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+-- cabal-helper: Simple interface to Cabal's configuration state
+-- Copyright (C) 2015-2018 Daniel Gröber <cabal-helper@dxld.at>
+--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU 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 General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+{-# LANGUAGE CPP, BangPatterns, RecordWildCards, RankNTypes, ViewPatterns #-}
+
+#ifdef MIN_VERSION_Cabal
+#undef CH_MIN_VERSION_Cabal
+#define CH_MIN_VERSION_Cabal MIN_VERSION_Cabal
+#endif
+
+import Distribution.Simple.Utils (cabalVersion)
+import Distribution.Simple.Configure
+import Distribution.Package
+ ( PackageIdentifier
+ , InstalledPackageId
+ , PackageId
+ , packageName
+ , packageVersion
+ )
+import Distribution.PackageDescription
+ ( PackageDescription
+ , GenericPackageDescription(..)
+ , Flag(..)
+ , FlagName(..)
+ , FlagAssignment
+ , Executable(..)
+ , Library(..)
+ , TestSuite(..)
+ , Benchmark(..)
+ , BuildInfo(..)
+ , TestSuiteInterface(..)
+ , BenchmarkInterface(..)
+ , withLib
+ )
+import Distribution.PackageDescription.Configuration
+ ( flattenPackageDescription
+ )
+import Distribution.Simple.Program
+ ( requireProgram
+ , ghcProgram
+ )
+import Distribution.Simple.Program.Types
+ ( ConfiguredProgram(..)
+ )
+import Distribution.Simple.Configure
+ ( getPersistBuildConfig
+ )
+import Distribution.Simple.LocalBuildInfo
+ ( LocalBuildInfo(..)
+ , Component(..)
+ , ComponentName(..)
+ , ComponentLocalBuildInfo(..)
+ , componentBuildInfo
+ , externalPackageDeps
+ , withComponentsLBI
+ , withLibLBI
+ , withExeLBI
+ )
+import Distribution.Simple.GHC
+ ( componentGhcOptions
+ )
+import Distribution.Simple.Program.GHC
+ ( GhcOptions(..)
+ , renderGhcOptions
+ )
+import Distribution.Simple.Setup
+ ( ConfigFlags(..)
+ , Flag(..)
+ , fromFlagOrDefault
+ )
+import Distribution.Simple.Build
+ ( initialBuildSteps
+ )
+import Distribution.Simple.BuildPaths
+ ( autogenModuleName
+ , cppHeaderName
+ )
+import Distribution.Simple.Compiler
+ ( PackageDB(..)
+ , compilerId
+ )
+import Distribution.Compiler
+ ( CompilerId(..)
+ )
+import Distribution.ModuleName
+ ( components
+ )
+import qualified Distribution.ModuleName as C
+ ( ModuleName
+ )
+import Distribution.Text
+ ( display
+ )
+import Distribution.Verbosity
+ ( Verbosity
+ , silent
+ , deafening
+ , normal
+ )
+import Distribution.Version
+ ( Version
+ )
+
+#if CH_MIN_VERSION_Cabal(1,22,0)
+-- CPP >= 1.22
+import Distribution.Utils.NubList
+#endif
+
+#if CH_MIN_VERSION_Cabal(1,23,0)
+-- >= 1.23
+import Distribution.Simple.LocalBuildInfo
+ ( localUnitId
+ )
+#else
+-- <= 1.22
+import Distribution.Simple.LocalBuildInfo
+ ( inplacePackageId
+ )
+#endif
+
+#if CH_MIN_VERSION_Cabal(1,25,0)
+-- >=1.25
+import Distribution.PackageDescription
+ ( unFlagName
+ -- , mkFlagName
+ )
+import Distribution.Types.ForeignLib
+ ( ForeignLib(..)
+ )
+import Distribution.Types.UnqualComponentName
+ ( unUnqualComponentName
+ )
+#endif
+
+#if CH_MIN_VERSION_Cabal(2,0,0)
+-- CPP >= 2.0
+import Distribution.Simple.LocalBuildInfo
+ ( allLibModules
+ , componentBuildDir
+ )
+import Distribution.Simple.Register
+ ( internalPackageDBPath
+ )
+import Distribution.Backpack
+ ( OpenUnitId(..),
+ OpenModule(..)
