nixpkgs/pkgs/development/tools/cadre/gemset.nix

{
  cadre = {
    dependencies = ["thor" "tilt" "valise"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "07q60s1bm2xar46g00ls5fjkn6dm2kfxhsz9ayblc31x5kr8d83a";
      type = "gem";
    };
    version = "1.0.4";
  };
  thor = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1yhrnp9x8qcy5vc7g438amd5j9sw83ih7c30dr6g6slgw9zj3g29";
      type = "gem";
    };
    version = "0.20.3";
  };
  tilt = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0ca4k0clwf0rkvy7726x4nxpjxkpv67w043i39saxgldxd97zmwz";
      type = "gem";
    };
    version = "2.0.9";
  };
  valise = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1arsbmk2gifrhv244qrld7s3202xrnxy6vlc5gqklg70dpsinbn5";
      type = "gem";
    };
    version = "1.2.1";
  };
}