.Types.Version hiding ( Version )
import Distribution.Types.PackageId
import Distribution.Types.PackageDescription
import Distribution.Types.GenericPackageDescription
import Distribution.PackageDescription.Parsec
import GHC.IO.Exception
import Haskus.Utils.Variant.Excepts
import Optics
import Prelude hiding ( abs
, writeFile
)
import Safe hiding ( at )
import System.FilePath
import System.IO.Error
import Text.Regex.Posix
import URI.ByteString
import qualified Data.List.NonEmpty as NE
import qualified Data.ByteString as B
import qualified Data.Text as T
import qualified Text.Megaparsec as MP
import Text.PrettyPrint.HughesPJClass (prettyShow)
data HLSVer = SourceDist Version
| GitDist GitBranch
| HackageDist Version
| RemoteDist URI
--------------------
--[ Installation ]--
--------------------
-- | Like 'installHLSBin, except takes the 'DownloadInfo' as
-- argument instead of looking it up from 'GHCupDownloads'.
installHLSBindist :: ( MonadMask m
, MonadCatch m
, MonadReader env m
, HasPlatformReq env
, HasDirs env
, HasSettings env
, HasLog env
, MonadResource m
, MonadIO m
, MonadUnliftIO m
, MonadFail m
)
=> DownloadInfo
-> Version
-> InstallDir -- ^ isolated install path, if user passed any
-> Bool -- ^ Force install
-> Excepts
'[ AlreadyInstalled
, CopyError
, DigestError
, GPGError
, DownloadFailed
, NoDownload
, NotInstalled
, UnknownArchive
, TarDirDoesNotExist
, ArchiveResult
, FileAlreadyExistsError
, ProcessError
, DirNotEmpty
, UninstallFailed
, MergeFileTreeError
]
m
()
installHLSBindist dlinfo ver installDir forceInstall = do
lift $ logDebug $ "Requested to install hls version " <> prettyVer ver
PlatformRequest {..} <- lift getPlatformReq
Dirs {..} <- lift getDirs
regularHLSInstalled <- lift $ hlsInstalled ver
if
| not forceInstall
, regularHLSInstalled
, GHCupInternal <- installDir -> do -- regular install
throwE $ AlreadyInstalled HLS ver
| forceInstall
, regularHLSInstalled
, GHCupInternal <- installDir -> do -- regular forced install
lift $ logInfo "Removing the currently installed version of HLS before force installing!"
liftE $ rmHLSVer ver
| otherwise -> pure ()
-- download (or use cached version)
dl <- liftE $ downloadCached dlinfo Nothing
-- unpack
tmpUnpack <- lift withGHCupTmpDir
liftE $ cleanUpOnError tmpUnpack (unpackToDir (fromGHCupPath tmpUnpack) dl)
liftE $ catchWarn $ lEM @_ @'[ProcessError] $ darwinNotarization _rPlatform (fromGHCupPath tmpUnpack)
-- the subdir of the archive where we do the work
workdir <- fromGHCupPath <$> maybe (pure tmpUnpack) (liftE . intoSubdir tmpUnpack) (view dlSubdir dlinfo)
legacy <- liftIO $ isLegacyHLSBindist workdir
if
| not forceInstall
, not legacy
, (IsolateDir fp) <- installDir -> liftE $ installDestSanityCheck (IsolateDirResolved fp)
| otherwise -> pure ()
case installDir of
IsolateDir isoDir -> do
lift $ logInfo $ "isolated installing HLS to " <> T.pack isoDir
if legacy
then liftE $ installHLSUnpackedLegacy workdir (IsolateDirResolved isoDir) ver forceInstall
else liftE $ runBuildAction tmpUnpack $ installHLSUnpacked workdir (IsolateDirResolved isoDir) ver forceInstall
GHCupInternal -> do
if legacy
then liftE $ installHLSUnpackedLegacy workdir (GHCupBinDir binDir) ver forceInstall
else do
inst <- ghcupHLSDir ver
liftE $ runBuildAction tmpUnpack
$ installHLSUnpacked workdir (GHCupDir inst) ver forceInstall
liftE $ setHLS ver SetHLS_XYZ Nothing
isLegacyHLSBindist :: FilePath -- ^ Path to the unpacked hls bindist
-> IO Bool
isLegacyHLSBindist path = do
not <$> doesFileExist (path </> "GNUmakefile")
-- | Install an unpacked hls distribution.
