libraries/installPackage.hs

   1
   2 import Distribution.PackageDescription
   3 import Distribution.Program
   4 import Distribution.Setup
   5 import Distribution.Simple
   6 import Distribution.Simple.Configure
   7 import Distribution.Simple.LocalBuildInfo
   8 import Distribution.Verbosity
   9 import System.Environment
  10
  11 main :: IO ()
  12 main = do args <- getArgs
  13           case args of
  14               destdir : pref : ghcpkg : ghcpkgconf : args' ->
  15                   let verbosity = case args' of
  16                               [] -> normal
  17                               ['-':'v':v] ->
  18                                   let m = case v of
  19                                               "" -> Nothing
  20                                               _ -> Just v
  21                                   in flagToVerbosity m
  22                               _ -> error ("Bad arguments: " ++ show args)
  23                   in doit destdir pref ghcpkg ghcpkgconf verbosity
  24               _ ->
  25                   error "Missing arguments"
  26
  27 doit :: FilePath -> FilePath -> FilePath -> FilePath -> Verbosity -> IO ()
  28 doit destdir pref ghcpkg ghcpkgconf verbosity =
  29        do let userHooks = simpleUserHooks
  30               copyto = if null destdir then NoCopyDest else CopyTo destdir
  31               copyFlags = (emptyCopyFlags copyto) {
  32                               copyVerbose = verbosity
  33                           }
  34               registerFlags = emptyRegisterFlags {
  35                                   regUser = MaybeUserGlobal,
  36                                   regVerbose = verbosity,
  37                                   regGenScript = False,
  38                                   regInPlace = False
  39                               }
  40           lbi <- getPersistBuildConfig
  41           let pd = localPkgDescr lbi
  42               i = installDirTemplates lbi
  43               -- XXX This is an almighty hack, shadowing the base
  44               -- Setup.hs hack
  45               mkLib filt = case library pd of
  46                            Just lib ->
  47                                let ems = filter filt $ exposedModules lib
  48                                in lib {
  49                                       exposedModules = ems
  50                                    }
  51                            Nothing ->
  52                                error "Expected a library, but none found"
  53               -- There's no files for GHC.Prim, so we will fail if we
  54               -- try to copy them
  55               pd_copy = pd { library = Just (mkLib ("GHC.Prim" /=)) }
  56               pd_reg  = pd { library = Just (mkLib (const True)) }
  57               -- When coying, we need to actually give a concrete
  58               -- directory to copy to rather than "$topdir"
  59               i_copy = i { prefixDirTemplate = toPathTemplate pref }
  60               lbi_copy = lbi { installDirTemplates = i_copy }
  61               -- When we run GHC we give it a $topdir that includes the
  62               -- $compiler/lib/ part of libsubdir, so we only want the
  63               -- $pkgid part in the package.conf file. This is a bit of
  64               -- a hack, really.
  65               progs = withPrograms lbi
  66               prog = ConfiguredProgram {
  67                          programId = programName ghcPkgProgram,
  68                          programVersion = Nothing,
  69                          programArgs = ["--global-conf", ghcpkgconf],
  70                          programLocation = UserSpecified ghcpkg
  71                      }
  72               progs' = updateProgram prog progs
  73               i_reg = i { libSubdirTemplate = toPathTemplate "$pkgid" }
  74               lbi_reg = lbi { installDirTemplates = i_reg,
  75                               withPrograms = progs' }
  76           (copyHook simpleUserHooks) pd_copy lbi_copy userHooks copyFlags
  77           (regHook simpleUserHooks)  pd_reg  lbi_reg  userHooks registerFlags
  78           return ()
  79