this derivation will be built:
  /nix/store/qa65fnjx2216fjdv95hjcmbw2icfiqa5-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/qa65fnjx2216fjdv95hjcmbw2icfiqa5-bcachefs-module-7.0.0-38-generic.drv'...