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authorDaniel Gröber <dxld@darkboxed.org>2017-09-28 21:33:24 +0200
committerDaniel Gröber <dxld@darkboxed.org>2017-09-28 21:33:24 +0200
commit4b7b646c4fddb1c368aead0315a1f6ce0784b230 (patch)
tree4726bfeba0074d3db6899466d276aadef5c2ed37 /src/CabalHelper/Compiletime
parent7e79dacef6fbeb1ae7805072f6a04b36d99eab7b (diff)
Move split source into src/ and lib/
Diffstat (limited to 'src/CabalHelper/Compiletime')
-rw-r--r--src/CabalHelper/Compiletime/Compat/Environment.hs6
-rw-r--r--src/CabalHelper/Compiletime/Compat/Version.hs25
-rw-r--r--src/CabalHelper/Compiletime/Compile.hs595
-rw-r--r--src/CabalHelper/Compiletime/Data.hs86
-rw-r--r--src/CabalHelper/Compiletime/GuessGhc.hs92
-rw-r--r--src/CabalHelper/Compiletime/Log.hs44
-rw-r--r--src/CabalHelper/Compiletime/Types.hs40
-rw-r--r--src/CabalHelper/Compiletime/Wrapper.hs164
8 files changed, 1052 insertions, 0 deletions
diff --git a/src/CabalHelper/Compiletime/Compat/Environment.hs b/src/CabalHelper/Compiletime/Compat/Environment.hs
new file mode 100644
index 0000000..916f782
--- /dev/null
+++ b/src/CabalHelper/Compiletime/Compat/Environment.hs
@@ -0,0 +1,6 @@
+module CabalHelper.Compiletime.Compat.Environment where
+
+import System.Environment
+
+lookupEnv :: String -> IO (Maybe String)
+lookupEnv var = do env <- getEnvironment; return (lookup var env)
diff --git a/src/CabalHelper/Compiletime/Compat/Version.hs b/src/CabalHelper/Compiletime/Compat/Version.hs
new file mode 100644
index 0000000..853aca5
--- /dev/null
+++ b/src/CabalHelper/Compiletime/Compat/Version.hs
@@ -0,0 +1,25 @@
+{-# LANGUAGE CPP #-}
+module CabalHelper.Compiletime.Compat.Version
+ ( DataVersion
+ , toDataVersion
+ , fromDataVersion
+ , Data.Version.showVersion
+ ) where
+
+import qualified Data.Version
+import qualified Distribution.Version (Version)
+#if MIN_VERSION_Cabal(2,0,0)
+import qualified Distribution.Version (versionNumbers, mkVersion)
+#endif
+
+type DataVersion = Data.Version.Version
+
+toDataVersion :: Distribution.Version.Version -> Data.Version.Version
+fromDataVersion :: Data.Version.Version -> Distribution.Version.Version
+#if MIN_VERSION_Cabal(2,0,0)
+toDataVersion v = Data.Version.Version (Distribution.Version.versionNumbers v) []
+fromDataVersion (Data.Version.Version vs _) = Distribution.Version.mkVersion vs
+#else
+toDataVersion = id
+fromDataVersion = id
+#endif
diff --git a/src/CabalHelper/Compiletime/Compile.hs b/src/CabalHelper/Compiletime/Compile.hs
new file mode 100644
index 0000000..8cc565e
--- /dev/null
+++ b/src/CabalHelper/Compiletime/Compile.hs
@@ -0,0 +1,595 @@
+-- Copyright (C) 2015,2017 Daniel Gröber <dxld ÄT darkboxed DOT org>
+--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU Affero General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+-- GNU Affero General Public License for more details.
+--
+-- You should have received a copy of the GNU Affero General Public License
+-- along with this program. If not, see <http://www.gnu.org/licenses/>.
+{-# LANGUAGE RecordWildCards, FlexibleContexts #-}
+
+{-|
+Module : CabalHelper.Compiletime.Compile
+Description : Runtime compilation machinery
+License : AGPL-3
+-}
+
+module CabalHelper.Compiletime.Compile where
+
+import Control.Applicative
+import Control.Arrow
+import Control.Exception as E
+import Control.Monad
+import Control.Monad.Trans.Maybe
+import Control.Monad.IO.Class
+import Data.Traversable
+import Data.Char
+import Data.List
+import Data.Maybe
+import Data.String
+import Data.Version
+import GHC.IO.Exception (IOErrorType(OtherError))
+import Text.Printf
+import System.Directory
+import System.FilePath
+import System.Process
+import System.Exit
+import System.IO
+import System.IO.Error
+import System.IO.Temp
+import Prelude
+
+import Distribution.System (buildPlatform)
+import Distribution.Text (display)
+
+import Paths_cabal_helper (version)
+import CabalHelper.Compiletime.Data
+import CabalHelper.Compiletime.Log
+import CabalHelper.Compiletime.Types
+import CabalHelper.Shared.Common
+import CabalHelper.Shared.Sandbox (getSandboxPkgDb)
+
+data Compile = Compile {
+ compCabalSourceDir :: Maybe CabalSourceDir,
+ compPackageDb :: Maybe PackageDbDir,
+ compCabalVersion :: Either String Version,
+ compPackageDeps :: [String]
+ }
+
+compileHelper :: Options -> Version -> FilePath -> FilePath -> IO (Either ExitCode FilePath)
+compileHelper opts cabalVer projdir distdir = do
+ case cabalPkgDb opts of
+ Nothing ->
+ run [ compileCabalSource
+ , Right <$> MaybeT (cachedExe cabalVer)
