this derivation will be built:
  /nix/store/ll3yh08vb8mx7hiisynd79aapq7d4qr6-bcachefs-module-7.0.0-27-generic.drv
building '/nix/store/ll3yh08vb8mx7hiisynd79aapq7d4qr6-bcachefs-module-7.0.0-27-generic.drv'...