this derivation will be built:
  /nix/store/xfnvsxm2ma671d22k80f31shri7c9zz6-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/xfnvsxm2ma671d22k80f31shri7c9zz6-bcachefs-module-7.0.0-38-generic.drv'...