+ , compileSandbox
+ , compileGlobal
+ , cachedCabalPkg
+ , MaybeT (Just <$> compilePrivatePkgDb)
+ ]
+ mdb ->
+ run [ Right <$> MaybeT (cachedExe cabalVer)
+ , liftIO $ compileWithPkg mdb cabalVer
+ ]
+
+ where
+ run actions = fromJust <$> runMaybeT (msum actions)
+
+ logMsg = "compiling helper with Cabal from "
+
+-- for relaxed deps: find (sameMajorVersionAs cabalVer) . reverse . sort
+
+ -- | Check if this version is globally available
+ compileGlobal :: MaybeT IO (Either ExitCode FilePath)
+ compileGlobal = do
+ ver <- MaybeT $ find (== cabalVer) <$> listCabalVersions opts
+ vLog opts $ logMsg ++ "user/global package-db"
+ liftIO $ compileWithPkg Nothing ver
+
+ -- | Check if this version is available in the project sandbox
+ compileSandbox :: MaybeT IO (Either ExitCode FilePath)
+ compileSandbox = do
+ let ghcVer = ghcVersion opts
+ mdb_path = getSandboxPkgDb projdir (display buildPlatform) =<< ghcVer
+ sandbox <- PackageDbDir <$> MaybeT mdb_path
+ ver <- MaybeT $ logIOError opts "compileSandbox" $
+ find (== cabalVer) <$> listCabalVersions' opts (Just sandbox)
+ vLog opts $ logMsg ++ "sandbox package-db"
+ liftIO $ compileWithPkg (Just sandbox) ver
+
+
+ -- | Check if we already compiled this version of cabal into a private
+ -- package-db
+ cachedCabalPkg :: MaybeT IO (Either ExitCode FilePath)
+ cachedCabalPkg = do
+ db_exists <- liftIO $ cabalVersionExistsInPkgDb opts cabalVer
+ case db_exists of
+ False -> mzero
+ True -> do
+ db@(PackageDbDir db_path)
+ <- liftIO $ getPrivateCabalPkgDb opts (Right cabalVer)
+ vLog opts $ logMsg ++ "private package-db in " ++ db_path
+ liftIO $ compileWithPkg (Just db) cabalVer
+
+ -- | See if we're in a cabal source tree
+ compileCabalSource :: MaybeT IO (Either ExitCode FilePath)
+ compileCabalSource = do
+ let cabalFile = projdir </> "Cabal.cabal"
+ cabalSrc <- liftIO $ doesFileExist cabalFile
+ let projdir' = CabalSourceDir projdir
+ case cabalSrc of
+ False -> mzero
+ True -> liftIO $ do
+ vLog opts $ "directory above distdir looks like cabal source tree (Cabal.cabal exists)"
+ ver <- cabalFileVersion <$> readFile cabalFile
+ vLog opts $ "compiling helper with local Cabal source tree"
+ compileWithCabalTree ver projdir'
+
+ -- | Compile the requested cabal version into an isolated package-db
+ compilePrivatePkgDb :: IO (Either ExitCode FilePath)
+ compilePrivatePkgDb = do
+ db <- fst <$> installCabal opts (Right cabalVer) `E.catch`
+ \(SomeException _) -> errorInstallCabal cabalVer distdir
+ compileWithPkg (Just db) cabalVer
+
+ compileWithCabalTree ver srcDir =
+ compile distdir opts $ Compile {
+ compCabalSourceDir = Just srcDir,
+ compPackageDb = Nothing,
+ compCabalVersion = Right ver,
+ compPackageDeps = []
+ }
+
+ compileWithPkg mdb ver =
+ compile distdir opts $ Compile {
+ compCabalSourceDir = Nothing,
+ compPackageDb = mdb,
+ compCabalVersion = Right ver,
+ compPackageDeps = [cabalPkgId ver]
+ }
+
+ cabalPkgId v = "Cabal-" ++ showVersion v
+
+compile :: FilePath -> Options -> Compile -> IO (Either ExitCode FilePath)
+compile distdir opts@Options {..} Compile {..} = do
+ cnCabalSourceDir
+ <- (canonicalizePath . cabalSourceDir) `traverse` compCabalSourceDir
+ appdir <- appCacheDir
+
+ let (outdir, exedir, exe, mchsrcdir) =
+ case cnCabalSourceDir of
+ Nothing -> ( exeName compCabalVersion <.> "build"
+ , appdir
+ , appdir </> exeName compCabalVersion
+ , Nothing
+ )
+ Just _ -> ( distdir </> "cabal-helper"
+ , distdir
+ , distdir </> "cabal-helper" </> "cabal-helper"
+ , Just $ distdir </> "cabal-helper"
+ )
+
+ createDirectoryIfMissing True outdir
+ createDirectoryIfMissing True exedir
+
+ withHelperSources mchsrcdir $ \compCabalHelperSourceDir -> do
+
+ vLog opts $ "sourcedir: " ++ compCabalHelperSourceDir
+ vLog opts $ "outdir: " ++ outdir
+ vLog opts $ "exe: " ++ exe
+
+ let (mj1:mj2:mi:_) = case compCabalVersion of
+ Left _commitid -> [10000000, 0, 0]
+ Right (Version vs _) -> vs
+ let ghc_opts = concat [
+ [ "-outputdir", outdir
+ , "-o", exe
+ , "-optP-DCABAL_HELPER=1"
+ , "-optP-DCH_MIN_VERSION_Cabal(major1,major2,minor)=(\
+ \ (major1) < "++show mj1++" \
+ \|| (major1) == "++show mj1++" && (major2) < "++show mj2++"\
+ \|| (major1) == "++show mj1++" && (major2) == "++show mj2++" && (minor) <= "++show mi++")"
+ ],
+ maybeToList $ ("-package-conf="++) <$> packageDbDir <$> compPackageDb,
+ map ("-i"++) $ nub $ "":compCabalHelperSourceDir:maybeToList cnCabalSourceDir,
+
+ if isNothing cnCabalSourceDir
+ then [ "-hide-all-packages"
+ , "-package", "base"
+ , "-package", "containers"
