this derivation will be built:
  /nix/store/642rs5xf5w77xr6k1gwcqw30h213zzph-bcachefs-module-7.1.5-arch1-2.drv
building '/nix/store/642rs5xf5w77xr6k1gwcqw30h213zzph-bcachefs-module-7.1.5-arch1-2.drv'...