installHLSUnpacked :: ( MonadMask m
, MonadUnliftIO m
, MonadReader env m
, MonadFail m
, HasLog env
, HasDirs env
, HasSettings env
, MonadCatch m
, MonadIO m
, MonadResource m
, HasPlatformReq env
)
=> FilePath -- ^ Path to the unpacked hls bindist (where the executable resides)
-> InstallDirResolved -- ^ Path to install to
-> Version
-> Bool
-> Excepts '[ProcessError, CopyError, FileAlreadyExistsError, NotInstalled, MergeFileTreeError] m ()
installHLSUnpacked path inst ver forceInstall = do
PlatformRequest { .. } <- lift getPlatformReq
lift $ logInfo "Installing HLS"
tmpInstallDest <- lift withGHCupTmpDir
lEM $ make ["DESTDIR=" <> fromGHCupPath tmpInstallDest, "PREFIX=" <> fromInstallDir inst, "install"] (Just path)
liftE $ catchWarn $ lEM @_ @'[ProcessError] $ darwinNotarization _rPlatform (fromGHCupPath tmpInstallDest)
liftE $ mergeFileTree (tmpInstallDest `appendGHCupPath` dropDrive (fromInstallDir inst))
inst
HLS
(mkTVer ver)
(\f t -> liftIO $ do
mtime <- ifM (pathIsSymbolicLink f) (pure Nothing) (Just <$> getModificationTime f)
install f t (not forceInstall)
forM_ mtime $ setModificationTime t)
-- | Install an unpacked hls distribution (legacy).
installHLSUnpackedLegacy :: (MonadReader env m, MonadFail m, HasLog env, MonadCatch m, MonadIO m)
=> FilePath -- ^ Path to the unpacked hls bindist (where the executable resides)
-> InstallDirResolved -- ^ Path to install to
-> Version
-> Bool -- ^ is it a force install
-> Excepts '[CopyError, FileAlreadyExistsError] m ()
installHLSUnpackedLegacy path installDir ver forceInstall = do
lift $ logInfo "Installing HLS"
liftIO $ createDirRecursive' (fromInstallDir installDir)
-- install haskell-language-server-<ghcver>
bins@(_:_) <- liftIO $ findFiles
path
(makeRegexOpts compExtended
execBlank
([s|^haskell-language-server-[0-9].*$|] :: ByteString)
)
forM_ bins $ \f -> do
let toF = dropSuffix exeExt f
<> (case installDir of
IsolateDirResolved _ -> ""
_ -> ("~" <>) . T.unpack . prettyVer $ ver
)
<> exeExt
let srcPath = path </> f
let destPath = fromInstallDir installDir </> toF
-- destination could be an existing symlink
-- for new make-based HLSes
liftIO $ rmFileForce destPath
copyFileE
srcPath
destPath
(not forceInstall)
lift $ chmod_755 destPath
-- install haskell-language-server-wrapper
let wrapper = "haskell-language-server-wrapper"
toF = wrapper
<> (case installDir of
IsolateDirResolved _ -> ""
_ -> ("-" <>) . T.unpack . prettyVer $ ver
)
<> exeExt
srcWrapperPath = path </> wrapper <> exeExt
destWrapperPath = fromInstallDir installDir </> toF
liftIO $ rmFileForce destWrapperPath
copyFileE
srcWrapperPath
destWrapperPath
(not forceInstall)
lift $ chmod_755 destWrapperPath
-- | Installs hls binaries @haskell-language-server-\<ghcver\>@
-- into @~\/.ghcup\/bin/@, as well as @haskell-languager-server-wrapper@.
