this derivation will be built:
  /nix/store/dw7xnh08db36vfdx4y2i3f34807kmmcx-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/dw7xnh08db36vfdx4y2i3f34807kmmcx-bcachefs-module-7.0.0-31-generic.drv'...