+ )
+import Distribution.ModuleName
+ ( ModuleName
+ )
+import Distribution.Types.ComponentId
+ ( unComponentId
+ )
+import Distribution.Types.ComponentLocalBuildInfo
+ ( maybeComponentInstantiatedWith
+ )
+import Distribution.Types.ModuleRenaming
+ ( ModuleRenaming(..),
+ isDefaultRenaming
+ )
+import Distribution.Types.MungedPackageId
+ ( MungedPackageId
+ )
+import Distribution.Types.UnitId
+ ( UnitId
+ , unDefUnitId
+ , unUnitId
+ )
+import Distribution.Types.UnitId
+ ( DefUnitId
+ )
+import Distribution.Utils.NubList
+ ( toNubListR
+ )
+import Distribution.Version
+ ( versionNumbers
+ , mkVersion
+ )
+import qualified Distribution.InstalledPackageInfo as Installed
+#endif
+
+#if CH_MIN_VERSION_Cabal(2,2,0)
+import Distribution.Types.GenericPackageDescription
+ ( unFlagAssignment
+ )
+#endif
+
+import Control.Applicative ((<$>))
+import Control.Arrow (first, second, (&&&))
+import Control.Monad
+import Control.Exception (catch, PatternMatchFail(..))
+import Data.List
+import qualified Data.Map as Map
+import Data.Maybe
+import Data.Monoid
+import Data.IORef
+import qualified Data.Version as DataVersion
+import System.Environment
+import System.Directory
+import System.FilePath
+import System.Exit
+import System.IO
+import System.IO.Unsafe (unsafeInterleaveIO, unsafePerformIO)
+import Text.Printf
+
+import CabalHelper.Shared.Sandbox
+import CabalHelper.Shared.Common
+import CabalHelper.Shared.InterfaceTypes
+
+usage :: IO ()
+usage = do
+ prog <- getProgName
+ hPutStr stderr $ "Usage: " ++ prog ++ " " ++ usageMsg
+ where
+ usageMsg = ""
+ ++"PROJ_DIR DIST_DIR [--with-* ...] (\n"
+ ++" version\n"
+ ++" | print-lbi [--human]\n"
+ ++" | package-id\n"
+ ++" | flags\n"
+ ++" | config-flags\n"
+ ++" | non-default-config-flags\n"
+ ++" | write-autogen-files\n"
+ ++" | compiler-version\n"
+ ++" | ghc-options [--with-inplace]\n"
+ ++" | ghc-src-options [--with-inplace]\n"
+ ++" | ghc-pkg-options [--with-inplace]\n"
+ ++" | ghc-merged-pkg-options [--with-inplace]\n"
+ ++" | ghc-lang-options [--with-inplace]\n"
+ ++" | package-db-stack\n"
+ ++" | entrypoints\n"
+ ++" | needs-build-output\n"
+ ++" | source-dirs\n"
+ ++" ) ...\n"
+
+commands :: [String]
+commands = [ "print-lbi"
+ , "package-id"
+ , "flags"
+ , "config-flags"
+ , "non-default-config-flags"
+ , "write-autogen-files"
+ , "compiler-version"
+ , "ghc-options"
+ , "ghc-src-options"
+ , "ghc-pkg-options"
+ , "ghc-lang-options"
+ , "package-db-stack"
+ , "entrypoints"
+ , "needs-build-output"
+ , "source-dirs"
+ ]
+
+main :: IO ()
+main = do
+ args <- getArgs
+
+ projdir:distdir:args' <- case args of
+ [] -> usage >> exitFailure
+ _ -> return args
+
+ ddexists <- doesDirectoryExist distdir
+ when (not ddexists) $ do
+ errMsg $ "distdir '"++distdir++"' does not exist"
+ exitFailure
+
+ [cfile] <- filter isCabalFile <$> getDirectoryContents projdir
+
+ v <- maybe silent (const deafening) . lookup "CABAL_HELPER_DEBUG" <$> getEnvironment
+ lbi <- unsafeInterleaveIO $ getPersistBuildConfig distdir
+ gpd <- unsafeInterleaveIO $ readPackageDescription v (projdir </> cfile)
