this derivation will be built:
  /nix/store/19q71484808grm4p427lkj12sakwib6i-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/19q71484808grm4p427lkj12sakwib6i-bcachefs-module-7.0.0-39-generic.drv'...