Hello, When I depend on the GLUT Haskell package (2.6 or newer) on GHC 7.10.1 on OS X 10.10.3, the GLUT package builds and installs successfully, but applications that depend on GLUT fail during cabal install with this kind of linking error: can't load .so/.DLL for: /Users/jd/sandbox/.cabal-sandbox/lib/x86_64-osx-ghc-7.10.1/GLUT_J2ZZFJOYOcH4hQYFlXhEPp/libHSGLUT-2.7.0.1-0waW9bZutCf5s5H5zSV4Oh-ghc7.10.1.dylib (dlopen(/Users/jd/sandbox/.cabal-sandbox/lib/x86_64-osx-ghc-7.10.1/GLUT_J2ZZFJOYOcH4hQYFlXhEPp/libHSGLUT-2.7.0.1-0waW9bZutCf5s5H5zSV4Oh-ghc7.10.1.dylib, 5): Symbol not found: _glutBitmap8By13 Referenced from: /Users/jdsandbox/.cabal-sandbox/lib/x86_64-osx-ghc-7.10.1/GLUT_J2ZZFJOYOcH4hQYFlXhEPp/libHSGLUT-2.7.0.1-0waW9bZutCf5s5H5zSV4Oh-ghc7.10.1.dylib Expected in: flat namespace in /Users/jd/sandbox/.cabal-sandbox/lib/x86_64-osx-ghc-7.10.1/GLUT_J2ZZFJOYOcH4hQYFlXhEPp/libHSGLUT-2.7.0.1-0waW9bZutCf5s5H5zSV4Oh-ghc7.10.1.dylib) Occurs when trying to load GLUT to GHCi. $ ghci -package GLUT I tried loading the OSX's GLUT.framework manually: $ ghci -framework GLUT -package GLUT but it produces the same error message. To be sure I checked the OSX's GLUT.framework, it does contain the _glutBitmap8By13 symbol. It's also worth noticing that this only occurs on OS X with GHC 7.10.1 and cabal 1.22.*. linux + ghc 7.10.1 = Ok mac + ghc 7.10.1 = Fail mac + ghc 7.8.4 = Ok I'm not sure if this is a GHC or Cabal bug, but something is working differently on Mac with GHC 7.10.1/cabal 1.22.* Did you guys encounter something similar, is there a work-around we can do inside the GLUT Haskell package?