installHLSBin :: ( MonadMask m
, MonadCatch m
, MonadReader env m
, HasPlatformReq env
, HasGHCupInfo env
, HasDirs env
, HasSettings env
, HasLog env
, MonadResource m
, MonadIO m
, MonadUnliftIO m
, MonadFail m
)
=> Version
-> InstallDir
-> Bool -- force install
-> Excepts
'[ AlreadyInstalled
, CopyError
, DigestError
, GPGError
, DownloadFailed
, NoDownload
, NotInstalled
, UnknownArchive
, TarDirDoesNotExist
, ArchiveResult
, FileAlreadyExistsError
, ProcessError
, DirNotEmpty
, UninstallFailed
, MergeFileTreeError
]
m
()
installHLSBin ver installDir forceInstall = do
dlinfo <- liftE $ getDownloadInfo HLS ver
installHLSBindist dlinfo ver installDir forceInstall
compileHLS :: ( MonadMask m
, MonadCatch m
, MonadReader env m
, HasDirs env
, HasSettings env
, HasPlatformReq env
, HasGHCupInfo env
, HasLog env
, MonadResource m
, MonadIO m
, MonadUnliftIO m
, MonadFail m
)
=> HLSVer
-> [Version]
-> Maybe Int
-> Either Bool Version
-> InstallDir
-> Maybe (Either FilePath URI)
-> Maybe URI
-> Bool
-> Maybe (Either FilePath [URI]) -- ^ patches
-> [Text] -- ^ additional args to cabal install
-> Excepts '[ NoDownload
, GPGError
, DownloadFailed
, DigestError
, UnknownArchive
, TarDirDoesNotExist
, ArchiveResult
, BuildFailed
, NotInstalled
] m Version
compileHLS targetHLS ghcs jobs ov installDir cabalProject cabalProjectLocal updateCabal patches cabalArgs = do
PlatformRequest { .. } <- lift getPlatformReq
GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
Dirs { .. } <- lift getDirs
when updateCabal $ reThrowAll @_ @'[ProcessError] DownloadFailed $ do
lift $ logInfo "Updating cabal DB"
lEM $ exec "cabal" ["update"] (Just $ fromGHCupPath tmpDir) Nothing
(workdir, tmpUnpack, tver, git_describe) <- case targetHLS of
-- unpack from version tarball
SourceDist tver -> do
lift $ logDebug $ "Requested to compile: " <> prettyVer tver
-- download source tarball
dlInfo <-
preview (ix HLS % ix tver % viSourceDL % _Just) dls
?? NoDownload
dl <- liftE $ downloadCached dlInfo Nothing
-- unpack
tmpUnpack <- lift mkGhcupTmpDir
liftE $ cleanUpOnError tmpUnpack (unpackToDir (fromGHCupPath tmpUnpack) dl)
liftE $ catchWarn $ lEM @_ @'[ProcessError] $ darwinNotarization _rPlatform (fromGHCupPath tmpUnpack)
workdir <- maybe (pure tmpUnpack)
(liftE . intoSubdir tmpUnpack)
(view dlSubdir dlInfo)
pure (workdir, tmpUnpack, tver, Nothing)
HackageDist tver -> do
lift $ logDebug $ "Requested to compile (from hackage): " <> prettyVer tver
-- download source tarball
tmpUnpack <- lift mkGhcupTmpDir
let hls = "haskell-language-server-" <> T.unpack (prettyVer tver)
reThrowAll @_ @'[ProcessError] DownloadFailed $ do
-- unpack
lEM $ exec "cabal" ["unpack", hls] (Just $ fromGHCupPath tmpUnpack) Nothing
let workdir = appendGHCupPath tmpUnpack hls
pure (workdir, tmpUnpack, tver, Nothing)
RemoteDist uri -> do
lift $ logDebug $ "Requested to compile (from uri): " <> T.pack (show uri)
-- download source tarball
tmpDownload <- lift withGHCupTmpDir
tmpUnpack <- lift mkGhcupTmpDir
tar <- liftE $ download uri Nothing Nothing (fromGHCupPath tmpDownload) Nothing False
(cf, tver) <- liftE $ cleanUpOnError tmpUnpack $ do
unpackToDir (fromGHCupPath tmpUnpack) tar
let regex = [s|^(.*/)*haskell-language-server\.cabal$|] :: B.ByteString
[cabalFile] <- liftIO $ findFilesDeep
tmpUnpack
(makeRegexOpts compExtended
execBlank
regex
)
