They're kind of right when they say "definitely"; the Zulip desktop client is written in C++, uses Qt for graphics, and uses CMake to build. I don't think any of those are available on Plan 9 (well, C++ is, but the compilers are kind of old...).
On September 26, 2015 9:59:44 AM CDT, Skip Tavakkolian <skip.tavakkolian@gmail.com> wrote: