Requires substituter of target architecture because of cabal2nix

[bouk]

If I use nixos-rebuild on a remote target with a different architecture as my machine (e.g. from my macOS to a Linux machine) I get an error like: error: a 'x86_64-linux' with features {} is required to build '/nix/store/c65zfmmkxdzl37nfi1q7ka0if8hcg6cy-cabal2nix-2.19.1.drv'

It's because cabal2nix uses IFD for translating the .cabal file. I wonder if that generated config can be committed to the repo somehow so we can avoid it?

[Gabriella439]

Did you use the --build-host option of nixos-rebuild to build on the target?

[bouk]

Yes, but that doesn't help with IFD unfortunately because it needs to evaluate the derivation on the host side before starting the build