tver <- getCabalVersion (fromGHCupPath tmpUnpack </> cabalFile)
pure (cabalFile, tver)
let workdir = appendGHCupPath tmpUnpack (takeDirectory cf)
pure (workdir, tmpUnpack, tver, Nothing)
-- clone from git
GitDist GitBranch{..} -> do
tmpUnpack <- lift mkGhcupTmpDir
let git args = execLogged "git" ("--no-pager":args) (Just $ fromGHCupPath tmpUnpack) "git" Nothing
reThrowAll @_ @'[ProcessError] DownloadFailed $ do
let rep = fromMaybe "https://github.com/haskell/haskell-language-server.git" repo
lift $ logInfo $ "Fetching git repo " <> T.pack rep <> " at ref " <> T.pack ref <> " (this may take a while)"
lEM $ git [ "init" ]
lEM $ git [ "remote"
, "add"
, "origin"
, fromString rep ]
-- figure out if we can do a shallow clone
remoteBranches <- catchE @ProcessError @'[ProcessError] @'[] (\_ -> pure [])
$ fmap processBranches $ gitOut ["ls-remote", "--heads", "origin"] (fromGHCupPath tmpUnpack)
let shallow_clone
| gitDescribeRequested = False
| isCommitHash ref = True
| fromString ref `elem` remoteBranches = True
| otherwise = False
lift $ logDebug $ "Shallow clone: " <> T.pack (show shallow_clone)
-- fetch
let fetch_args
| shallow_clone = ["fetch", "--depth", "1", "--quiet", "origin", fromString ref]
| otherwise = ["fetch", "--tags", "--quiet", "origin" ]
lEM $ git fetch_args
-- checkout
lEM $ git [ "checkout", fromString ref ]
-- gather some info
git_describe <- if shallow_clone
then pure Nothing
else fmap Just $ gitOut ["describe", "--tags"] (fromGHCupPath tmpUnpack)
chash <- gitOut ["rev-parse", "HEAD" ] (fromGHCupPath tmpUnpack)
tver <- getCabalVersion (fromGHCupPath tmpUnpack </> "haskell-language-server.cabal")
liftE $ catchWarn $ lEM @_ @'[ProcessError] $ darwinNotarization _rPlatform (fromGHCupPath tmpUnpack)
lift $ logInfo $ "Examining git ref " <> T.pack ref <> "\n " <>
"HLS version (from cabal file): " <> prettyVer tver <>
(if not shallow_clone then "\n " <> "'git describe' output: " <> fromJust git_describe else mempty) <>
(if isCommitHash ref then mempty else "\n " <> "commit hash: " <> chash)
pure (tmpUnpack, tmpUnpack, tver, git_describe)
-- the version that's installed may differ from the
-- compiled version, so the user can overwrite it
installVer <- case ov of
Left True -> case git_describe of
-- git describe
Just h -> either (fail . displayException) pure . version $ h
-- git describe, but not building from git, lol
Nothing -> pure tver
-- default: use detected version
Left False -> pure tver
-- overwrite version with users value
Right v -> pure v
liftE $ runBuildAction
tmpUnpack
(reThrowAll @_ @'[GPGError, DownloadFailed, DigestError, PatchFailed, ProcessError, FileAlreadyExistsError, CopyError] @'[BuildFailed] (BuildFailed $ fromGHCupPath workdir) $ do
let tmpInstallDir = fromGHCupPath workdir </> "out"
liftIO $ createDirRecursive' tmpInstallDir
-- apply patches
liftE $ applyAnyPatch patches (fromGHCupPath workdir)
-- set up project files
cp <- case cabalProject of
Just (Left cp)
| isAbsolute cp -> do
copyFileE cp (fromGHCupPath workdir </> "cabal.project") False
pure "cabal.project"
| otherwise -> pure (takeFileName cp)
Just (Right uri) -> do
tmpUnpack' <- lift withGHCupTmpDir
cp <- liftE $ download uri Nothing Nothing (fromGHCupPath tmpUnpack') (Just "cabal.project") False
copyFileE cp (fromGHCupPath workdir </> "cabal.project") False
pure "cabal.project"
Nothing