+ , "-package", "directory"
+ , "-package", "filepath"
+ , "-package", "process"
+ , "-package", "bytestring"
+ , "-package", "ghc-prim"
+ ]
+ else [],
+
+ concatMap (\p -> ["-package", p]) compPackageDeps,
+ [ "--make"
+ , compCabalHelperSourceDir</>"CabalHelper"</>"Runtime"</>"Main.hs"
+ ]
+ ]
+
+ rv <- callProcessStderr' opts Nothing ghcProgram ghc_opts
+ return $ case rv of
+ ExitSuccess -> Right exe
+ e@(ExitFailure _) -> Left e
+
+exeName :: Either String Version -> String
+exeName (Left commitid) = intercalate "-"
+ [ "cabal-helper" ++ showVersion version -- our ver
+ , "CabalHEAD" ++ commitid
+ ]
+exeName (Right compCabalVersion) = intercalate "-"
+ [ "cabal-helper" ++ showVersion version -- our ver
+ , "Cabal" ++ showVersion compCabalVersion
+ ]
+
+callProcessStderr'
+ :: Options -> Maybe FilePath -> FilePath -> [String] -> IO ExitCode
+callProcessStderr' opts mwd exe args = do
+ let cd = case mwd of
+ Nothing -> []; Just wd -> [ "cd", formatProcessArg wd++";" ]
+ vLog opts $ intercalate " " $ cd ++ map formatProcessArg (exe:args)
+ (_, _, _, h) <- createProcess (proc exe args) { std_out = UseHandle stderr
+ , cwd = mwd }
+ waitForProcess h
+
+callProcessStderr :: Options -> Maybe FilePath -> FilePath -> [String] -> IO ()
+callProcessStderr opts mwd exe args = do
+ rv <- callProcessStderr' opts mwd exe args
+ case rv of
+ ExitSuccess -> return ()
+ ExitFailure v -> processFailedException "callProcessStderr" exe args v
+
+processFailedException :: String -> String -> [String] -> Int -> IO a
+processFailedException fn exe args rv =
+ ioError $ mkIOError OtherError msg Nothing Nothing
+ where
+ msg = concat [ fn, ": ", exe, " "
+ , intercalate " " (map formatProcessArg args)
+ , " (exit " ++ show rv ++ ")"
+ ]
+
+formatProcessArg :: String -> String
+formatProcessArg xs
+ | any isSpace xs = "'"++ xs ++"'"
+ | otherwise = xs
+
+data HEAD = HEAD deriving (Eq, Show)
+
+installCabal :: Options -> Either HEAD Version -> IO (PackageDbDir, Either String Version)
+installCabal opts ever = do
+ appdir <- appCacheDir
+ let message ver = do
+ let sver = showVersion ver
+ hPutStr stderr $ printf "\
+\cabal-helper-wrapper: Installing a private copy of Cabal because we couldn't\n\
+\find the right version in your global/user package-db, this might take a\n\
+\while but will only happen once per Cabal version you're using.\n\
+\\n\
+\If anything goes horribly wrong just delete this directory and try again:\n\
+\ %s\n\
+\\n\
+\If you want to avoid this automatic installation altogether install\n\
+\version %s of Cabal manually (into your user or global package-db):\n\
+\ $ cabal install Cabal --constraint \"Cabal == %s\"\n\
+\\n\
+\Installing Cabal %s ...\n" appdir sver sver sver
+
+ withSystemTempDirectory "cabal-helper-Cabal-source" $ \tmpdir -> do
+ (srcdir, e_commit_ver) <- case ever of
+ Left HEAD -> do
+ second Left <$> unpackCabalHEAD tmpdir
+ Right ver -> do
+ message ver
+ let patch = fromMaybe nopCabalPatchDescription $
+ find ((ver`elem`) . cpdVersions) patchyCabalVersions
+ (,) <$> unpackPatchedCabal opts ver tmpdir patch <*> pure (Right ver)
+
+ db <- createPkgDb opts e_commit_ver
+
+ runCabalInstall opts db srcdir ever
+
+ return (db, e_commit_ver)
+
+{-
+TODO: If the Cabal version we want to install is less than or equal to one we
+have available, either through act-as-setup or in a package-db we should be able
+to use act-as-setup or build a default Setup.hs exe and patch the Cabal source
+to say build-type:simple. This will sidestep bugs in c-i>=1.24
+
+See conversation in
+https://github.com/haskell/cabal/commit/e2bf243300957321497353a2f85517e464f764ab
+
+Otherwise we might be able to use the shipped Setup.hs
+
+-}
+
+runCabalInstall
+ :: Options -> PackageDbDir -> CabalSourceDir -> Either HEAD Version-> IO ()
+runCabalInstall opts (PackageDbDir db) (CabalSourceDir srcdir) ever = do
+ cabalInstallVer <- cabalInstallVersion opts
+ cabal_opts <- return $ concat
+ [
+ [ "--package-db=clear"
+ , "--package-db=global"
+ , "--package-db=" ++ db
+ , "--prefix=" ++ db </> "prefix"
+ ]
+ , cabalOptions opts
+ , if cabalInstallVer >= Version [1,20,0,0] []
+ then ["--no-require-sandbox"]
+ else []
+ , [ "install", srcdir ]
+ , if verbose opts
+ then ["-v"]
+ else []
+ , [ "--only-dependencies" ]
+ ]
+
+ callProcessStderr opts (Just "/") (cabalProgram opts) cabal_opts
+
+ setupProgram <- compileSetupHs opts db srcdir
+ runSetupHs opts setupProgram db srcdir ever
+
+ hPutStrLn stderr "done"
+
+cabalOptions :: Options -> [String]
