this derivation will be built:
  /nix/store/8mlmjl4mv4yp6iv2mj6988f0zac92pvi-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/8mlmjl4mv4yp6iv2mj6988f0zac92pvi-bcachefs-module-7.0.0-38-generic.drv'...