nixpkgs/pkgs/tools/inputmethods/fusuma/gemset.nix

{
  fusuma = {
    groups = ["default"];
    platforms = [];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "163an1yv8lasbdmdjsj2a4byq1rljg7vf5z86ip33xpb9l133xmm";
      type = "gem";
    };
    version = "3.1.0";
  };
}