Ubuntu App Development ISO

1) no install options necessary, live system is enough
2) install ubuntu-sdk instead of a range of other packages like
   libreoffice (seed branch available at lp:~ubuntu-core-dev/ubuntu-seeds/ubuntu-appdev.utopic)
3) allow ubuntu user to log in (code available at: lp:~dholbach/livecd-rootfs/ubuntu-appdev - r988)
4) set up emulator and click chroot (code available at lp:~dholbach/livecd-rootfs/ubuntu-appdev - r989)
5) make use of SDK PPA - call EXTRA_PPAS with ppa:ubuntu-sdk-team/ppa

Meta package and modified livecd-rootfs available in
https://launchpad.net/~dholbach/+archive/ubuntu/ubuntu-appdev/+packages

Comments from Colin:

Create the livefs configuration in Launchpad. Start from https://launchpad.net/~BUILD-USER/+new-livefs, where BUILD-USER is the username decided above. Make sure "Owner" is set to BUILD-USER and "Live filesystem build metadata" is set to:

     {"project": "ubuntu-appdev", "extra_ppas": ["dholbach/livecd-rootfs", "ubuntu-sdk-team/ppa"]}

Decide where the builds are being controlled. This could be the master for cdimage.ubuntu.com, but it would really be better to have it be somewhere else for this kind of demo/training image, particularly given that it's using add-on PPAs.

I'm pretty sure you'll need to add some project configuration to livecd-rootfs/live-build/auto/config here, and you'll probably need to make sure to use metapackages rather than tasks since PPAs don't have Task fields.

 Ideally, set up an instance of lp:ubuntu-cdimage on the system you're going to be using to trigger the builds. This shouldn't be too bad given that you're using Launchpad for the livefs builds, but unfortunately I think you will probably need debian-cd and a mirror of main, so it will be a bit of work; hopefully useful work that lets us improve the tools. Start with lp:ubuntu-cdimage and the various subsidiary checkouts listed in configs/devel, then configure it for your new project (you could use r1056/r1059 as an example of roughly what you need to do). You'd need to set up production/livefs-launchpad to read something like:

     ubuntu-appdev daily-live * * BUILD-USER/ubuntu-appdev

"for-project ubuntu-appdev cron.daily-live --live" should kick off a build if you've got everything right. Omit --live to run just the cdimage end of things if you have a recent livefs build on Launchpad that's good and you just want to redo the final image assembly; set DEBUG=1 in the environment to run a build but output everything to your terminal rather than a log file and not publish anything.

Work items:
Make sure ubiquity is not used / pulled in: TODO
Add some project configuration to livecd-rootfs/live-build/auto/config: TODO
Make sure to use metapackages rather than tasks: TODO
Decide where the builds are being controlled: TODO
Decide which LP user is triggering the builds, ideally a bot user of some kind. (That user will need to be a member of ~launchpad-livefs-builders.): TODO
Create the livefs configuration in Launchpad: TODO