+cabalOptions opts =
+ concat [ [ "--with-ghc=" ++ ghcProgram opts ]
+ , if ghcPkgProgram opts /= ghcPkgProgram defaultOptions
+ then [ "--with-ghc-pkg=" ++ ghcPkgProgram opts ]
+ else []
+ ]
+
+runSetupHs
+ :: Options
+ -> SetupProgram
+ -> FilePath
+ -> FilePath
+ -> Either HEAD Version
+ -> IO ()
+runSetupHs opts SetupProgram {..} db srcdir ever = do
+ let run = callProcessStderr opts (Just srcdir) setupProgram
+ parmake_opt
+ | Right ver <- ever, ver >= Version [1,20] [] = ["-j"]
+ | otherwise = []
+
+ run $ [ "configure", "--package-db", db, "--prefix", db </> "prefix" ] ++ cabalOptions opts
+ run $ [ "build" ] ++ parmake_opt
+ run [ "copy" ]
+ run [ "register" ]
+
+newtype SetupProgram = SetupProgram { setupProgram :: FilePath }
+compileSetupHs :: Options -> FilePath -> FilePath -> IO SetupProgram
+compileSetupHs opts db srcdir = do
+ ver <- ghcVersion opts
+ let no_version_macros
+ | ver >= Version [8] [] = [ "-fno-version-macros" ]
+ | otherwise = []
+
+ file = srcdir </> "Setup"
+
+ callProcessStderr opts (Just srcdir) (ghcProgram opts) $ concat
+ [ [ "--make"
+ , "-package-conf", db
+ ]
+ , no_version_macros
+ , [ file <.> "hs"
+ , "-o", file
+ ]
+ ]
+ return $ SetupProgram file
+
+data CabalPatchDescription = CabalPatchDescription {
+ cpdVersions :: [Version],
+ cpdUnpackVariant :: UnpackCabalVariant,
+ cpdPatchFn :: FilePath -> IO ()
+ }
+nopCabalPatchDescription :: CabalPatchDescription
+nopCabalPatchDescription = CabalPatchDescription [] LatestRevision (const (return ()))
+
+patchyCabalVersions :: [CabalPatchDescription]
+patchyCabalVersions = [
+ let versions = [ Version [1,18,1] [] ]
+ variant = Pristine
+ patch = fixArrayConstraint
+ in CabalPatchDescription versions variant patch,
+
+ let versions = [ Version [1,18,0] [] ]
+ variant = Pristine
+ patch dir = do
+ fixArrayConstraint dir
+ fixOrphanInstance dir
+ in CabalPatchDescription versions variant patch,
+
+ let versions = [ Version [1,24,1,0] [] ]
+ variant = Pristine
+ patch _ = return ()
+ in CabalPatchDescription versions variant patch
+ ]
+ where
+ fixArrayConstraint dir = do
+ let cabalFile = dir </> "Cabal.cabal"
+ cabalFileTmp = cabalFile ++ ".tmp"
+
+ cf <- readFile cabalFile
+ writeFile cabalFileTmp $ replace "&& < 0.5" "&& < 0.6" cf
+ renameFile cabalFileTmp cabalFile
+
+ fixOrphanInstance dir = do
+ let versionFile = dir </> "Distribution/Version.hs"
+ versionFileTmp = versionFile ++ ".tmp"
+
+ let languagePragma =
+ "{-# LANGUAGE DeriveDataTypeable, StandaloneDeriving #-}"
+ languagePragmaCPP =
+ "{-# LANGUAGE CPP, DeriveDataTypeable, StandaloneDeriving #-}"
+
+ derivingDataVersion =
+ "deriving instance Data Version"
+ derivingDataVersionCPP = unlines [
+ "#if __GLASGOW_HASKELL__ < 707",
+ derivingDataVersion,
+ "#endif"
+ ]
+
+ vf <- readFile versionFile
+ writeFile versionFileTmp
+ $ replace derivingDataVersion derivingDataVersionCPP
+ $ replace languagePragma languagePragmaCPP vf
+
+ renameFile versionFileTmp versionFile
+
+unpackPatchedCabal
+ :: Options
+ -> Version
+ -> FilePath
+ -> CabalPatchDescription
+ -> IO CabalSourceDir
+unpackPatchedCabal opts cabalVer tmpdir (CabalPatchDescription _ variant patch) = do
+ res@(CabalSourceDir dir) <- unpackCabal opts cabalVer tmpdir variant
+ patch dir
+ return res
+
+data UnpackCabalVariant = Pristine | LatestRevision
+newtype CabalSourceDir = CabalSourceDir { cabalSourceDir :: FilePath }
+unpackCabal
+ :: Options -> Version -> FilePath -> UnpackCabalVariant -> IO CabalSourceDir
+unpackCabal opts cabalVer tmpdir variant = do
+ let cabal = "Cabal-" ++ showVersion cabalVer
+ dir = tmpdir </> cabal
+ variant_opts = case variant of Pristine -> [ "--pristine" ]; _ -> []
+ args = [ "get", cabal ] ++ variant_opts
+ callProcessStderr opts (Just tmpdir) (cabalProgram opts) args
+ return $ CabalSourceDir dir
+
+unpackCabalHEAD :: FilePath -> IO (CabalSourceDir, String)
+unpackCabalHEAD tmpdir = do
+ let dir = tmpdir </> "cabal-head.git"
+ url = "https://github.com/haskell/cabal.git"
+ ExitSuccess <- rawSystem "git" [ "clone", "--depth=1", url, dir]
+ commit <-
+ withDirectory_ dir $ trim <$> readProcess "git" ["rev-parse", "HEAD"] ""
+ return (CabalSourceDir $ dir </> "Cabal", commit)
+ where
+ withDirectory_ :: FilePath -> IO a -> IO a
+ withDirectory_ dir action =
+ bracket
+ (liftIO getCurrentDirectory)
+ (liftIO . setCurrentDirectory)
+ (\_ -> liftIO (setCurrentDirectory dir) >> action)
+
+errorInstallCabal :: Version -> FilePath -> IO a
+errorInstallCabal cabalVer _distdir = panicIO $ printf "\
