I like Slack but it does NOT have the full history in the free plan - it's limited to 10k messages.
I think a special GitLab issue (something akin #360 CI Tracker) would do the job quite nicely. Vaclav > On 19 Jun 2020, at 06:48, Jed Brown <j...@jedbrown.org> wrote: > > I would prefer this mailing list or GitLab issues because they are > > 1. genuinely open to external participants, > 2. more async-friendly for those in different timezones and folks with young > kids, and > 3. searchable and externally linkable (e.g., from merge requests and issues) > > If we need synchronous breakouts, we could do so, but there should be a > summary back for those who couldn't participate synchronously. > > Barry Smith <bsm...@petsc.dev> writes: > >> I'd like to start a discussion of PETSc 4.0 aka the Grand Refactorization >> but to have that discussion we need to discuss what tool to use for that >> discussion. >> >> So this discussion is not about PETSc 4.0, please don't discuss it here. >> >> What do people recommend to use for the discussion >> >> * dedicated mailing list >> * slack channel(s) >> * zulip channel(s) >> * something else? >> >> I'd like a single tool that anyone can join at any time, see the full >> history, can attach files, search, not cost more money the we are already >> paying, etc. >> >> I expect this discussion to take maybe a week and then the actual >> discussion to take on the order of two months. >> >> Thanks >> >> Barry >> >>