this derivation will be built:
  /nix/store/g9b4gbsfklc3v8m55kavf1kjzl0j518r-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/g9b4gbsfklc3v8m55kavf1kjzl0j518r-bcachefs-module-7.0.0-38-generic.drv'...