this derivation will be built:
  /nix/store/l22rfdc17a7473y8jm9wnniiprd4w1z5-bcachefs-module-7.0.0-28-generic.drv
building '/nix/store/l22rfdc17a7473y8jm9wnniiprd4w1z5-bcachefs-module-7.0.0-28-generic.drv'...