What is the situation of Thunderbird? I think they don't have e10s enabled
yet, and it may be worth at least knowing what their plans are.

 -- Emilio

On Wed, Jun 10, 2020, 8:44 PM Dave Townsend <dtowns...@mozilla.com> wrote:

> Non-e10s is such a different environment that I don't think we have any
> hope of keeping it working without running the full test suite in that mode
> and I don't think anyone wants to do that. Now that this has started
> breaking I think it is actively harmful to our users for us to allow them
> to disable e10s.
>
> On Wed, Jun 10, 2020 at 11:30 AM Gijs Kruitbosch <gijskruitbo...@gmail.com
> >
> wrote:
>
> > (Copied to fx-dev; Replies to dev-platform please.)
> >
> > Hello,
> >
> > Just over a year ago, I started a discussion[0] about our support for
> > disabling e10s. The outcome of that was that we removed support for
> > disabling e10s with a pref on Desktop Firefox with version 68, except
> > for use from automation. We kept support for using the environment
> > variable. [1]
> >
> > Last week, we released Firefox 77, which turned out to break all
> > webpages sent using compression (like gzip) if you had disabled e10s
> > using this environment variable. [2]
> >
> > So here we are again. I'd like to propose we also stop honouring the
> > environment variable unless we're running tests in automation. We
> > clearly do not have sufficient test coverage to guarantee basic things
> > like "the browser works", it lacks security sandboxing, and a number of
> > other projects require it (fission, gpu process, socket process, ...),
> > so I think it's time to stop supporting this configuration at all.
> >
> > I hope to make this change for the 79 cycle. I'm open to arguments
> > either way about what to do for 78 esr (assuming the patch for 79 turns
> > out to be simple; the work to remove the pref had a number of annoying
> > corner-cases at the time).
> >
> > Please speak up if you think that this plan needs adjusting.
> >
> > ~ Gijs
> >
> >
> > [0]
> >
> >
> https://groups.google.com/d/msg/mozilla.dev.platform/cJMzxi7_PmI/Pi1IOg_wCQAJ
> > [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1548941
> > [2] https://bugzilla.mozilla.org/show_bug.cgi?id=1638652
> > _______________________________________________
> > firefox-dev mailing list
> > firefox-...@mozilla.org
> > https://mail.mozilla.org/listinfo/firefox-dev
> >
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