this derivation will be built:
  /nix/store/k7pb501kadsgwi63asc7yjzj3vk27h50-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/k7pb501kadsgwi63asc7yjzj3vk27h50-bcachefs-module-7.0.0-39-generic.drv'...