this derivation will be built:
  /nix/store/hkzlvh1wlmx94war2b29a875w3g85v3d-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/hkzlvh1wlmx94war2b29a875w3g85v3d-bcachefs-module-7.0.0-29-generic.drv'...