this derivation will be built:
  /nix/store/ac9kcaif76wc1jla3xbqlymh6z8xq2vr-bcachefs-module-7.0.0-28-generic.drv
building '/nix/store/ac9kcaif76wc1jla3xbqlymh6z8xq2vr-bcachefs-module-7.0.0-28-generic.drv'...