New comment by amak79 on void-packages repository

https://github.com/void-linux/void-packages/issues/32406#issuecomment-894894050

Comment:
> There is one challenge on acquire the original pak0.pk3 to make the game run,
> from https://mirror.etlegacy.com/etmain, we are probably not allow to distribute this file and
> must be manually downloaded by user post install, correct me if Im wrong.

The ET: Legacy Flatpak fetches the original et260b.x86_full.zip file, then [extracts](https://github.com/flathub/com.etlegacy.ETLegacy/blob/186b6ad9e578cdf279d3e903f001f3940e0526db/com.etlegacy.ETLegacy.yaml#L152) and installs all 3 .pk3 files.