this derivation will be built:
  /nix/store/f6l6i7f6d80i4siiyqq9vf9g38rp8aqq-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/f6l6i7f6d80i4siiyqq9vf9g38rp8aqq-bcachefs-module-7.0.0-38-generic.drv'...