+ let pd = localPkgDescr lbi
+ let lvd = (lbi, v, distdir)
+
+ let
+ -- a =<< b $$ c == (a =<< b) $$ c
+ infixr 2 $$
+ ($$) = ($)
+
+ collectCmdOptions :: [String] -> [[String]]
+ collectCmdOptions =
+ reverse . map reverse . foldl f [] . dropWhile isOpt
+ where
+ isOpt = ("--" `isPrefixOf`)
+ f [] x = [[x]]
+ f (a:as) x
+ | isOpt x = (x:a):as
+ | otherwise = [x]:(a:as)
+
+ let cmds = collectCmdOptions args'
+
+ if any (["version"] `isPrefixOf`) cmds
+ then do
+ putStrLn $
+ printf "using version %s of the Cabal library" (display cabalVersion)
+ exitSuccess
+ else return ()
+
+ print =<< flip mapM cmds $$ \x -> do
+ case x of
+ "flags":[] -> do
+ return $ Just $ ChResponseFlags $ sort $
+ map (flagName' &&& flagDefault) $ genPackageFlags gpd
+
+ "config-flags":[] -> do
+ return $ Just $ ChResponseFlags $ sort $
+ map (first unFlagName)
+#if CH_MIN_VERSION_Cabal(2,2,0)
+ $ unFlagAssignment $ configConfigurationsFlags
+#else
+ $ configConfigurationsFlags
+#endif
+ $ configFlags lbi
+
+ "non-default-config-flags":[] -> do
+ let flagDefinitons = genPackageFlags gpd
+ flagAssgnments =
+#if CH_MIN_VERSION_Cabal(2,2,0)
+ unFlagAssignment $ configConfigurationsFlags
+#else
+ configConfigurationsFlags
+#endif
+ $ configFlags lbi
+ nonDefaultFlags =
+ [ (flag_name, val)
+ | MkFlag {flagName=(unFlagName -> flag_name'), flagDefault=def_val} <- flagDefinitons
+ , (unFlagName -> flag_name, val) <- flagAssgnments
+ , flag_name == flag_name'
+ , val /= def_val
+ ]
+ return $ Just $ ChResponseFlags $ sort nonDefaultFlags
+
+ "write-autogen-files":[] -> do
+ initialBuildStepsForAllComponents distdir pd lbi v
+ return Nothing
+
+ "compiler-version":[] -> do
+ let CompilerId comp ver = compilerId $ compiler lbi
+ return $ Just $ ChResponseVersion (show comp) (toDataVersion ver)
+
+ "ghc-options":flags -> do
+ res <- componentOptions lvd True flags id
+ return $ Just $ ChResponseCompList (res ++ [(ChSetupHsName, [])])
+
+ "ghc-src-options":flags -> do
+ res <- componentOptions lvd False flags $ \opts -> mempty {
+ -- Not really needed but "unexpected package db stack: []"
+ ghcOptPackageDBs = [GlobalPackageDB, UserPackageDB],
+
+ ghcOptCppOptions = ghcOptCppOptions opts,
+ ghcOptCppIncludePath = ghcOptCppIncludePath opts,
+ ghcOptCppIncludes = ghcOptCppIncludes opts,
+ ghcOptFfiIncludes = ghcOptFfiIncludes opts,
+ ghcOptSourcePathClear = ghcOptSourcePathClear opts,
+ ghcOptSourcePath = ghcOptSourcePath opts
+ }
+ return $ Just $ ChResponseCompList (res ++ [(ChSetupHsName, [])])
+
+ "ghc-pkg-options":flags -> do
+ res <- componentOptions lvd True flags $ \opts -> mempty {
+ ghcOptPackageDBs = ghcOptPackageDBs opts,
+ ghcOptPackages = ghcOptPackages opts,
+ ghcOptHideAllPackages = ghcOptHideAllPackages opts
+ }
+ return $ Just $ ChResponseCompList (res ++ [(ChSetupHsName, [])])
+
+ "ghc-merged-pkg-options":flags -> do
+ res <- mconcat . map snd <$> (componentOptions' lvd True flags (\_ _ o -> return o) $ \opts -> mempty {
+ ghcOptPackageDBs = [],
+ ghcOptHideAllPackages = NoFlag,
+ ghcOptPackages = ghcOptPackages opts
+ })
+
