libraries/installPackage.hs

   1
   2 import Distribution.PackageDescription
   3 import Distribution.Setup
   4 import Distribution.Simple
   5 import Distribution.Simple.Configure
   6 import Distribution.Simple.LocalBuildInfo
   7 import Distribution.Simple.Utils
   8 import Distribution.Verbosity
   9 import System.Environment
  10
  11 main :: IO ()
  12 main = do args <- getArgs
  13           let verbosity = case args of
  14                               [] -> normal
  15                               ['-':'v':v] ->
  16                                   let m = case v of
  17                                               "" -> Nothing
  18                                               _ -> Just v
  19                                   in flagToVerbosity m
  20                               _ -> error ("Bad arguments: " ++ show args)
  21               userHooks = simpleUserHooks
  22               installFlags = InstallFlags {
  23                                  installUserFlags = MaybeUserGlobal,
  24                                  installVerbose = verbosity
  25                              }
  26           pdFile <- defaultPackageDesc verbosity
  27           pd <- readPackageDescription verbosity pdFile
  28           lbi <- getPersistBuildConfig
  29           let -- XXX This is an almighty hack, shadowing the base Setup.hs hack
  30               lib' = case library pd of
  31                          Just lib ->
  32                              lib {
  33                                  exposedModules = filter (("GHC.Prim" /=))
  34                                                 $ exposedModules lib
  35                                  }
  36                          Nothing ->
  37                              error "Expected a library, but none found"
  38               pd' = pd { library = Just lib' }
  39               -- When installing we need to use the non-inplace ghc-pkg.
  40               -- We also set the compiler to be non-inplace, but that
  41               -- probably doesn't matter.
  42               c = compiler lbi
  43               c' = c { compilerPath = dropInPlace (compilerPath c),
  44                        compilerPkgTool = dropInPlace (compilerPkgTool c)
  45                      }
  46               lbi' = lbi { compiler = c' }
  47           (instHook simpleUserHooks) pd' lbi' userHooks installFlags
  48
  49 dropInPlace :: FilePath -> FilePath
  50 dropInPlace "" = ""
  51 dropInPlace xs@(x:xs') = case dropPrefix "-inplace" xs of
  52                              Nothing -> x : dropInPlace xs'
  53                              Just xs'' -> dropInPlace xs''
  54
  55 dropPrefix :: Eq a => [a] -> [a] -> Maybe [a]
  56 dropPrefix [] ys = Just ys
  57 dropPrefix (x:xs) (y:ys)
  58  | x == y = dropPrefix xs ys
  59 dropPrefix _ _ = Nothing
  60