this derivation will be built:
  /nix/store/6qvnrh0f615r1wfbhxz0bczsazmql6n6-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/6qvnrh0f615r1wfbhxz0bczsazmql6n6-bcachefs-module-7.0.0-29-generic.drv'...