+\Installing Cabal version %s failed.\n\
+\\n\
+\You have the following choices to fix this:\n\
+\\n\
+\- The easiest way to try and fix this is just reconfigure the project and try\n\
+\ again:\n\
+\ $ cabal clean && cabal configure\n\
+\\n\
+\- If that fails you can try to install the version of Cabal mentioned above\n\
+\ into your global/user package-db somehow, you'll probably have to fix\n\
+\ something otherwise it wouldn't have failed above:\n\
+\ $ cabal install Cabal --constraint 'Cabal == %s'\n\
+\\n\
+\- If you're using `Build-Type: Simple`:\n\
+\ - You can see if you can reinstall your cabal-install executable while\n\
+\ having it linked to a version of Cabal that's available in you\n\
+\ package-dbs or can be built automatically:\n\
+\ $ ghc-pkg list | grep Cabal # find an available Cabal version\n\
+\ Cabal-W.X.Y.Z\n\
+\ $ cabal install cabal-install --constraint 'Cabal == W.X.*'\n\
+\ Afterwards you'll have to reconfigure your project:\n\
+\ $ cabal clean && cabal configure\n\
+\\n\
+\- If you're using `Build-Type: Custom`:\n\
+\ - Have cabal-install rebuild your Setup.hs executable with a version of the\n\
+\ Cabal library that you have available in your global/user package-db:\n\
+\ $ cabal clean && cabal configure\n\
+\ You might also have to install some version of the Cabal to do this:\n\
+\ $ cabal install Cabal\n\
+\\n" sver sver
+ where
+ sver = showVersion cabalVer
+
+cachedExe :: Version -> IO (Maybe FilePath)
+cachedExe compCabalVersion = do
+ appdir <- appCacheDir
+ let exe = appdir </> exeName (Right compCabalVersion)
+ exists <- doesFileExist exe
+ return $ if exists then Just exe else Nothing
+
+listCabalVersions :: Options -> IO [Version]
+listCabalVersions opts = listCabalVersions' opts Nothing
+
+-- TODO: Include sandbox? Probably only relevant for build-type:custom projects.
+listCabalVersions' :: Options -> Maybe PackageDbDir -> IO [Version]
+listCabalVersions' Options {..} mdb = do
+ let mdbopt = ("--package-conf="++) <$> packageDbDir <$> mdb
+ opts = ["list", "--simple-output", "Cabal"] ++ maybeToList mdbopt
+
+ catMaybes . map (fmap snd . parsePkgId . fromString) . words
+ <$> readProcess ghcPkgProgram opts ""
+
+cabalVersionExistsInPkgDb :: Options -> Version -> IO Bool
+cabalVersionExistsInPkgDb opts cabalVer = do
+ db@(PackageDbDir db_path) <- getPrivateCabalPkgDb opts (Right cabalVer)
+ exists <- doesDirectoryExist db_path
+ case exists of
+ False -> return False
+ True -> do
+ vers <- listCabalVersions' opts (Just db)
+ return $ cabalVer `elem` vers
+
+
+ghcVersion :: Options -> IO Version
+ghcVersion Options {..} = do
+ parseVer . trim <$> readProcess ghcProgram ["--numeric-version"] ""
+
+ghcPkgVersion :: Options -> IO Version
+ghcPkgVersion Options {..} = do
+ parseVer . trim . dropWhile (not . isDigit) <$> readProcess ghcPkgProgram ["--version"] ""
+
+cabalInstallVersion :: Options -> IO Version
+cabalInstallVersion Options {..} = do
+ parseVer . trim <$> readProcess cabalProgram ["--numeric-version"] ""
+
+trim :: String -> String
+trim = dropWhileEnd isSpace
+
+createPkgDb :: Options -> Either String Version -> IO PackageDbDir
+createPkgDb opts@Options {..} cabalVer = do
+ db@(PackageDbDir db_path) <- getPrivateCabalPkgDb opts cabalVer
+ exists <- doesDirectoryExist db_path
+ when (not exists) $ callProcessStderr opts Nothing ghcPkgProgram ["init", db_path]
+ return db
+
+getPrivateCabalPkgDb :: Options -> Either String Version -> IO PackageDbDir
+getPrivateCabalPkgDb opts cabalVer = do
+ appdir <- appCacheDir
+ ghcVer <- ghcVersion opts
+ let db_path = appdir </> exeName cabalVer
+ ++ "-ghc" ++ showVersion ghcVer
+ ++ ".package-db"
+ return $ PackageDbDir db_path
+
+-- "Cabal" ++ ver ++ "-ghc" ++ showVersion ghcVer
+
+-- | Find @version: XXX@ delcaration in a cabal file
+cabalFileVersion :: String -> Version
+cabalFileVersion cabalFile =
+ fromJust $ parseVer . extract <$> find ("version:" `isPrefixOf`) ls
+ where
+ ls = map (map toLower) $ lines cabalFile
+ extract = dropWhile (/=':') >>> drop 1 >>> dropWhile isSpace >>> takeWhile (not . isSpace)
diff --git a/src/CabalHelper/Compiletime/Data.hs b/src/CabalHelper/Compiletime/Data.hs
new file mode 100644
index 0000000..dce3570
--- /dev/null
+++ b/src/CabalHelper/Compiletime/Data.hs
@@ -0,0 +1,86 @@
+-- Copyright (C) 2015,2017 Daniel Gröber <dxld ÄT darkboxed DOT org>
+--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU Affero General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+-- GNU Affero General Public License for more details.
