gi-*: help the build find required gir files

Author: peti

distribution-nixpkgs/src/Distribution/Nixpkgs/Haskell/FromCabal/PostProcess.hs

@@ -49,6 +49,11 @@ hooks =
   , ("eventstore", over (metaSection . platforms) (Set.filter (\(Platform arch _) -> arch == X86_64)))
   , ("freenect < 1.2.1", over configureFlags (Set.union (Set.fromList ["--extra-include-dirs=${pkgs.freenect}/include/libfreenect", "--extra-lib-dirs=${pkgs.freenect}/lib"])))
   , ("gf", set phaseOverrides gfPhaseOverrides . set doCheck False)
+  , ("gi-cairo", giPhaseOverrides)      -- https://github.com/haskell-gi/haskell-gi/issues/36
+  , ("gi-gio", giPhaseOverrides)        -- https://github.com/haskell-gi/haskell-gi/issues/36
+  , ("gi-glib", giPhaseOverrides)       -- https://github.com/haskell-gi/haskell-gi/issues/36
+  , ("gi-gobject", giPhaseOverrides)    -- https://github.com/haskell-gi/haskell-gi/issues/36
+  , ("gi-pango", giPhaseOverrides)      -- https://github.com/haskell-gi/haskell-gi/issues/36
   , ("gio", set (libraryDepends . pkgconfig . contains "system-glib = pkgs.glib") True)
   , ("git-annex", gitAnnexHook)
   , ("github-backup", set (executableDepends . tool . contains (pkg "git")) True)
@@ -238,6 +243,11 @@ stackOverrides = unlines
   , "'';"
   ]
 
+giPhaseOverrides :: Derivation -> Derivation
+giPhaseOverrides
+  = set phaseOverrides "preConfigure = \"export HASKELL_GI_GIR_SEARCH_PATH=${gobjectIntrospection.dev}/share/gir-1.0\";"
+  . set (libraryDepends . pkgconfig . contains (pkg "gobjectIntrospection")) True
+
 {-
 postProcess' :: Derivation -> Derivation
 postProcess' deriv@(MkDerivation {..})