Gecko ESR140 for Sailfish OS — alpha 1

An experimental community port of Mozilla Gecko ESR140 (Firefox 140) to
Sailfish OS 5.1, replacing the ESR91-based engine currently shipping with
the OS. All packages are suffixed -next and install alongside the stock
browser without touching it.

Tested on Sony Xperia 10 V (pdx235), SFOS 5.1.0.11, aarch64.

What works

• Page rendering (WebRender, hardware accelerated)
• Touch: tap, scroll, flick, pinch zoom, double-tap zoom
• Downloads with native Sailfish transfer UI
• Camera and microphone access (WebRTC / getUserMedia) with permission dialog
• Google OAuth sign-in, including popups that close themselves
• Landscape orientation
• Text selection (drag slightly while long-pressing)

Known issues

• Occasional crash on first start; restarting usually succeeds
• Long-press requires slight movement to trigger selection
• Rear camera delivers frames but shows a still viewfinder (device HAL issue)
• Some CSS assets fail to load on a few sites (CORS / HTTP-3, under investigation)

Installation

Download all seven RPMs and install them together:

devel-su rpm -Uvh --force *.rpm

xulrunner-qt5-next is ~60 MB; the whole set needs roughly 200 MB of space.

Sources

• Engine and EmbedLite layer: https://github.com/smatkovi/gecko-dev (branch fork-esr140)
• JS components: https://github.com/smatkovi/embedlite-components (branch fork-esr115)

Feedback welcome — please include device model and SFOS version.