+ let res' = nubPackageFlags $ res { ghcOptPackageDBs = withPackageDB lbi
+ , ghcOptHideAllPackages = Flag True
+ }
+
+ Just . ChResponseList <$> renderGhcOptions' lbi v res'
+
+ "ghc-lang-options":flags -> do
+ res <- componentOptions lvd False flags $ \opts -> mempty {
+ ghcOptPackageDBs = [GlobalPackageDB, UserPackageDB],
+
+ ghcOptLanguage = ghcOptLanguage opts,
+ ghcOptExtensions = ghcOptExtensions opts,
+ ghcOptExtensionMap = ghcOptExtensionMap opts
+ }
+ return $ Just $ ChResponseCompList (res ++ [(ChSetupHsName, [])])
+
+ "package-db-stack":[] -> do
+ let
+ pkgDb GlobalPackageDB = ChPkgGlobal
+ pkgDb UserPackageDB = ChPkgUser
+ pkgDb (SpecificPackageDB s) = ChPkgSpecific s
+
+ -- TODO: Setup.hs has access to the sandbox as well: ghc-mod#478
+ return $ Just $ ChResponsePkgDbs $ map pkgDb $ withPackageDB lbi
+
+ "entrypoints":[] -> do
+#if CH_MIN_VERSION_Cabal(2,0,0)
+ includeDirMap <- recursiveDepInfo lbi v distdir
+ eps <- componentsMap lbi v distdir $ \c clbi _bi -> do
+ case needsBuildOutput includeDirMap (componentUnitId clbi) of
+ ProduceBuildOutput -> return $ componentEntrypoints c
+ NoBuildOutput -> return seps
+ where (_,_,seps) = recursiveIncludeDirs includeDirMap (componentUnitId clbi)
+#else
+ eps <- componentsMap lbi v distdir $ \c _clbi _bi ->
+ return $ componentEntrypoints c
+#endif
+ -- MUST append Setup component at the end otherwise CabalHelper gets
+ -- confused
+ let eps' = eps ++ [(ChSetupHsName, ChSetupEntrypoint)]
+ return $ Just $ ChResponseEntrypoints eps'
+
+ "needs-build-output":[] -> do
+#if CH_MIN_VERSION_Cabal(2,0,0)
+ includeDirMap <- recursiveDepInfo lbi v distdir
+ nbs <- componentsMap lbi v distdir $ \c clbi _bi ->
+ return $ needsBuildOutput includeDirMap (componentUnitId clbi)
+#else
+ nbs <- componentsMap lbi v distdir $ \c _clbi _bi ->
+ return $ NoBuildOutput
+#endif
+ return $ Just $ ChResponseNeedsBuild nbs
+
+ "source-dirs":[] -> do
+ res <- componentsMap lbi v distdir $$ \_ _ bi -> return $ hsSourceDirs bi
+ return $ Just $ ChResponseCompList (res ++ [(ChSetupHsName, [])])
+
+ "print-lbi":flags ->
+ case flags of
+ ["--human"] -> print lbi >> return Nothing
+ [] -> return $ Just $ ChResponseLbi $ show lbi
+
+ cmd:_ | not (cmd `elem` commands) ->
+ errMsg ("Unknown command: " ++ cmd) >> usage >> exitFailure
+ _ ->
+ errMsg "Invalid usage!" >> usage >> exitFailure
+
+flagName' = unFlagName . flagName
+
+-- getLibrary :: PackageDescription -> Library
+-- getLibrary pd = unsafePerformIO $ do
+-- lr <- newIORef (error "libraryMap: empty IORef")
+-- withLib pd (writeIORef lr)
+-- readIORef lr
+
+getLibraryClbi pd lbi = unsafePerformIO $ do
+ lr <- newIORef Nothing
+
+ withLibLBI pd lbi $ \ lib clbi ->
+ writeIORef lr $ Just (lib,clbi)
+
+ readIORef lr
+
+
+getExeClbi pd lbi = unsafePerformIO $ do
+ lr <- newIORef Nothing
+
+ withExeLBI pd lbi $ \ exe clbi ->
+ writeIORef lr $ Just (exe,clbi)
+
+ readIORef lr
+
+
+componentsMap :: LocalBuildInfo
+ -> Verbosity
+ -> FilePath
+ -> ( Component
+ -> ComponentLocalBuildInfo
+ -> BuildInfo
+ -> IO a)
+ -> IO [(ChComponentName, a)]
