We're starting to enable the *building* (not enabling) of Stylo in various platforms in automation. This means that Nightly will start shipping Stylo bits soon - possibly the next Nightly if things stick.
The roll-out is being done as platforms are ready. Linux 64-bit and Windows 64-bit are the primary targets, with other platforms to follow. https://bugzilla.mozilla.org/show_bug.cgi?id=stylo-nightly-build tracks. There are still some toolchain ergonomics issues that we want to address before building Stylo is enabled by default in local builds. These are actively being worked on and local builds should re-converge with automation soon. If you want to tweak your local build, here are the relevant mozconfig snippets: # build Stylo but don't enable it (what automation is now doing) ac_add_options --enable-stylo=build # build and enable Stylo ac_add_options --enable-stylo But unless you interact with Stylo, my guess is you'll want to stick with the defaults because enabling the building of a feature that isn't enabled by default may only increase your build times while providing little to no benefits. As part of this, building Stylo in Firefox is now being promoted from Tier 2 to 1. This involves some wonky version control machinery that knows how to "synchronize" backouts on autoland to the canonical Stylo repo on GitHub, all while ensuring file content and diffs line up between the 2 repos. This machinery may be a bit fragile initially. So there's a chance we'll have to back out building Stylo if there are problems. Hopefully we'll fall forward and fix bugs as they arise without too much disruption though. _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform