Hi leaeasy, wechat-uos-bwrap is now renamed wechat-uos-qt to reflect the main toolkit. It does include SystemCallFilters and other sandbox features. However, these can be disabled within 2 clicks: Right Click then choose Disable sandbox, or write a specific environment variable to make permanent changes. I understand the fact that this thread is now wayyy too long for someone to read, but if you did, you'll find out we already discussed the non Arch detection logic above. Furthermore, these sandbox functions are not in PKGBUILD, they live in the launch script. Packaging is not easy, and I know 7Ji has made many improvements to the early wechat-uos-bwrap package and its scripts. However, this will not change the fact that wechat-beta-bwrap and wechat-universal-bwrap are 2 duplicated package of wechat-uos-qt, which is both fully functional and safer due to the restriction applied. -- Sincerely, Kimiblock