this derivation will be built:
  /nix/store/4w78l8h2qpd8s0vg211ssb38dh9kfb0l-bcachefs-module-7.0.0-27-generic.drv
building '/nix/store/4w78l8h2qpd8s0vg211ssb38dh9kfb0l-bcachefs-module-7.0.0-27-generic.drv'...