The one exception to this schedule is that unscheduled releases may be required for critical security and stability issues. It might seem expedient to land new features from mozilla-central as soon as they are "ready", but such a pattern would introduce too many variables into stability measurements. For example, in the diagram above, new code from mozilla-central arrives in week 6, 12, and 18. New code migrates from one repository to another on a fixed schedule. The release channel receives updates from the beta channel periodically. The mozilla-central, mozilla-aurora, and mozilla-beta channels receive frequent updates so changes to the program can be validated before appearing in the general release. Essentially, it needs to be easy to get the code on mozilla-central into a shippable state by disabling new code. Since mozilla-central will be pulled into the mozilla-aurora channel at week 6 and week 12, such features will need to have a mechanism allowing them to be easily disabled. Some features might need three cycles (18 weeks) on mozilla-central before they're ready. Simultaneously, work continues on the mozilla-central repository. In the diagram above, the blue bars represent one set of changes progressing through each channel. The number of users on each channel grows by roughly 10x as the changes make their way through the release process, and features on each channel require an accompanying improvement in stability. It's just that they'll be present only on mozilla-central until they're ready. This policy does allow for features that take a long time to develop. Features that end up disabled or miss the scheduled transition to the experimental channel can be pulled again the next time the schedule permits. New features are rarely directly added to the mozilla-aurora or mozilla-beta channels. The beta channel receives only new features that are slated for the next Firefox release.Įach release channel is backed by a Mercurial repository containing a distinct copy of the Firefox source code.As a set of changes progresses through the repositories, features that aren't quite ready are disabled. The mozilla-aurora channel gets new features at regular intervals, but some of them might be disabled if it looks like they need more work. The UI might change each day, and websites might not work at times. The nightly channel gets new features as soon as they are ready, but it has the lowest stability of the four channels. The four channels available are: mozilla-central (or "nightly"), mozilla-aurora, mozilla-beta, and Firefox (release). Larger features and projects are usually initially developed in other repositories which track mozilla-central. To get your patch into the mozilla-central repository, see How to Submit a Patch. Eventually, the changes appear in the general Firefox release. At scheduled intervals, the changes are imported from mozilla-central to release channels with wider audiences, such as the beta channel. Powers of TenĪll changes to Firefox source code are initially integrated in the mozilla-central Mercurial repository. The goal of the process is to provide regular improvements to users without disrupting longer term work. That means each release happens regardless of whether a given feature is ready, and releases are not delayed to wait for a feature to stabilize. Firefox has hundreds of millions of users, so some care is in order.įirefox uses a schedule-driven process, where releases take place at regular intervals. LatestDevVersion=`curl -s '' | /usr/bin/python -c "import sys, json print json.load(sys.This document describes the process by which changes to Firefox source code become a general Firefox release. Logfile="/Library/Logs/FirefoxDevInstallScript.log" #Based on Joe Farage and Deej's work to automatically update Firefox and Firefox ESR #Script to automatically read the latest version of Firefox Developer, check the version on the machine and install the latest if required A developer then showed me where to get the full version.Īnyway I thought I'd post this and share with the community :) #!/bin/bash I had some problems getting the full version of FF Developer (It wasn't in ist) and ended up having to log a bug with Mozilla. We had a requirement to do the same for Firefox Developer Edition. Theres some nice scripts I've found here that automatically update/install Firefox and Firefox ESR.
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