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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 qualified Text.Parsec as Parsec
buildPackageDependencies :: [(Resource, Int)] -> Rules ()
buildPackageDependencies rs = do
root <- buildRootRules
root -/- "**/.dependencies.mk" %> \mk -> do
DepMkFile stage pkgpath <- getDepMkFile root mk
let context = Context stage (unsafeFindPackageByPath pkgpath) vanilla
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]
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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