this derivation will be built:
  /nix/store/h43k2hn7n6s2gzgi4v4jh67xfl7zsmww-bcachefs-module-7.0.0-27-generic.drv
building '/nix/store/h43k2hn7n6s2gzgi4v4jh67xfl7zsmww-bcachefs-module-7.0.0-27-generic.drv'...