I had to write a systemd timer to rescan PCIe ports about ten seconds after the computer starts. I was able to add that to my NixOS config and it worked how I

I had to write a systemd timer to rescan PCIe ports about ten seconds after the computer starts. I was able to add that to my NixOS config and it worked how I wanted, and it was great because if I had broken anything all I would have to do is reboot and choose an older generation.