MozillaBuild 4.0 <https://ftp.mozilla.org/pub/mozilla/libraries/win32/MozillaBuildSetup-4.0.exe> is the "Snow Leopard" of MozillaBuild releases - *almost* no new features, but significant stability, usability and security improvements! (Perhaps it's bad taste to use a macOS metaphor for Windows-specific software 😉)
Upgrade instructions are here <https://wiki.mozilla.org/MozillaBuild#To_Upgrade_From_A_Previous_Version>, the full changelog is here <https://hg.mozilla.org/mozilla-build/pushloghtml?fromchange=MOZILLABUILD_3_3_4_RELEASE&tochange=MOZILLABUILD_4_0_0_RELEASE>, and you can download MozillaBuild 4.0 from here. *Upgrade notes* - *Developers running Mach outside of MozillaBuild <https://firefox-source-docs.mozilla.org/mach/windows-usage-outside-mozillabuild.html> should still install this update, as the Firefox build uses tools from your local MozillaBuild installation.* - As always, do a `./mach clobber` after changing your MozillaBuild version. - The new version of Mercurial has compatibility issues with `evolve` ("unhashable type: 'set'"), which can be fixed by running `./mach vcs-setup`. <https://bugzilla.mozilla.org/show_bug.cgi?id=1758148> *Highlights* - Ported to MSYS2, significantly updating most tools/libraries. <https://bugzilla.mozilla.org/show_bug.cgi?id=1725895> - Some tools are now a *whole decade* more modern! 🎉 - This includes the `cygpath` <https://cygwin.com/cygwin-ug-net/cygpath.html> utility for converting between Windows and Unix-y paths. See additional instructions on the MozillaBuild wiki <https://wiki.mozilla.org/MozillaBuild#Command_Prompt_Tips_and_Caveats> . - Windows Terminal is supported out-of-the-box. <https://wiki.mozilla.org/MozillaBuild#Windows_Terminal> - Use Windows' OpenSSH by default. <https://bugzilla.mozilla.org/show_bug.cgi?id=1261899> - Mercurial has been updated <http:///> from 5.9.3 to 6.1. <https://www.mercurial-scm.org/wiki/Release6.1> - Python 3 upgraded to 3.9.10, Python 2 removed. <https://bugzilla.mozilla.org/show_bug.cgi?id=1743185> - `hg` now uses interactive "curses" mode by default. <https://phabricator.services.mozilla.com/D134551> [image: hg-histedit.png] [image: hg-split.png] *Fixed* - `python3 -m venv` no longer fails with "WinError 2". <https://bugzilla.mozilla.org/show_bug.cgi?id=1697833> - Running `./mach try fuzzy` no longer makes it impossible to select or copy text. <https://bugzilla.mozilla.org/show_bug.cgi?id=1751526> *Breaking changes* - Mercurial now uses "utf-8" by default. <https://bugzilla.mozilla.org/show_bug.cgi?id=1419922> - Due to the MSYS -> MSYS2 migration, a lot of underlying tools and libraries have changed. <https://bugzilla.mozilla.org/show_bug.cgi?id=1725895> - Automatically-bootstrapped tools have been removed (NSIS <https://phabricator.services.mozilla.com/D130808>, mozmake, yasm <https://phabricator.services.mozilla.com/D134820>). - Python's `virtualenv` package is no longer installed by default. <https://phabricator.services.mozilla.com/D132276> (use `python3 -m venv` instead). - Python 2 is no longer available, and `python` now refers to Python 3. <https://bugzilla.mozilla.org/show_bug.cgi?id=1743185> *Breaking user changes* - `nano` is now the default editor instead of `emacs`. Set "ui.editor" to "emacs" in ~/mercurial.ini or `export EDITOR="emacs.exe"` in your `.bash_profile` to use emacs again. <https://phabricator.services.mozilla.com/D134575> - Note that we've configured `hg`'s `nano` integration to automatically wrap lines at 80 characters to improve commit-message ergonomics. - `hg` merge conflicts are now solved in text form by default. To use kdiff3 again, set `ui.diff` to `"kdiff3"` in ~/mercurial.ini. <https://bugzilla.mozilla.org/show_bug.cgi?id=1748531> 💪😎👉 Happy Windows hacking in a far more ergonomic and modern environment 💪😎👉 -- Mitchell Hentges Engineering Workflow Mozilla -- You received this message because you are subscribed to the Google Groups "[email protected]" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/CAAvot8_ESCnv_g-ftgdhqDzXz0Rzis8GBZiHBqO0-1yuYc0sLw%40mail.gmail.com.
