Trying to use GLFW instead of GLUT

[greg travis]

I'm trying to switch from GLUT to GLFW (in the hopes of no longer requiring XQuartz). Trying to run ghci, I'm getting a missing symbol:

Symbol not found: _glosszm1zi13zi1zi1zm2SbZZzz2OFJmq7Y0azz9tdhW7_GraphicsziGlossziInternalsziInterfaceziBackendziGLUT_glutStateInit_closure

I'm using stack. My cabal file has GLFW-b and gloss listed, and I added this section to stack.yaml:

flags:

  gloss:

    GLFW: true

    GLUT: false

But it looks like it's still trying to build against GLUT.

When I run it as a standalone executable, it immediately shuts down without an error message. In ghci I get the error message above.

Is there a way to force it to use GLFW?

Full error:

<command line>: can't load .so/.DLL for: /Users/gmt/.stack/snapshots/x86_64-osx/3671c966043fb4524fa957e5dac9cc3fc25b01d7ec3f88305b1ec533a7da6d13/8.6.5/lib/x86_64-osx-ghc-8.6.5/libHSgloss-1.13.1.1-2SbZz2OFJmq7Y0az9tdhW7-ghc8.6.5.dylib (dlopen(/Users/gmt/.stack/snapshots/x86_64-osx/3671c966043fb4524fa957e5dac9cc3fc25b01d7ec3f88305b1ec533a7da6d13/8.6.5/lib/x86_64-osx-ghc-8.6.5/libHSgloss-1.13.1.1-2SbZz2OFJmq7Y0az9tdhW7-ghc8.6.5.dylib, 5): Symbol not found: _glosszm1zi13zi1zi1zm2SbZZzz2OFJmq7Y0azz9tdhW7_GraphicsziGlossziInternalsziInterfaceziBackendziGLUT_glutStateInit_closure

  Referenced from: /Users/gmt/.stack/snapshots/x86_64-osx/3671c966043fb4524fa957e5dac9cc3fc25b01d7ec3f88305b1ec533a7da6d13/8.6.5/lib/x86_64-osx-ghc-8.6.5/libHSgloss-1.13.1.1-2SbZz2OFJmq7Y0az9tdhW7-ghc8.6.5.dylib

  Expected in: flat namespace

 in /Users/gmt/.stack/snapshots/x86_64-osx/3671c966043fb4524fa957e5dac9cc3fc25b01d7ec3f88305b1ec533a7da6d13/8.6.5/lib/x86_64-osx-ghc-8.6.5/libHSgloss-1.13.1.1-2SbZz2OFJmq7Y0az9tdhW7-ghc8.6.5.dylib)