this derivation will be built:
  /nix/store/135y5wy2928ihbidcdwsdfav5pkq3wf5-bcachefs-module-7.0.0-30-generic.drv
building '/nix/store/135y5wy2928ihbidcdwsdfav5pkq3wf5-bcachefs-module-7.0.0-30-generic.drv'...