I set mozconfig-extra-android as follows, but tbpl still tried to build android: https://hg.mozilla.org/projects/alder/rev/a8ee924ba6d4 # Turn off android builds until supported by webrtc.org exit 1 example (from the push of this change): https://tbpl.mozilla.org/php/getParsedLog.php?id=10179262&tree=Alder&full=1 I'll note that android isn't mentioned on https://wiki.mozilla.org/ReleaseEngineering/DisposableProjectBranches

Sorry, the documentation was out of date but has been updated now. Let me know if it needs any further work.

Does this mean that mozconfig-extras isn't used? That might explain another big problem I'm having!

I should suggest that making people edit things that get pushed back to m-c if you're not careful is a recipe for mistakes... but I suppose it doesn't happen too often, so maybe that doesn't matter.

They're not used any more. If you want a custom mozconfig on try or a disposable branch then modify the in-tree mozconfig. To disable jobs on try use trychooser, and on a Disposable branch file a bug in this component.

(In reply to Randell Jesup [:jesup] from comment #3) One of the motivations of bug 558180 was to make merges from central to aurora (etc etc) simpler, since any changes from the last development come across automatically. There's a similar argument about feature branches landing too, although that's often done in configure or confvar.sh instead. I certainly agree there's a risk of accidental changes getting merged back, but I'd hope that developers are paying close attention when they merge. If you have any ideas for preventing accidents then sing out.