@stick nice! I maintain some trezor stuff in nixpkgs, happy to help if you have any questions!
@jb55 👋 I have one, but it is embedded development specific; see https://discourse.nixos.org/t/gcc-arm-embedded-gcc-7/1023
@stick which version of nixpkgs are you on? I just packaged version 7 and could send you a patch for testing.
@stick emailed you the patch, it's also at https://jb55.com/s/0001-gcc-arm-embedded-latest-init-at-7-2018-q2.patch
let me know if that works, haven't updated the darwin hash yet.