this derivation will be built:
  /nix/store/9r97yikdj6s2jrk3vyi5jz7np781g64n-bcachefs-module-7.1.5-arch1-2.drv
building '/nix/store/9r97yikdj6s2jrk3vyi5jz7np781g64n-bcachefs-module-7.1.5-arch1-2.drv'...