| HackageDist _ <- targetHLS -> do
liftIO $ B.writeFile (fromGHCupPath workdir </> "cabal.project") "packages: ./"
pure "cabal.project"
| RemoteDist _ <- targetHLS -> do
let cabalFile = fromGHCupPath workdir </> "cabal.project"
liftIO $ whenM (not <$> doesFileExist cabalFile) $ B.writeFile cabalFile "packages: ./"
pure "cabal.project"
| otherwise -> pure "cabal.project"
forM_ cabalProjectLocal $ \uri -> do
tmpUnpack' <- lift withGHCupTmpDir
cpl <- liftE $ download uri Nothing Nothing (fromGHCupPath tmpUnpack') (Just (cp <.> "local")) False
copyFileE cpl (fromGHCupPath workdir </> cp <.> "local") False
artifacts <- forM (sort ghcs) $ \ghc -> do
let ghcInstallDir = tmpInstallDir </> T.unpack (prettyVer ghc)
liftIO $ createDirRecursive' tmpInstallDir
lift $ logInfo $ "Building HLS " <> prettyVer installVer <> " for GHC version " <> prettyVer ghc
liftE $ lEM @_ @'[ProcessError] $
execLogged "cabal" ( [ "v2-install"
, "-w"
, "ghc-" <> T.unpack (prettyVer ghc)
, "--install-method=copy"
] ++
maybe [] (\j -> ["--jobs=" <> show j]) jobs ++
[ "--overwrite-policy=always"
, "--disable-profiling"
, "--disable-tests"
, "--installdir=" <> ghcInstallDir
, "--project-file=" <> cp
] ++ fmap T.unpack cabalArgs ++ [
"exe:haskell-language-server"
, "exe:haskell-language-server-wrapper"]
)
(Just $ fromGHCupPath workdir)
"cabal"
Nothing
pure ghcInstallDir
forM_ artifacts $ \artifact -> do
logDebug $ T.pack (show artifact)
liftIO $ renameFile (artifact </> "haskell-language-server" <.> exeExt)
(tmpInstallDir </> "haskell-language-server-" <> takeFileName artifact <.> exeExt)
liftIO $ renameFile (artifact </> "haskell-language-server-wrapper" <.> exeExt)
(tmpInstallDir </> "haskell-language-server-wrapper" <.> exeExt)
case installDir of
IsolateDir isoDir -> do
lift $ logInfo $ "isolated installing HLS to " <> T.pack isoDir
liftE $ installHLSUnpackedLegacy tmpInstallDir (IsolateDirResolved isoDir) installVer True
GHCupInternal -> do
liftE $ installHLSUnpackedLegacy tmpInstallDir (GHCupBinDir binDir) installVer True
)
pure installVer
where
gitDescribeRequested = case ov of
Left b -> b
_ -> False
-----------------
--[ Set/Unset ]--
-----------------
-- | Set the haskell-language-server symlinks.
setHLS :: ( MonadReader env m
, HasDirs env
, HasLog env
, MonadIO m
, MonadMask m
, MonadFail m
, MonadUnliftIO m
)
=> Version
-> SetHLS
-> Maybe FilePath -- if set, signals that we're not operating in ~/.ghcup/bin
-- and don't want mess with other versions
-> Excepts '[NotInstalled] m ()
setHLS ver shls mBinDir = do
whenM (lift $ not <$> hlsInstalled ver) (throwE (NotInstalled HLS (GHCTargetVersion Nothing ver)))
-- symlink destination
binDir <- case mBinDir of
Just x -> pure x
Nothing -> do
Dirs {binDir = f} <- lift getDirs
pure f
-- first delete the old symlinks
when (isNothing mBinDir) $
case shls of
-- not for legacy
SetHLS_XYZ -> liftE $ rmMinorHLSSymlinks ver
-- legacy and new
SetHLSOnly -> liftE rmPlainHLS
case shls of
-- not for legacy
SetHLS_XYZ -> do
bins <- lift $ hlsInternalServerScripts ver Nothing
forM_ bins $ \f -> do
let fname = takeFileName f
destL <- binarySymLinkDestination binDir f
let target = if "haskell-language-server-wrapper" `isPrefixOf` fname
then fname <> "-" <> T.unpack (prettyVer ver) <> exeExt
else fname <> "~" <> T.unpack (prettyVer ver) <> exeExt
lift $ createLink destL (binDir </> target)
