cccc: mark for removal (`gcc-15` build failure) (#483637)

    platforms = lib.platforms.unix;

    maintainers = [ ];

    # The last successful Darwin Hydra build was in 2023

    broken = stdenv.hostPlatform.isDarwin;

    # On linux fails to build on gcc-15, needs porting to c23, but

    # the upstream code did not update since 2006.

    broken = true;

  };

}