sb-cga: remove override - use version from quicklisp

    ];

  };

  sb-cga = build-asdf-system {

    pname = "sb-cga";

    version = "1.0.1";

    src = pkgs.fetchFromGitHub {

      owner = "nikodemus";

      repo = "sb-cga";

      rev = "9a554ea1c01cac998ff7eaa5f767bc5bcdc4c094";

      sha256 = "sha256-iBM+VXu6JRqGmeIFzfXbGot+elvangmfSpDB7DjFpPg";

    };

    lispLibs = [ self.alexandria ];

  };

  nsb-cga = super.nsb-cga.overrideLispAttrs (oa: {

    lispLibs = oa.lispLibs ++ [ self.sb-cga ];

  });