Compiling using Nix on ghc 9.2.4 produced -Wunused-top-binds error

[danwdart]

I'm not sure if there's something about -Werror here but I get the following trying to build:

error: builder for '/nix/store/fdd1rsmjp85hp910i1cc38m9wnkwh03r-graphite-0.10.0.1.drv' failed with exit code 1;
       last 10 log lines:
       >     Defined but not used: ‘isDirectedGraphic’
       >    |
       > 60 | isDirectedGraphic = undefined
       >    | ^^^^^^^^^^^^^^^^^
       >
       > src/Data/Graph/UGraph/DegreeSequence.hs:71:1: warning: [-Wunused-top-binds]
       >     Defined but not used: ‘fromGraphicalSequence’
       >    |
       > 71 | fromGraphicalSequence = undefined
       >    | ^^^^^^^^^^^^^^^^^^^^^
       For full logs, run 'nix log /nix/store/fdd1rsmjp85hp910i1cc38m9wnkwh03r-graphite-0.10.0.1.drv'.
error: 1 dependencies of derivation '/nix/store/mv9i7km3zsf0j1npgavgjqnx9y93kslv-ghc-9.2.4-with-packages.drv' failed to build

Not sure here, could just patch to use -Wno-unused-top-binds in the file until that's finished?

Thanks