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module Rules.Dependencies (buildPackageDependencies) where
import Data.Bifunctor
import Data.Function
import Base
import Context
import Expression
import Hadrian.BuildPath
import Oracles.ModuleFiles
import Rules.Generate
import Settings
import Target
import Utilities
import Packages
import qualified Data.Map as M
import qualified Text.Parsec as Parsec
-- These modules use DeriveLift which needs Language.Haskell.TH.Lib.Internal but
-- the dependency is implicit. ghc -M should emit this additional dependency but
-- until it does we need to add this dependency ourselves.
extra_dependencies :: M.Map Package (Stage -> Action [(FilePath, FilePath)])
extra_dependencies =
M.fromList [(containers, fmap sequence (sequence
[dep (containers, "Data.IntSet.Internal") th_internal
,dep (containers, "Data.Set.Internal") th_internal
,dep (containers, "Data.Sequence.Internal") th_internal
,dep (containers, "Data.Graph") th_internal
]))
]
where
th_internal = (templateHaskell, "Language.Haskell.TH.Lib.Internal")
dep (p1, m1) (p2, m2) s = (,) <$> path s p1 m1 <*> path s p2 m2
path stage p m =
let context = Context stage p vanilla Inplace
in objectPath context . moduleSource $ m
formatExtra :: (FilePath, FilePath) -> String
formatExtra (fp1, fp2) = fp1 ++ ":" ++ fp2 ++ "\n"
buildPackageDependencies :: [(Resource, Int)] -> Rules ()
buildPackageDependencies rs = do
root <- buildRootRules
root -/- "**/.dependencies.mk" %> \mk -> do
DepMkFile stage pkgpath <- getDepMkFile root mk
let pkg = unsafeFindPackageByPath pkgpath
context = Context stage pkg vanilla Inplace
extra <- maybe (return []) ($ stage) $ M.lookup pkg extra_dependencies
srcs <- hsSources context
gens <- interpretInContext context generatedDependencies
need (srcs ++ gens)
if null srcs
then writeFileChanged mk ""
else buildWithResources rs $ target context
(Ghc FindHsDependencies $ Context.stage context) srcs [mk]
liftIO $ mapM_ (appendFile mk . formatExtra) extra
removeFile $ mk <.> "bak"
root -/- "**/.dependencies" %> \deps -> do
mkDeps <- readFile' (deps <.> "mk")
writeFileChanged deps . unlines
. map (\(src, deps) -> unwords $ src : deps)
. map (bimap unifyPath (map unifyPath))
. map (bimap head concat . unzip)
. groupBy ((==) `on` fst)
. sortBy (compare `on` fst)
$ parseMakefile mkDeps
data DepMkFile = DepMkFile Stage FilePath deriving (Eq, Show)
parseDepMkFile :: FilePath -> Parsec.Parsec String () DepMkFile
parseDepMkFile root = do
_ <- Parsec.string root *> Parsec.optional (Parsec.char '/')
stage <- parseStage
_ <- Parsec.char '/'
pkgPath <- Parsec.manyTill Parsec.anyChar
(Parsec.try $ Parsec.string "/.dependencies.mk")
return (DepMkFile stage pkgPath)
getDepMkFile :: FilePath -> FilePath -> Action DepMkFile
getDepMkFile root = parsePath (parseDepMkFile root) "<dependencies file>"
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