this derivation will be built:
  /nix/store/r6lxhhnva0r2jdk7746sdzh057s80zr6-bcachefs-module-7.0.0-30-generic.drv
building '/nix/store/r6lxhhnva0r2jdk7746sdzh057s80zr6-bcachefs-module-7.0.0-30-generic.drv'...