+componentsMap lbi _v _distdir f = do
+ let pd = localPkgDescr lbi
+
+ lr <- newIORef []
+
+ -- withComponentsLBI is deprecated but also exists in very old versions
+ -- it's equivalent to withAllComponentsInBuildOrder in newer versions
+ withComponentsLBI pd lbi $ \c clbi -> do
+ let bi = componentBuildInfo c
+ name = componentNameFromComponent c
+
+ l' <- readIORef lr
+ r <- f c clbi bi
+#if CH_MIN_VERSION_Cabal(2,0,0)
+ writeIORef lr $ (componentNameToCh (unUnitId $ componentUnitId clbi) name, r):l'
+#else
+ writeIORef lr $ (componentNameToCh "" name, r):l'
+#endif
+
+ reverse <$> readIORef lr
+
+componentOptions' (lbi, v, distdir) inplaceFlag flags rf f = do
+ let pd = localPkgDescr lbi
+#if CH_MIN_VERSION_Cabal(2,0,0)
+ includeDirMap <- recursiveDepInfo lbi v distdir
+#endif
+
+ componentsMap lbi v distdir $ \c clbi bi ->
+ let
+ outdir = componentOutDir lbi c
+ (clbi', adopts) = case flags of
+ _ | not inplaceFlag -> (clbi, mempty)
+ ["--with-inplace"] -> (clbi, mempty)
+#if CH_MIN_VERSION_Cabal(2,0,0)
+ [] -> removeInplaceDeps v lbi pd clbi includeDirMap
+#else
+ [] -> removeInplaceDeps v lbi pd clbi
+#endif
+ opts = componentGhcOptions normal lbi bi clbi' outdir
+ opts' = f opts
+
+ in rf lbi v $ nubPackageFlags $ opts' `mappend` adopts
+
+componentOptions (lbi, v, distdir) inplaceFlag flags f =
+ componentOptions' (lbi, v, distdir) inplaceFlag flags renderGhcOptions' f
+
+gmModuleName :: C.ModuleName -> ChModuleName
+gmModuleName = ChModuleName . intercalate "." . components
+
+#if CH_MIN_VERSION_Cabal(2,0,0)
+removeInplaceDeps :: Verbosity
+ -> LocalBuildInfo
+ -> PackageDescription
+ -> ComponentLocalBuildInfo
+ -> Map.Map UnitId SubDeps
+ -> (ComponentLocalBuildInfo, GhcOptions)
+removeInplaceDeps _v lbi pd clbi includeDirs = let
+ removeInplace c =
+ let
+ (ideps, incs) = partition (isInplaceCompInc c) (componentIncludes c)
+ hasIdeps' = not $ null ideps
+ c' = c { componentPackageDeps = error "using deprecated field:componentPackageDeps"
+ , componentInternalDeps = []
+ , componentIncludes = incs }
+ in (hasIdeps',c')
+
+ needsBuild = needsBuildOutput includeDirs (componentUnitId clbi)
+
+ cleanRecursiveOpts :: Component
+ -> BuildInfo -> ComponentLocalBuildInfo -> GhcOptions
+ cleanRecursiveOpts comp libbi libclbi =
+ let
+ liboutdir = componentOutDir lbi comp
+ (_,libclbi') = removeInplace libclbi
+ (extraIncludes,extraDeps',_ems) = recursiveIncludeDirs includeDirs (componentUnitId libclbi)
+ (_,extraDeps) = partition (isInplaceCompInc libclbi) extraDeps'
+ opts = (componentGhcOptions normal lbi libbi libclbi' liboutdir) {
+ ghcOptPackageDBs = []
+ }
+
+ in
+ opts { ghcOptSourcePath = ghcOptSourcePath opts <> toNubListR extraIncludes
+ , ghcOptPackages = ghcOptPackages opts <> toNubListR extraDeps }
+
+ libopts =
+ case (getLibraryClbi pd lbi,getExeClbi pd lbi) of
+ (Just (lib, libclbi),_) | hasIdeps ->
+ let
+ libbi = libBuildInfo lib
+ opts = cleanRecursiveOpts (CLib lib) libbi libclbi
+ in
+ opts { ghcOptInputModules = ghcOptInputModules opts <> (toNubListR $ allLibModules lib libclbi) }
