Announcing MozillaBuild 3.1.1 Release

Ryan VanderMeulen rvandermeulen at
Tue Nov 28 23:55:44 UTC 2017

Well, that didn't go as planned.

Due to a couple regressions from version 3.1, version 3.1.1 has been
released to clean up the regressions. Apologies for the delay in getting
this out as I know the hg issue in particular has been painful for people
hitting it.

The two primary changes are:

* Fix for hg.exe being unable to load the correct Python DLL on some
systems, causing various commands (such as ./mach bootstrap) to fail that
tried to invoke it.

* The fsmonitor extension was re-disabled due to significant performance
regressions for some common operations caused by watchman excessively
polling the filesystem.

If you're already using version 3.1 without issue, you probably don't need
to pick up this release. You may want to consider disabling fsmonitor in
the mean time, however. You can do that by making the change below to

Download here:

Full Release Notes:

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