https://wiki.archlinux.org/index.php/Testing#.5Btesting.5D states the following (paraphrased for summary):- [testing] is for experienced users who can deal with broken systems, not for the 'absolute latest' package versions. It may break critical/[core] packages, as such users are strongly encouraged to subscribe to [arch-dev-public] and watch the [testing] sub-forum. Second reference - this forum thread - https://bbs.archlinux.org/viewtopic.php?id=128682 A user basically is using [testing] without fulfilling the above requirements. Should the user be advised not to use [testing] or is this counter-productive to the purpose of [testing]? This discussion is not meant to be commentary on any of the personalities involved in the thread, the thread did spark this but I'd like to hear (esp from devs/TUs) opinions on the general case, not the specific case. The reason for this is that its possible there's quite a bit of difference in opinions, and some clarity would (IMO) help. My personal opinion - If you don't fulfil the above requirement you should not use [testing], and other Arch users should graciously inform you as such. Sorry for the long email, feel free to mute this thread, since I do know its got high potential for unproductive cross-chatter.