+--
+-- You should have received a copy of the GNU Affero General Public License
+-- along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+{-# LANGUAGE TemplateHaskell, ScopedTypeVariables #-}
+{-# OPTIONS_GHC -fforce-recomp #-}
+
+{-|
+Module : CabalHelper.Compiletime.Data
+Description : Embeds source code for runtime component using TH
+License : AGPL-3
+-}
+
+module CabalHelper.Compiletime.Data where
+
+import Control.Monad
+import Control.Monad.IO.Class
+import Data.Functor
+import qualified Data.ByteString as BS
+import qualified Data.ByteString.UTF8 as UTF8
+import Language.Haskell.TH
+import System.Directory
+import System.FilePath
+import System.IO.Temp
+import System.Posix.Files
+import System.Posix.Time
+import System.Posix.Types
+import Prelude
+
+import CabalHelper.Compiletime.Compat.Environment
+
+withSystemTempDirectoryEnv :: String -> (FilePath -> IO b) -> IO b
+withSystemTempDirectoryEnv tpl f = do
+ m <- liftIO $ lookupEnv "CABAL_HELPER_KEEP_SOURCEDIR"
+ case m of
+ Nothing -> withSystemTempDirectory tpl f
+ Just _ -> do
+ tmpdir <- getCanonicalTemporaryDirectory
+ f =<< createTempDirectory tmpdir tpl
+
+withHelperSources :: Maybe FilePath -> (FilePath -> IO a) -> IO a
+withHelperSources mdir action = withDir mdir $ \dir -> do
+ let chdir = dir </> "CabalHelper"
+ liftIO $ do
+ createDirectoryIfMissing True $ chdir </> "Runtime"
+ createDirectoryIfMissing True $ chdir </> "Shared"
+
+ let modtime :: EpochTime
+ modtime = fromIntegral $ (read :: String -> Integer)
+ -- See https://reproducible-builds.org/specs/source-date-epoch/
+ $(runIO $ do
+ msde :: Maybe Integer
+ <- fmap read <$> lookupEnv "SOURCE_DATE_EPOCH"
+ (current_time :: Integer) <- round . toRational <$> epochTime
+ return $ LitE . StringL $ show $ maybe current_time id msde)
+
+ liftIO $ forM_ sourceFiles $ \(fn, src) -> do
+ let path = chdir </> fn
+ BS.writeFile path $ UTF8.fromString src
+ setFileTimes path modtime modtime
+
+ action dir
+ where
+ withDir (Just dir) = \f -> f dir
+ withDir Nothing = withSystemTempDirectoryEnv "cabal-helper-source"
+
+
+sourceFiles :: [(FilePath, String)]
+sourceFiles =
+ [ ("Runtime/Main.hs", $(LitE . StringL <$> runIO (UTF8.toString <$> BS.readFile "src/CabalHelper/Runtime/Main.hs")))
+ , ("Runtime/Licenses.hs", $(LitE . StringL <$> runIO (UTF8.toString <$> BS.readFile "src/CabalHelper/Runtime/Licenses.hs")))
+ , ("Shared/Common.hs", $(LitE . StringL <$> runIO (UTF8.toString <$> BS.readFile "src/CabalHelper/Shared/Common.hs")))
+ , ("Shared/Sandbox.hs", $(LitE . StringL <$> runIO (UTF8.toString <$> BS.readFile "src/CabalHelper/Shared/Sandbox.hs")))
+ , ("Shared/InterfaceTypes.hs", $(LitE . StringL <$> runIO (UTF8.toString <$> BS.readFile "src/CabalHelper/Shared/InterfaceTypes.hs")))
+ ]
diff --git a/src/CabalHelper/Compiletime/GuessGhc.hs b/src/CabalHelper/Compiletime/GuessGhc.hs
new file mode 100644
index 0000000..f4b33d5
--- /dev/null
+++ b/src/CabalHelper/Compiletime/GuessGhc.hs
@@ -0,0 +1,92 @@
+-- Copyright (c) 2003-2014, Isaac Jones, Simon Marlow, Martin Sjögren,
+-- Bjorn Bringert, Krasimir Angelov,
+-- Malcolm Wallace, Ross Patterson, Ian Lynagh,
+-- Duncan Coutts, Thomas Schilling,
+-- Johan Tibell, Mikhail Glushenkov
+-- All rights reserved.
+
+-- Redistribution and use in source and binary forms, with or without
+-- modification, are permitted provided that the following conditions are
+-- met:
+
+-- * Redistributions of source code must retain the above copyright
+-- notice, this list of conditions and the following disclaimer.
+
+-- * Redistributions in binary form must reproduce the above
+-- copyright notice, this list of conditions and the following
+-- disclaimer in the documentation and/or other materials provided
+-- with the distribution.
+
+-- * Neither the name of Isaac Jones nor the names of other
+-- contributors may be used to endorse or promote products derived
+-- from this software without specific prior written permission.
