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

{
  fusuma = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0hj64kafxj29gk53vj2syhs3vdywl3h9cpiknaqqm4srjx9g04a0";
      type = "gem";
    };
    version = "0.10.2";
  };
}