There's a closed pull request on the void-packages repository

[WIP] wireguard-dkms: Attempt to prevent install on linux>=5.6
https://github.com/void-linux/void-packages/pull/23937

Description:
In [a recent issue I opened](https://github.com/void-linux/void-packages/issues/23790), I brought up that it was confusing whether or not wireguard-dkms was needed. The package's description now states that it's only for kernel versions 5.5 and lower, but I'd like to outright prevent someone from trying to install it on a kernel where it's not necessary. This is my attempt to do that.