+ (_,Just (exe,execlbi)) | hasIdeps ->
+ let
+ exebi = buildInfo exe
+ in
+ cleanRecursiveOpts (CExe exe) exebi execlbi
+ _ -> mempty
+
+ distDir = fromFlagOrDefault ("." </> "dist") (configDistPref $ configFlags lbi)
+ packageDbDir = internalPackageDBPath lbi distDir
+ (hasIdeps,clbi') = case needsBuild of
+ NoBuildOutput -> removeInplace clbi
+ ProduceBuildOutput -> (False, clbi)
+ libopts' = case needsBuild of
+ NoBuildOutput -> libopts
+ ProduceBuildOutput -> mempty { ghcOptPackageDBs = [SpecificPackageDB packageDbDir] }
+ in (clbi', libopts')
+#else
+removeInplaceDeps :: Verbosity
+ -> LocalBuildInfo
+ -> PackageDescription
+ -> ComponentLocalBuildInfo
+ -> (ComponentLocalBuildInfo, GhcOptions)
+removeInplaceDeps _v lbi pd clbi = let
+ (ideps, deps) = partition (isInplaceDep lbi) (componentPackageDeps clbi)
+ hasIdeps = not $ null ideps
+ libopts =
+ case getLibraryClbi pd lbi of
+ Just (lib, libclbi) | hasIdeps ->
+ let
+ libbi = libBuildInfo lib
+ liboutdir = componentOutDir lbi (CLib lib)
+ in
+ (componentGhcOptions normal lbi libbi libclbi liboutdir) {
+ ghcOptPackageDBs = []
+ }
+ _ -> mempty
+ clbi' = clbi { componentPackageDeps = deps }
+ in (clbi', libopts)
+#endif
+
+
+#if CH_MIN_VERSION_Cabal(2,0,0)
+recursiveDepInfo lbi v distdir = do
+ includeDirs <- componentsMap lbi v distdir $ \c clbi bi -> do
+ return (componentUnitId clbi
+ , ( SubDeps
+ { sdComponentInternalDeps = componentInternalDeps clbi
+ , sdHsSourceDirs = hsSourceDirs bi
+ , sdComponentIncludes = componentIncludes clbi
+ , sdComponentEntryPoints = componentEntrypoints c}) )
+ return $ Map.fromList $ map snd includeDirs
+
+data SubDeps = SubDeps
+ { sdComponentInternalDeps :: [UnitId]
+ , sdHsSourceDirs :: [FilePath]
+ , sdComponentIncludes :: [(OpenUnitId, ModuleRenaming)]
+ , sdComponentEntryPoints :: ChEntrypoint
+ }
+
+recursiveIncludeDirs :: Map.Map UnitId SubDeps
+ -> UnitId -> ([FilePath], [(OpenUnitId, ModuleRenaming)]
+ , ChEntrypoint)
+recursiveIncludeDirs includeDirs unit = go ([],[],Nothing) [unit]
+ where
+ go (afp,aci,Nothing ) [] = (afp,aci,error "recursiveIncludeDirs:no ChEntrypoint")
+ go (afp,aci,Just amep) [] = (afp,aci,amep)
+ go acc@(afp,aci,amep) (u:us) = case Map.lookup u includeDirs of
+ Nothing -> go acc us
+ Just (SubDeps us' sfp sci sep) -> go (afp++sfp,aci++sci,Just (combineEp amep sep)) (us++us')
+
+needsBuildOutput :: Map.Map UnitId SubDeps -> UnitId -> NeedsBuildOutput
+needsBuildOutput includeDirs unit = go [unit]
+ where
+ isIndef (IndefFullUnitId _ _) = True
+ isIndef _ = False
+ go [] = NoBuildOutput
+ go (u:us) = case Map.lookup u includeDirs of
+ Nothing -> go us
+ Just (SubDeps us' sfp sci sep) ->
+ if any (isIndef . fst) sci
+ then ProduceBuildOutput
+ else go (us++us')
+
+-- | combineEP is used to combine the entrypoints when recursively chasing
+-- through the dependencies of a given entry point. The first parameter is the
+-- current accumulated value, and the second one is the current sub-dependency
+-- being considered. So the bias should be to preserve the type of entrypoint
+-- from the first parameter.
