# Firefox Release Data¶

hg.mozilla.org has facilities for aggregating and exposing information about Firefox releases performed from Mercurial changesets.

Important

This feature is currently experimental and implementation details may change. If you would like the feature to stabilize, please ping gps in #vcs on irc.mozilla.org.

This feature is currently only enabled on the mozilla-central repository.

## Features¶

### Release Info on Changeset Pages¶

Changeset pages like https://hg.mozilla.org/mozilla-central/rev/1362c0928dc1 display information on Firefox releases in relation to that changeset.

Most pages should have a first release with and last release without section. Exceptions include changesets in the very early and very modern repository history. (This info isn’t displayed unless we can find a release in both directions.)

If a release was made from that changeset, there will also be information on those releases. e.g. https://hg.mozilla.org/mozilla-central/rev/09a4282d1172. This includes a link to the pushlog containing changesets landed between two releases.

### Listing of Known Releases¶

The firefoxreleases web command renders known Firefox releases from changesets in a repo. e.g. https://hg.mozilla.org/mozilla-central/firefoxreleases.

A JSON view is available by using the json-firefoxreleases web command. e.g. https://hg.mozilla.org/mozilla-central/json-firefoxreleases.

Filtering by platform is available by specifying the platform query string argument. e.g. https://hg.mozilla.org/mozilla-central/firefoxreleases?platform=win32.

Note

If you want to read this data from machines, a better source might be https://mozilla-services.github.io/buildhub/.

## Development Info¶

Please file bugs and feature requests against the hg.mozilla.org Bugzilla component.

For real time support, make noise in #vcs on irc.mozilla.org.