this derivation will be built:
  /nix/store/4zf2g5qpp9nr3j80kqfj7md7l3j3slfq-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/4zf2g5qpp9nr3j80kqfj7md7l3j3slfq-bcachefs-module-7.0.0-39-generic.drv'...