+combineEp Nothing e = e
+combineEp (Just ChSetupEntrypoint) e = e
+combineEp (Just (ChLibEntrypoint es1 os1 ss1)) (ChLibEntrypoint es2 os2 ss2) = (ChLibEntrypoint (nub $ es2++es1) (nub $ os2++os1) (nub $ ss2++ss1))
+combineEp _ e@(ChExeEntrypoint mi os2) = error $ "combineEP: cannot have a sub exe:" ++ show e
+combineEp (Just (ChExeEntrypoint mi os1)) (ChLibEntrypoint es2 os2 ss2) = (ChExeEntrypoint mi (nub $ os1++es2++os2++ss2))
+
+-- no, you unconditionally always wrap the result in Just, so instead of `f x = Just y; f x = Just z` do `f x = y; f x = z` and use f as `Just . f`
+
+
+
+instantiatedGhcPackage :: (ModuleName,OpenModule) -> [(OpenUnitId, ModuleRenaming)]
+instantiatedGhcPackage (_,OpenModule oui@(DefiniteUnitId _) _) = [(oui,DefaultRenaming)]
+instantiatedGhcPackage (_, _) = []
+#endif
+
+initialBuildStepsForAllComponents distdir pd lbi v =
+ initialBuildSteps distdir pd lbi v
+
+
+
+
+
+
+#if !CH_MIN_VERSION_Cabal(1,25,0)
+-- CPP < 1.25
+unFlagName (FlagName n) = n
+-- mkFlagName n = FlagName n
+#endif
+
+toDataVersion :: Version -> DataVersion.Version
+--fromDataVersion :: DataVersion.Version -> Version
+#if CH_MIN_VERSION_Cabal(2,0,0)
+toDataVersion v = DataVersion.Version (versionNumbers v) []
+--fromDataVersion (DataVersion.Version vs _) = mkVersion vs
+#else
+toDataVersion = id
+--fromDataVersion = id
+#endif
+
+componentNameToCh _uid CLibName = ChLibName
+#if CH_MIN_VERSION_Cabal(1,25,0)
+-- CPP >= 1.25
+#if CH_MIN_VERSION_Cabal(2,0,0)
+componentNameToCh uid (CSubLibName n) = ChSubLibName uid
+#else
+componentNameToCh _uid (CSubLibName n) = ChSubLibName (unUnqualComponentName' n)
+#endif
+componentNameToCh uid (CFLibName n) = ChFLibName (unUnqualComponentName' n)
+#endif
+componentNameToCh _uid (CExeName n) = ChExeName (unUnqualComponentName' n)
+componentNameToCh _uid (CTestName n) = ChTestName (unUnqualComponentName' n)
+componentNameToCh _uid (CBenchName n) = ChBenchName (unUnqualComponentName' n)
+
+#if CH_MIN_VERSION_Cabal(1,25,0)
+-- CPP >= 1.25
+unUnqualComponentName' = unUnqualComponentName
+#else
+unUnqualComponentName' = id
+#endif
+
+#if !CH_MIN_VERSION_Cabal(1,25,0)
+-- CPP < 1.25
+componentNameFromComponent (CLib Library {}) = CLibName
+#elif CH_MIN_VERSION_Cabal(1,25,0)
+-- CPP >= 1.25 (redundant)
+componentNameFromComponent (CLib Library { libName = Nothing }) = CLibName
+componentNameFromComponent (CLib Library { libName = Just n }) = CSubLibName n
+componentNameFromComponent (CFLib ForeignLib {..}) = CFLibName foreignLibName
+#endif
+componentNameFromComponent (CExe Executable {..}) = CExeName exeName
+componentNameFromComponent (CTest TestSuite {..}) = CTestName testName
+componentNameFromComponent (CBench Benchmark {..}) = CBenchName benchmarkName
+
+componentOutDir lbi (CLib Library {..})=
+ buildDir lbi
+#if CH_MIN_VERSION_Cabal(2,0,0)
+componentOutDir lbi (CFLib ForeignLib {..}) =
+ componentOutDir' lbi (unUnqualComponentName foreignLibName)
+#endif
+componentOutDir lbi (CExe Executable {..}) =
+ componentOutDir' lbi (unUnqualComponentName' exeName)
+componentOutDir lbi (CTest TestSuite { testInterface = TestSuiteExeV10 _ _, ..}) =
+ componentOutDir' lbi (unUnqualComponentName' testName)
+componentOutDir lbi (CTest TestSuite { testInterface = TestSuiteLibV09 _ _, ..}) =
+ componentOutDir' lbi (unUnqualComponentName' testName ++ "Stub")
