verifying unpacked signed add-ons

Andrew McKay amckay at
Fri Nov 3 23:01:58 UTC 2017

> WebExtensions are never meant to be installed unpacked except during
> development. It's currently possible for some side-load methods to install
> them unpacked in production, but that's not supported. System add-ons are
> never installed unpacked in production builds.

We don't have any telemetry on the packed state of an extension, so we
don't know how widespread the use of unpacked extensions is. We might
want to collect first if there's a plan to disable that.

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