+
+-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+-- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+-- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+-- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+-- OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+-- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+-- LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+-- DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+-- THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+-- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+-- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+{-|
+Module : CabalHelper.Compiletime.GuessGhc
+Description : Logic for finding @ghc-pkg@ based on path to @ghc@
+License : BSD3
+-}
+
+module CabalHelper.Compiletime.GuessGhc (guessToolFromGhcPath) where
+
+import Data.Maybe
+import Data.Char
+import Distribution.Simple.BuildPaths
+import System.Directory
+import System.FilePath
+
+guessToolFromGhcPath :: FilePath -- ^ Tool name
+ -> FilePath -- ^ GHC exe path
+ -> IO (Maybe FilePath)
+guessToolFromGhcPath toolname ghcPath
+ = do let
+ path = ghcPath
+ dir = takeDirectory path
+ versionSuffix = takeVersionSuffix (dropExeExtension path)
+ guessNormal = dir </> toolname <.> exeExtension'
+ guessGhcVersioned = dir </> (toolname ++ "-ghc" ++ versionSuffix)
+ <.> exeExtension'
+ guessVersioned = dir </> (toolname ++ versionSuffix)
+ <.> exeExtension'
+ guesses | null versionSuffix = [guessNormal]
+ | otherwise = [guessGhcVersioned,
+ guessVersioned,
+ guessNormal]
+ exists <- mapM doesFileExist guesses
+ return $ listToMaybe [ file | (file, True) <- zip guesses exists ]
+
+ where takeVersionSuffix :: FilePath -> String
+ takeVersionSuffix = takeWhileEndLE isSuffixChar
+
+ isSuffixChar :: Char -> Bool
+ isSuffixChar c = isDigit c || c == '.' || c == '-'
+
+ dropExeExtension :: FilePath -> FilePath
+ dropExeExtension filepath =
+ case splitExtension filepath of
+ (filepath', extension) | extension == exeExtension' -> filepath'
+ | otherwise -> filepath
+
+-- | @takeWhileEndLE p@ is equivalent to @reverse . takeWhile p . reverse@, but
+-- is usually faster (as well as being easier to read).
+takeWhileEndLE :: (a -> Bool) -> [a] -> [a]
+takeWhileEndLE p = fst . foldr go ([], False)
+ where
+ go x (rest, done)
+ | not done && p x = (x:rest, False)
+ | otherwise = (rest, True)
+
+exeExtension' :: FilePath
+exeExtension' = Distribution.Simple.BuildPaths.exeExtension
diff --git a/src/CabalHelper/Compiletime/Log.hs b/src/CabalHelper/Compiletime/Log.hs
new file mode 100644
index 0000000..a75f8b7
--- /dev/null
+++ b/src/CabalHelper/Compiletime/Log.hs
@@ -0,0 +1,44 @@
+-- Copyright (C) 2017 Daniel Gröber <dxld ÄT darkboxed DOT org>
+--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU Affero General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+-- GNU Affero General Public License for more details.
+--
+-- You should have received a copy of the GNU Affero General Public License
+-- along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+{-# LANGUAGE ScopedTypeVariables #-}
+
+{-|
+Module : CabalHelper.Compiletime.Log
+Description : Basic logging facilities
+License : AGPL-3
+-}
+
+module CabalHelper.Compiletime.Log where
+
+import Control.Monad
+import Control.Monad.IO.Class
+import Control.Exception as E
+import Data.String
+import System.IO
+import Prelude
+
+import CabalHelper.Compiletime.Types
+
+vLog :: MonadIO m => Options -> String -> m ()
+vLog Options { verbose = True } msg =
+ liftIO $ hPutStrLn stderr msg
+vLog _ _ = return ()
+
+logIOError :: Options -> String -> IO (Maybe a) -> IO (Maybe a)
+logIOError opts label a = do
+ a `E.catch` \(ex :: IOError) -> do
+ vLog opts $ label ++ ": " ++ show ex
+ return Nothing
diff --git a/src/CabalHelper/Compiletime/Types.hs b/src/CabalHelper/Compiletime/Types.hs
new file mode 100644
index 0000000..bfe9b7c
--- /dev/null
+++ b/src/CabalHelper/Compiletime/Types.hs
@@ -0,0 +1,40 @@
+-- Copyright (C) 2015 Daniel Gröber <dxld ÄT darkboxed DOT org>
+--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU Affero General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+-- GNU Affero General Public License for more details.
+--
+-- You should have received a copy of the GNU Affero General Public License
+-- along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+{-# LANGUAGE DeriveGeneric, DeriveDataTypeable, DefaultSignatures #-}
+
+{-|
+Module : CabalHelper.Compiletime.Types
+Description : Types used throughout
+License : AGPL-3
+-}
+
+module CabalHelper.Compiletime.Types where
+
+import Data.Version
+
+data Options = Options {
+ verbose :: Bool
+ , ghcProgram :: FilePath
+ , ghcPkgProgram :: FilePath
+ , cabalProgram :: FilePath
+ , cabalVersion :: Maybe Version
+ , cabalPkgDb :: Maybe PackageDbDir
+}
+
+newtype PackageDbDir = PackageDbDir { packageDbDir :: FilePath }
+
+defaultOptions :: Options
+defaultOptions = Options False "ghc" "ghc-pkg" "cabal" Nothing Nothing
diff --git a/src/CabalHelper/Compiletime/Wrapper.hs b/src/CabalHelper/Compiletime/Wrapper.hs
new file mode 100644
index 0000000..6713944
--- /dev/null
+++ b/src/CabalHelper/Compiletime/Wrapper.hs
@@ -0,0 +1,164 @@
+-- cabal-helper: Simple interface to Cabal's configuration state
+-- Copyright (C) 2015 Daniel Gröber <dxld ÄT darkboxed DOT org>
+--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU Affero General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+-- GNU Affero General Public License for more details.
+--
+-- You should have received a copy of the GNU Affero General Public License
+-- along with this program. If not, see <http://www.gnu.org/licenses/>.
