this derivation will be built:
  /nix/store/9rnhzra3lgrwqv1l3jzal0js5vp5vj7y-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/9rnhzra3lgrwqv1l3jzal0js5vp5vj7y-bcachefs-module-7.0.0-39-generic.drv'...