this derivation will be built:
  /nix/store/hk9z3iz35ylhjggmi64cvnm60h9yssml-bcachefs-module-7.0.0-30-generic.drv
building '/nix/store/hk9z3iz35ylhjggmi64cvnm60h9yssml-bcachefs-module-7.0.0-30-generic.drv'...