+{-# LANGUAGE RecordWildCards, FlexibleContexts #-}
+module Main where
+
+import Control.Applicative
+import Control.Monad
+import Data.Char
+import Data.List
+import Data.Maybe
+import Data.String
+import Text.Printf
+import System.Console.GetOpt
+import System.Environment
+import System.Directory
+import System.FilePath
+import System.Process
+import System.Exit
+import System.IO
+import Prelude
+
+import Distribution.System (buildPlatform)
+import Distribution.Text (display)
+import Distribution.Verbosity (silent, deafening)
+import Distribution.PackageDescription.Parse (readPackageDescription)
+import Distribution.Package (packageName, packageVersion)
+
+import Paths_cabal_helper (version)
+import CabalHelper.Compiletime.Compat.Version
+import CabalHelper.Compiletime.Compile
+import CabalHelper.Compiletime.GuessGhc
+import CabalHelper.Compiletime.Types
+import CabalHelper.Shared.Common
+import CabalHelper.Shared.InterfaceTypes
+
+usage :: IO ()
+usage = do
+ prog <- getProgName
+ hPutStr stderr $ "Usage: " ++ prog ++ " " ++ usageMsg
+ where
+ usageMsg = "\
+\( print-appcachedir\n\
+\| print-build-platform\n\
+\| [--verbose]\n\
+\ [--with-ghc=GHC_PATH]\n\
+\ [--with-ghc-pkg=GHC_PKG_PATH]\n\
+\ [--with-cabal=CABAL_PATH]\n\
+\ [--with-cabal-version=VERSION]\n\
+\ [--with-cabal-pkg-db=PKG_DB]\n\
+\ PROJ_DIR DIST_DIR ( print-exe | package-id | [CABAL_HELPER_ARGS...] ) )\n"
+
+globalArgSpec :: [OptDescr (Options -> Options)]
+globalArgSpec =
+ [ option "" ["verbose"] "Be more verbose" $
+ NoArg $ \o -> o { verbose = True }
+
+ , option "" ["with-ghc"] "GHC executable to use" $
+ reqArg "PROG" $ \p o -> o { ghcProgram = p }
+
+ , option "" ["with-ghc-pkg"] "ghc-pkg executable to use (only needed when guessing from GHC path fails)" $
+ reqArg "PROG" $ \p o -> o { ghcPkgProgram = p }
+
+ , option "" ["with-cabal"] "cabal-install executable to use" $
+ reqArg "PROG" $ \p o -> o { cabalProgram = p }
+
+ , option "" ["with-cabal-version"] "Cabal library version to use" $
+ reqArg "VERSION" $ \p o -> o { cabalVersion = Just $ parseVer p }
+
+ , option "" ["with-cabal-pkg-db"] "package database to look for Cabal library in" $
+ reqArg "PKG_DB" $ \p o -> o { cabalPkgDb = Just (PackageDbDir p) }
+
+ ]
+ where
+ option :: [Char] -> [String] -> String -> ArgDescr a -> OptDescr a
+ option s l udsc dsc = Option s l dsc udsc
+
+ reqArg :: String -> (String -> a) -> ArgDescr a
+ reqArg udsc dsc = ReqArg dsc udsc
+
+parseCommandArgs :: Options -> [String] -> (Options, [String])
+parseCommandArgs opts argv
+ = case getOpt RequireOrder globalArgSpec argv of
+ (o,r,[]) -> (foldr id opts o, r)
+ (_,_,errs) ->
+ panic $ "Parsing command options failed:\n" ++ concat errs
+
+guessProgramPaths :: Options -> IO Options
+guessProgramPaths opts = do
+ if not (same ghcProgram opts dopts) && same ghcPkgProgram opts dopts
+ then do
+ mghcPkg <- guessToolFromGhcPath "ghc-pkg" (ghcProgram opts)
+ return opts {
+ ghcPkgProgram = fromMaybe (ghcPkgProgram opts) mghcPkg
+ }
+ else return opts
+ where
+ same f o o' = f o == f o'
+ dopts = defaultOptions
+
+overrideVerbosityEnvVar :: Options -> IO Options
+overrideVerbosityEnvVar opts = do
+ x <- lookup "CABAL_HELPER_DEBUG" <$> getEnvironment
+ return $ case x of
+ Just _ -> opts { verbose = True }
+ Nothing -> opts
+
+main :: IO ()
+main = handlePanic $ do
+ (opts', args) <- parseCommandArgs defaultOptions <$> getArgs
+ opts <- overrideVerbosityEnvVar =<< guessProgramPaths opts'
+ case args of
+ [] -> usage
+ "help":[] -> usage
+ "version":[] -> putStrLn $ showVersion version
+ "print-appdatadir":[] -> putStrLn =<< appCacheDir
+ "print-appcachedir":[] -> putStrLn =<< appCacheDir
+ "print-build-platform":[] -> putStrLn $ display buildPlatform
+
+ projdir:_distdir:"package-id":[] -> do
+ let v | verbose opts = deafening
+ | otherwise = silent
+ -- ghc-mod will catch multiple cabal files existing before we get here
+ [cfile] <- filter isCabalFile <$> getDirectoryContents projdir
+ gpd <- readPackageDescription v (projdir </> cfile)
+ putStrLn $ show $
+ [Just $ ChResponseVersion (display (packageName gpd)) (toDataVersion $ packageVersion gpd)]
+
+ projdir:distdir:args' -> do
+ cfgf <- canonicalizePath (distdir </> "setup-config")
+ mhdr <- getCabalConfigHeader cfgf
+ case mhdr of
+ Nothing -> panic $ printf "\
+\Could not read Cabal's persistent setup configuration header\n\
+\- Check first line of: %s\n\
+\- Maybe try: $ cabal configure" cfgf
+ Just (hdrCabalVersion, _) -> do
+ case cabalVersion opts of
+ Just ver | hdrCabalVersion /= ver -> panic $ printf "\
+\Cabal version %s was requested but setup configuration was\n\
+\written by version %s" (showVersion ver) (showVersion hdrCabalVersion)
+ _ -> do
+ eexe <- compileHelper opts hdrCabalVersion projdir distdir
+ case eexe of
+ Left e -> exitWith e
+ Right exe ->
+ case args' of
+ "print-exe":_ -> putStrLn exe
+ _ -> do
+ (_,_,_,h) <- createProcess $ proc exe args
+ exitWith =<< waitForProcess h
+ _ -> error "invalid command line"