this derivation will be built:
  /nix/store/vlnm15xjm47wr9g227s75d6lyl3mkmnm-bcachefs-module-7.0.0-30-generic.drv
building '/nix/store/vlnm15xjm47wr9g227s75d6lyl3mkmnm-bcachefs-module-7.0.0-30-generic.drv'...