nixpkgs-suyu/pkgs/development/tools/icr/shards.nix

{
  readline = {
    owner = "crystal-lang";
    repo = "crystal-readline";
    rev = "0fb7d186da8e1b157998d98d1c96e99699b791eb";
    sha256 = "1rk27vw3ssldgnfgprwvz2gag02v4g6d6yg56b3sk9w3fn8jyyi8";
  };
}