this derivation will be built:
  /nix/store/fjz0kjf8656yn96jkx9fc491xhg2x60m-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/fjz0kjf8656yn96jkx9fc491xhg2x60m-bcachefs-module-7.0.0-39-generic.drv'...