+componentOutDir lbi (CBench Benchmark { benchmarkInterface = BenchmarkExeV10 _ _, ..})=
+ componentOutDir' lbi (unUnqualComponentName' benchmarkName)
+
+componentOutDir' :: LocalBuildInfo -> String -> FilePath
+componentOutDir' lbi compName' =
+ ----- Copied from Distribution/Simple/GHC.hs:buildOrReplExe
+ let targetDir = (buildDir lbi) </> compName'
+ compDir = targetDir </> (compName' ++ "-tmp")
+ in compDir
+
+componentEntrypoints :: Component -> ChEntrypoint
+componentEntrypoints (CLib Library {..})
+ = ChLibEntrypoint
+ (map gmModuleName exposedModules)
+ (map gmModuleName $ otherModules libBuildInfo)
+#if CH_MIN_VERSION_Cabal(2,0,0)
+ (map gmModuleName signatures)
+#else
+ [] -- no signatures prior to Cabal 2.0
+#endif
+#if CH_MIN_VERSION_Cabal(2,0,0)
+componentEntrypoints (CFLib (ForeignLib{..}))
+ = ChLibEntrypoint
+ []
+ (map gmModuleName $ otherModules foreignLibBuildInfo)
+ []
+#endif
+componentEntrypoints (CExe Executable {..})
+ = ChExeEntrypoint
+ modulePath
+ (map gmModuleName $ otherModules buildInfo)
+componentEntrypoints (CTest TestSuite { testInterface = TestSuiteExeV10 _ fp, ..})
+ = ChExeEntrypoint fp (map gmModuleName $ otherModules testBuildInfo)
+componentEntrypoints (CTest TestSuite { testInterface = TestSuiteLibV09 _ mn, ..})
+ = ChLibEntrypoint [gmModuleName mn] (map gmModuleName $ otherModules testBuildInfo) []
+componentEntrypoints (CTest TestSuite {})
+ = ChLibEntrypoint [] [] []
+componentEntrypoints (CBench Benchmark { benchmarkInterface = BenchmarkExeV10 _ fp, ..})
+ = ChExeEntrypoint fp (map gmModuleName $ otherModules benchmarkBuildInfo)
+componentEntrypoints (CBench Benchmark {})
+ = ChLibEntrypoint [] [] []
+
+#if CH_MIN_VERSION_Cabal(2,0,0)
+isInplaceCompInc :: ComponentLocalBuildInfo -> (OpenUnitId, ModuleRenaming) -> Bool
+isInplaceCompInc clbi (DefiniteUnitId uid, _mr) = unDefUnitId uid `elem` componentInternalDeps clbi
+isInplaceCompInc clbi (IndefFullUnitId uid _, _mmr) = False
+#endif
+
+#if CH_MIN_VERSION_Cabal(2,0,0)
+isInplaceDep :: LocalBuildInfo -> ComponentLocalBuildInfo -> (UnitId, MungedPackageId) -> Bool
+isInplaceDep lbi clbi (uid, _mpid) = uid `elem` componentInternalDeps clbi
+#else
+isInplaceDep :: LocalBuildInfo -> (InstalledPackageId, PackageId) -> Bool
+# if CH_MIN_VERSION_Cabal(1,23,0)
+-- CPP >= 1.23
+isInplaceDep lbi (ipid, _pid) = localUnitId lbi == ipid
+# else
+-- CPP <= 1.22
+isInplaceDep _lbi (ipid, pid) = inplacePackageId pid == ipid
+# endif
+#endif
+
+#if CH_MIN_VERSION_Cabal(1,22,0)
+-- CPP >= 1.22
+-- >= 1.22 uses NubListR
+nubPackageFlags opts = opts
+#else
+nubPackageFlags opts = opts { ghcOptPackages = nub $ ghcOptPackages opts }
+#endif
+
+renderGhcOptions' :: LocalBuildInfo
+ -> Verbosity
+ -> GhcOptions
+ -> IO [String]
+#if !CH_MIN_VERSION_Cabal(1,20,0)
+renderGhcOptions' lbi v opts = do
+-- CPP < 1.20
+ (ghcProg, _) <- requireProgram v ghcProgram (withPrograms lbi)
+ let Just ghcVer = programVersion ghcProg
+ return $ renderGhcOptions ghcVer opts
+#elif CH_MIN_VERSION_Cabal(1,20,0) && !CH_MIN_VERSION_Cabal(1,24,0)
+renderGhcOptions' lbi _v opts = do
+-- CPP >= 1.20 && < 1.24
+ return $ renderGhcOptions (compiler lbi) opts
+#else
+renderGhcOptions' lbi _v opts = do
+-- CPP >= 1.24
+ return $ renderGhcOptions (compiler lbi) (hostPlatform lbi) opts
+#endif
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