gerber-diagrams failing to build glib with syntax error

[heath]

Nice library! I'm receiving this error when attempting to build gerber-diagrams within a nix-shell:

[13 of 16] Compiling Gerber.Evaluate.GraphicsState ( lib/Gerber/Evaluate/GraphicsState.hs, /Users/heath/local/haskell-gerber/dist-newstyle/build/x86_64-osx/ghc-8.6.5/gerber-0.2.0.0/build/Gerber/Evaluate/GraphicsState.o ) [Data.Monoid.Deletable changed]
[15 of 16] Compiling Gerber.Grammar   ( lib/Gerber/Grammar.hs, /Users/heath/local/haskell-gerber/dist-newstyle/build/x86_64-osx/ghc-8.6.5/gerber-0.2.0.0/build/Gerber/Grammar.o ) [Text.Megaparsec.Char changed]

lib/Gerber/Grammar.hs:304:7: warning: [-Wname-shadowing]
    This binding for ‘negative’ shadows the existing binding
      defined at lib/Gerber/Grammar.hs:59:1
    |
304 |       negative <-
    |       ^^^^^^^^
Building     cairo-0.13.8.0 (all, legacy fallback)
Building     glib-0.13.8.0 (all, legacy fallback)
[16 of 16] Compiling Gerber.Evaluate  ( lib/Gerber/Evaluate.hs, /Users/heath/local/haskell-gerber/dist-newstyle/build/x86_64-osx/ghc-8.6.5/gerber-0.2.0.0/build/Gerber/Evaluate.o ) [Control.Foldl changed]
Installing   cairo-0.13.8.0 (all, legacy fallback)
Completed    cairo-0.13.8.0 (all, legacy fallback)

Failed to build glib-0.13.8.0.
Build log ( /Users/heath/.cabal/logs/ghc-8.6.5/glb-0.13.8.0-fc8e21b9.log ):
[1 of 1] Compiling Main             ( /Users/heath/local/haskell-gerber/dist-newstyle/tmp/src-20000/glib-0.13.8.0/dist/setup/setup.hs, /Users/heath/local/haskell-gerber/dist-newstyle/tmp/src-20000/glib-0.13.8.0/dist/setup/Main.o )
Linking /Users/heath/local/haskell-gerber/dist-newstyle/tmp/src-20000/glib-0.13.8.0/dist/setup/setup ...
Configuring glib-0.13.8.0...
Preprocessing library for glib-0.13.8.0..
setup: Error in C header file.

/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/time.h:154: (column 17) [FATAL]
  >>> Syntax error!
  The symbol `__attribute__' does not fit here.

cabal: Failed to build glib-0.13.8.0 (which is required by exe:render-gerbers
from gerber-diagrams-0.1.0.0). See the build log above for details.

It was also complaining about missing z, but I was able to get around that by adding zlib to the required packages. I'm putting this error here in case someone else wants to tackle it 🙂 This is being built on MacOS 10.15.

Original and complete error at https://gist.github.com/heath/bbf35dc2708e530c8b1180a8c8d9e8b1