this derivation will be built:
  /nix/store/ibfp974sz3j16zbq0gvpf5193jgrq646-bcachefs-module-7.0.0-28-generic.drv
building '/nix/store/ibfp974sz3j16zbq0gvpf5193jgrq646-bcachefs-module-7.0.0-28-generic.drv'...