{...}: rec {
  # REF: https://github.com/nix-systems/nix-systems
  archs = {
    x86_64 = "x86_64";
    aarch64 = "aarch64";
    riscv64 = "riscv64";
  };

  osnames = {
    linux = "linux";
    darwin = "darwin";
  };

  systemName = arch: osname: "${arch}-${osname}";

  systems = let
    mkSystem = arch: osname: let x = systemName arch osname; in {x = x;};
  in
    with archs;
    with osnames; {
      inherit (mkSystem x86_64 linux);
      inherit (mkSystem x86_64 darwin);
      inherit (mkSystem aarch64 linux);
      inherit (mkSystem aarch64 darwin);
      inherit (mkSystem riscv64 linux);
    };
}