this derivation will be built:
  /nix/store/1qk664q2qgw2lls6zrlfmzg17f9qnjhh-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/1qk664q2qgw2lls6zrlfmzg17f9qnjhh-bcachefs-module-7.0.0-39-generic.drv'...