Wrong yubikey is used

[TornaxO7]

Hello!
I have two yubikeys as you can see here: https://github.com/TornaxO7/dotfiles/blob/nixos/secrets/secrets.nix

Now the problem is, that whenever I'm rebuilding my system, it always asks only for one yubikey (and requests it). I'm getting the following message, if I'm trying to use my yubikey on my laptop:

Please insert YubiKey with serial 20684931

the yubikey with serial 20684931 is my pc-yubikey.
Do you have an idea how I can fix this?

I've tried to manually decrypt my .age file with both keys and it works with both.

[TornaxO7]

Ok, I think that I'm getting closer to the culprit. It's basically age.identityPaths.

If I set it to

    age.identityPaths = [ pc_key ];

or

    age.identityPaths = [ laptop_key ];

then I can use the suitable keys. But adding both yubikeys to this list will let agenix try only the first key and stop in this never ending loop.

[TornaxO7]

Ok, so my current workaround this is, that each system-configuration has to provide the path to their key as well. Hence filling this array above when building the system.

However, if anyone finds a better solution for this: I'd be glad if you could share it here :)