this derivation will be built:
  /nix/store/r21fpgsh001j1jyk5fpyhvfhga0d2bn0-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/r21fpgsh001j1jyk5fpyhvfhga0d2bn0-bcachefs-module-7.0.0-29-generic.drv'...