Made OpenGL a propagated dependency for mesa on darwin (fixes a host of building errors, especially in haskell pacakges). Also fixed freeglut on darwin.

Signed-off-by: Pamelloes <[e-mail]>

pkgs/development/libraries/freeglut/default.nix

···
 
   buildInputs = [ libXi libXrandr libXxf86vm mesa xlibsWrapper cmake ];
 
+  cmakeFlags = stdenv.lib.optionals stdenv.isDarwin [
+                 "-DOPENGL_INCLUDE_DIR=${mesa}/include"
+                 "-DOPENGL_gl_LIBRARY:FILEPATH=${mesa}/lib/libGL.dylib"
+                 "-DOPENGL_glu_LIBRARY:FILEPATH=${mesa}/lib/libGLU.dylib"
+                 "-DFREEGLUT_BUILD_DEMOS:BOOL=OFF"
+                 "-DFREEGLUT_BUILD_STATIC:BOOL=OFF"
+               ];
+
   meta = with stdenv.lib; {
     description = "Create and manage windows containing OpenGL contexts";
     longDescription = ''

pkgs/development/libraries/mesa-darwin/default.nix

···
       libffi libvdpau
     ] ++ stdenv.lib.optionals stdenv.isDarwin [ OpenGL apple_sdk.sdk Xplugin ];
 
+    propagatedBuildInputs = stdenv.lib.optionals stdenv.isDarwin [ OpenGL ];
+
     postUnpack = ''
       ln -s darwin $sourceRoot/configs/current
     '';