New comment by sgn on void-packages repository

https://github.com/void-linux/void-packages/issues/27437#issuecomment-752791247

Comment:
I think we can replace this hack by another hack, e.g. symlink `$DESTDIR//usr/$XBPS_CROSS_TRIPLET/usr` to `/usr` in `pre_install` and remove it in `post_install`.