this derivation will be built:
  /nix/store/fg2bvvi0zhy8jhm975wv2a902vl1c523-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/fg2bvvi0zhy8jhm975wv2a902vl1c523-bcachefs-module-7.0.0-29-generic.drv'...