UX: Why not support for YubiKey NEO?

[AnomalRoil]

What were you trying to do

Setting up an age key on my YubiKey Neo.

What happened

All want well until it asked me to touch the YK and failed (I've added the final response from my YK):

age-plugin-yubikey --generate --name 'YRO Yubi Neo - age'

Enter PIN for YubiKey with serial 4XXXXX8 (default is 123456): [hidden]
👆 Please touch the YubiKey
[TRACE yubikey::apdu] <<< Response { status_words: IncorrectSlotError, data: [] }
[ERROR yubikey::piv] failed to generate new key (incorrect slot)
Error: Error while communicating with YubiKey: key error

I finally found out here, that the YK Neo is not supported.
But it still has PIV support, so I was wondering why?
If it's just that it needed some customization and you didn't have one handy, I might be able to help.

[str4d]

YubiKey NEO is not supported because it is unsupported by the upstream yubikey crate. See iqlusioninc/yubikey.rs#18 and iqlusioninc/yubikey.rs#63 for details. If yubikey regained support for NEO then age-plugin-yubikey likely would as well, but it's an upstream concern.