Failed to Activate Swap swapon at Install Time

Been using NixOS both 23.11 and 24.05 and have had great luck with creating swapfiles in Configuration.Nix but I have never been able to at install time.

This has happened with probably half a dozen different USBs, different computers. KDE 5 and 6.

Anyone else have this issue? I can create the swap just not during the install, only after.

Would be nice to have from the beginning as I do a lot of deployments onto lowram systems.