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.Cmd
  10 import System.Environment
  11
  12 main :: IO ()
  13 main = do args <- getArgs
  14           case args of
  15               pref : ghcpkg : args' ->
  16                   let verbosity = case args' of
  17                               [] -> normal
  18                               ['-':'v':v] ->
  19                                   let m = case v of
  20                                               "" -> Nothing
  21                                               _ -> Just v
  22                                   in flagToVerbosity m
  23                               _ -> error ("Bad arguments: " ++ show args)
  24                   in doit pref ghcpkg verbosity
  25               _ ->
  26                   error "Missing arguments"
  27
  28 doit :: FilePath -> FilePath -> Verbosity -> IO ()
  29 doit pref ghcpkg verbosity =
  30        do let userHooks = simpleUserHooks
  31               copyFlags = CopyFlags {
  32                               copyDest = NoCopyDest,
  33                               copyVerbose = verbosity
  34                           }
  35               registerFlags = RegisterFlags {
  36                                   regUser = MaybeUserGlobal,
  37                                   regGenScript = False,
  38                                   regInPlace = False,
  39                                   regWithHcPkg = Just ghcpkg,
  40                                   regVerbose = verbosity
  41                               }
  42           pdFile <- defaultPackageDesc verbosity
  43           pd <- readPackageDescription verbosity pdFile
  44           lbi <- getPersistBuildConfig
  45           let -- XXX This is an almighty hack, shadowing the base Setup.hs hack
  46               lib' = case library pd of
  47                          Just lib ->
  48                              lib {
  49                                  exposedModules = filter (("GHC.Prim" /=))
  50                                                 $ exposedModules lib
  51                                  }
  52                          Nothing ->
  53                              error "Expected a library, but none found"
  54               pd' = pd { library = Just lib' }
  55               -- When coying, we need to actually give a concrete
  56               -- directory to copy to rather than "$topdir"
  57               lbi_copy = lbi { prefix = pref }
  58               -- When we run GHC we give it a $topdir that includes the
  59               -- $compiler/lib/ part of libsubdir, so we only want the
  60               -- $pkgid part in the package.conf file. This is a bit of
  61               -- a hack, really.
  62               lbi_register = lbi { libsubdir = "$pkgid" }
  63           (copyHook simpleUserHooks) pd' lbi_copy userHooks copyFlags
  64           (regHook simpleUserHooks) pd' lbi_register userHooks registerFlags
  65           return ()
  66