trivial-clock: remove override - use version from quicklisp

    ];

  };

  trivial-clock = build-asdf-system {

    pname = "trivial-clock";

    version = "trunk";

    src = pkgs.fetchFromGitHub {

      owner = "ak-coram";

      repo = "cl-trivial-clock";

      rev = "641e12ab1763914996beb1ceee67aabc9f1a3b1e";

      hash = "sha256-mltQEJ2asxyQ/aS/9BuWmN3XZ9bGmmkopcF5YJU1cPk=";

    };

    systems = [ "trivial-clock" "trivial-clock/test" ];

    lispLibs = [ self.cffi self.fiveam ];

  };

  frugal-uuid = build-asdf-system {

    pname = "frugal-uuid";

    version = "trunk";