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

{
  "gist" = {
    version = "4.3.0";
    source = {
      type = "gem";
      sha256 = "0az6l8nq433sszailr7kglh21l3gkcb11k7ag6668nyxxplm9rp0";
    };
  };
}