-- legacy and new
SetHLSOnly -> do
-- set haskell-language-server-<ghcver> symlinks
bins <- lift $ hlsServerBinaries ver Nothing
when (null bins) $ throwE $ NotInstalled HLS (GHCTargetVersion Nothing ver)
forM_ bins $ \f -> do
let destL = f
let target = (<> exeExt) . head . splitOn "~" $ f
lift $ createLink destL (binDir </> target)
-- set haskell-language-server-wrapper symlink
let destL = "haskell-language-server-wrapper-" <> T.unpack (prettyVer ver) <> exeExt
let wrapper = binDir </> "haskell-language-server-wrapper" <> exeExt
lift $ createLink destL wrapper
when (isNothing mBinDir) $
lift warnAboutHlsCompatibility
liftIO (isShadowed wrapper) >>= \case
Nothing -> pure ()
Just pa -> lift $ logWarn $ T.pack $ prettyShow (ToolShadowed HLS pa wrapper ver)
unsetHLS :: ( MonadMask m
, MonadReader env m
, HasDirs env
, MonadIO m)
=> m ()
unsetHLS = do
Dirs {..} <- getDirs
let wrapper = binDir </> "haskell-language-server-wrapper" <> exeExt
bins <- liftIO $ handleIO (\_ -> pure []) $ findFiles'
binDir
(MP.chunk "haskell-language-server-" <* pvp' <* MP.chunk (T.pack exeExt) <* MP.eof)
forM_ bins (hideError doesNotExistErrorType . rmLink . (binDir </>))
hideError doesNotExistErrorType $ rmLink wrapper
---------------
--[ Removal ]--
---------------
-- | Delete a hls version. Will try to fix the hls symlinks
-- after removal (e.g. setting it to an older version).
rmHLSVer :: ( MonadMask m
, MonadReader env m
, HasDirs env
, MonadThrow m
, HasLog env
, MonadIO m
, MonadFail m
, MonadCatch m
, MonadUnliftIO m
)
=> Version
-> Excepts '[NotInstalled, UninstallFailed] m ()
rmHLSVer ver = do
whenM (lift $ fmap not $ hlsInstalled ver) $ throwE (NotInstalled HLS (GHCTargetVersion Nothing ver))
isHlsSet <- lift hlsSet
liftE $ rmMinorHLSSymlinks ver
when (Just ver == isHlsSet) $ do
-- delete all set symlinks
liftE rmPlainHLS
hlsDir' <- ghcupHLSDir ver
let hlsDir = fromGHCupPath hlsDir'
lift (getInstalledFiles HLS (mkTVer ver)) >>= \case
Just files -> do
lift $ logInfo $ "Removing files safely from: " <> T.pack hlsDir
forM_ files (lift . hideError NoSuchThing . recycleFile . (\f -> hlsDir </> dropDrive f))
removeEmptyDirsRecursive hlsDir
survivors <- liftIO $ hideErrorDef [doesNotExistErrorType] [] $ listDirectory hlsDir
f <- recordedInstallationFile HLS (mkTVer ver)
lift $ recycleFile f
when (not (null survivors)) $ throwE $ UninstallFailed hlsDir survivors
Nothing -> do
isDir <- liftIO $ doesDirectoryExist hlsDir
isSyml <- liftIO $ handleIO (\_ -> pure False) $ pathIsSymbolicLink hlsDir
when (isDir && not isSyml) $ do
lift $ logInfo $ "Removing legacy directory recursively: " <> T.pack hlsDir
recyclePathForcibly hlsDir'
when (Just ver == isHlsSet) $ do
-- set latest hls
hlsVers <- lift $ fmap rights getInstalledHLSs
case headMay . reverse . sort $ hlsVers of
Just latestver -> liftE $ setHLS latestver SetHLSOnly Nothing
Nothing -> pure ()
getCabalVersion :: (MonadIO m, MonadFail m) => FilePath -> m Version
getCabalVersion fp = do
contents <- liftIO $ B.readFile fp
gpd <- case parseGenericPackageDescriptionMaybe contents of
Nothing -> fail $ "could not parse cabal file: " <> fp
Just r -> pure r
let tver = (\c -> Version Nothing c [] Nothing)
. NE.fromList . fmap (NE.fromList . (:[]) . digits . fromIntegral)
. versionNumbers
. pkgVersion
. package
. packageDescription
$ gpd
pure tver