= note: ld: library not found for -liconv
          clang-7: error: linker command failed with exit code 1 (use -v to see invocation)

I'm not sure why this is failing on macOS

@zimbatm shouldn't the override appends to the treefmt buildInputs? e.g. to keep that definition:

doh. that's probably it :)

@TristanCacqueray nativeBuildInputs probably also needs to be concatenated with prev.nativeBuildInputs

@zimbatm oh, ok I've squashed the change. We'll get through this eventually :)

success!

nice, thanks!