New comment by atk on void-packages repository

https://github.com/void-linux/void-packages/issues/32406#issuecomment-1251532180

Comment:
We can also easily use an INSTALL script:

```sh
#
# This script loads the data files
#

case "${ACTION}" in
post)
  for i in 0 1 2; do
    if [ ! -e "/usr/lib/etlegacy/etmain/pak${i}.pk3" ]; then
      curl "https://mirror.etlegacy.com/etmain/pak${i}.pk3" \
        -o "/usr/lib/etlegacy/etmain/pak${i}.pk3"
    fi
  done
	;;
esac
```

and a similar remove file can remove the data files again. This should solve the issue with distributing the data files.

I actually just tried this, but got stuck at https://github.com/etlegacy/etlegacy/issues/1978 like you did.