nixpkgs/pkgs/tools/text/bcat/gemset.nix

{
  bcat = {
    dependencies = ["rack"];
    source = {
      remotes = ["http://rubygems.org"];
      sha256 = "0w2wwlngcs7f4lmvifixrb89bjkw2lx8z0nn72w360hz394ic651";
      type = "gem";
    };
    version = "0.6.2";
  };
  rack = {
    source = {
      remotes = ["http://rubygems.org"];
      sha256 = "19m7aixb2ri7p1n0iqaqx8ldi97xdhvbxijbyrrcdcl6fv5prqza";
      type = "gem";
    };
    version = "1.6.8";
  };
}