```
{config, pkgs, lib, ...}: (let
  nix-misc = (import /home/linus/projects/clever-nix-misc {inherit pkgs;});
in {
  nix.package = nix-misc.nix;
  environment.systemPackages = [ nix-misc.qemu-user-arm ];
  nix.sandboxPaths = [ "${nix-misc.qemu-user-arm}" ];
  nix.extraOptions = ''
    build-extra-platforms = armv7l-linux
  '';
  nix.binaryCaches = [ https://www.cs.helsinki.fi/u/tmtynkky/nixos-arm/channel ];
  nix.binaryCachePublicKeys = [ "nixos-arm.dezgeg.me-1:xBaUKS3n17BZPKeyxL4JfbTqECsT+ysbDJz29kLFRW0=%" ];
})
```