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Either fully remove Rust from Firefox or backport engine changes from Quantum onto UXP

Posted: 18 Apr 2026, 11:25
by wuggy
Title is self explanatory. Ideally I'd want ESR 68 or 78 if that is possible. I know Rust is more baked in, in later releases like 91.

Either fully remove Rust from Firefox or backport engine changes from Quantum onto UXP

Posted: 19 Apr 2026, 14:49
by Iffy-chan
The SeaMonkey guys seems to be doing exactly that (backporting engine changes), albeit with Gecko instead of Goanna, and by freezing the version of Rust in order to allow for Windows 7 compatibility. They weren't able to remove all dependencies due to lack of manpower, but I suspect they may have done some work, knowing how at least some of their team tend to operate*.

I'd hop into their IRC Chat if I were you. I honestly wish they'd get more attention for what they're doing, especially around these parts - and particularly with how they were shafted by Mozilla themselves and effectively kicked off their infrastructure around the FF Quantum transition period. That shit was painful.

* One of them literally made this... thing, by the way.

Either fully remove Rust from Firefox or backport engine changes from Quantum onto UXP

Posted: 13 May 2026, 10:22
by wuggy
It seems like the folks over at Pale Moon already removed Rust from Firefox 52 and 55 (in the form of UXP and Móbius). It should be easy to do it in FF60 or 68

Either fully remove Rust from Firefox or backport engine changes from Quantum onto UXP

Posted: 13 May 2026, 22:30
by K4sum1
60 already has Servo code, so I'd expect that to be somewhat hard.

Either fully remove Rust from Firefox or backport engine changes from Quantum onto UXP

Posted: 08 Jul 2026, 00:21
by K4sum1
I completely forgot about this thread, but I've been working on this. However I don't think I will be able to go much past 60 since they switched exclusively to Stylo for 61+. Although it gives a good opportunity to make a UXP and Mypal68 competitor.

Currently just doing work here.
https://github.com/Eclipse-Community/r3dfox-old/tree/esr60new

However once I get it to a decent state, I'll move it here and have issues and debug builds and proper stuff for testing and all.
https://github.com/Eclipse-Community/eXPlorer

Either fully remove Rust from Firefox or backport engine changes from Quantum onto UXP

Posted: 07 Sep 2026, 00:00
by UCyborg

Either fully remove Rust from Firefox or backport engine changes from Quantum onto UXP

Posted: 07 Sep 2026, 00:54
by The-10-Pen

Either fully remove Rust from Firefox or backport engine changes from Quantum onto UXP

Posted: 08 Sep 2026, 00:23
by K4sum1
UCyborg wrote: 07 Sep 2026, 00:00 You folks actually like C++?
Rust is worse.

Either fully remove Rust from Firefox or backport engine changes from Quantum onto UXP

Posted: 10 Sep 2026, 20:05
by UCyborg
Meh, maybe if developers focused on user experience for once, we'd have something decent.

Either fully remove Rust from Firefox or backport engine changes from Quantum onto UXP

Posted: 10 Sep 2026, 20:57
by The-10-Pen
UCyborg wrote: 10 Sep 2026, 20:05 Meh, maybe if developers focused on user experience for once, we'd have something decent.
Um, I kind of doubt it.
For one, just WHAT does "user experience" really mean?

ie, I'm very much anti-telemetry and Privacy Rights.

BUT... If that is what the "user" really wanted, then things like Facebook, Instagram, and TikTok would have **NEVER** succeeded because THIS "user" has never been on ANY OF THEM.

Either fully remove Rust from Firefox or backport engine changes from Quantum onto UXP

Posted: 13 Sep 2026, 14:03
by UCyborg
Depends, but I'd start with stop making changes for the sake of change.