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Ubuntu Development Processes

Mackenzie Morgan
Mackenzie Morgan

The document discusses Ubuntu development processes. It covers developer groups, the release cycle consisting of alphas, betas, and releases, how changes are made through branches and sponsorship, and how bugs are handled through patches, tags, and the reviews team. It also outlines transitions to version control branching and challenges integrating many developers.

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Ubuntu Development Processes Mackenzie Morgan Developer Groups Ubuntu Development Processes The Release Cycle Making Changes Mackenzie Morgan Bugs CALUG 12 May 2010
Outline Ubuntu Development Processes Mackenzie Morgan 1 Developer Groups Developer Groups The Release Cycle 2 The Release Cycle Making Changes Bugs 3 Making Changes 4 Bugs
Who are the developers? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Making Changes Bugs But thats outdated
What changed? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Archive reorganisation (hereafter: archive reorg) Making Changes Bugs
Whats archive reorg? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle A switch away from components to a uni鍖ed archive with Making Changes 鍖ner-grained RBAC for uploading Bugs
Pre-Archive Reorganisation Ubuntu Development Processes Mackenzie Morgan 4 components: Developer Groups Main The Release Cycle Restricted Making Universe Changes Bugs Multiverse Core-devs upload to all of the above. Masters of the Universe (MOTU) upload to Universe & Multiverse
Post-Archive Reorganisation Ubuntu Development Processes Packagesets: Mackenzie Morgan Ubuntu Desktop Developer Ubuntu Server Groups The Release Kubuntu Cycle Xubuntu Making Changes Mythbuntu Bugs Ubuntu Studio Ubuntu Education Edition Ubuntu Mobile Kernel Correspond to packages on install discs
And those access controls. . . ? Ubuntu Development Processes Mackenzie Morgan Developer Groups Each packageset has a set of developers The Release Core devs still upload anything Cycle Making MOTU upload anything not in a package set Changes New: Generalist devs upload anything not in a restricted Bugs packageset New: Per-package uploaders
Where are we now? Ubuntu Development Processes Mackenzie Morgan Done: Developer Groups Ubuntu Desktop The Release Cycle Ubuntu Server Making Changes Kubuntu Bugs Mythbuntu Kernel Per-package uploaders
How many developers are there? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle 147 in ubuntu-dev Making Changes Unknown number of prospective developers Bugs
How do I 鍖nd a packages maintainer? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle You dont. Were not Debian. Making Changes Bugs
What if you lack upload rights? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Other developers can sign o鍖 on and upload your package Making Changes (sponsoring) Bugs
How do you get upload rights? Ubuntu Development Processes Mackenzie Morgan Developer Groups 1 Do good work & get it sponsored The Release Cycle 2 Create a wiki page to apply Making Changes 3 Get sponsors to vouch for you on your wiki page Bugs 4 Go to a Developer Membership Board (or one of the delegated boards) meeting and get voted in
Outline Ubuntu Development Processes Mackenzie Morgan 1 Developer Groups Developer Groups The Release Cycle 2 The Release Cycle Making Changes Bugs 3 Making Changes 4 Bugs
First things 鍖rst Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Binary-copy packages from previous release Cycle Making Automatically sync from Debian Sid Changes Bugs Merge remaining packages
Stages Ubuntu Development Processes Mackenzie Morgan Developer Ubuntu Developer Summit Groups 4 Alphas The Release Cycle 1 Beta Making Changes 2 Release Candidates Bugs Ship it! Also, lots of freezes (Toolchain, Debian Import, String, UI, Feature. . . )
What happens during freezes? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Uploads are queued pending Archive Admin approval Making Changes http://launchpad.net/ubuntu/maverick/+queue Bugs
Stable Release Upgrades (SRU) Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Bug鍖xes only (preferably minimal patch) Cycle Making Must document regression potential Changes Bugs Package is uploaded to -proposed for 2 weeks
Outline Ubuntu Development Processes Mackenzie Morgan 1 Developer Groups Developer Groups The Release Cycle 2 The Release Cycle Making Changes Bugs 3 Making Changes 4 Bugs
Packages are kept in VCS, like every other distro, right? Ubuntu Development Processes Mackenzie Morgan Developer Groups Er. . . yes and no. . . The Release Cycle Yes, all but 500 packages are in bzr now Making No, it hasnt always been this way Changes Ubuntu Distributed Development (UDD) is the attempt at Bugs change
Why? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle We followed Debian on the debuild -S && dput Making Changes ../*.changes thing Bugs
Why change? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Debian has only a few maintainers per package Making Changes We have team maintainership, >70 developers responsible Bugs
Hows the change going? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Slowly. Making Changes Bugs
Why slowly? Ubuntu Development Processes Mackenzie Morgan Developer We have (thanks mostly to James Westby): Groups The Release tools (mostly) Cycle Making docs (mostly) Changes branches (mostly) Bugs Have you ever tried to convince 150 people to stop doing what seems to work and learn something new?
Old work鍖ow Ubuntu Development Processes Mackenzie Morgan Developer apt-get source foo Groups The Release cd foo Cycle Making Make changes & add changelog entry Changes debuild -S Bugs Use pbuilder to test-build ../*.dsc dput foo*.changes
New work鍖ow Ubuntu Development Processes (See if I get this right) Mackenzie Morgan bzr branch lp:ubuntu/foo or bzr branch Developer lp:ubuntu/hardy/foo Groups cd foo The Release Cycle Make changes & add changelog entry Making Changes bzr-buildpackage -S Bugs Use pbuilder to test-build ../*.dsc debcommit Then it diverges. . . If the team merges many changes then releases: bzr push If not: dput ubuntu ../*.changes && bzr mark-uploaded && bzr push
Outline Ubuntu Development Processes Mackenzie Morgan 1 Developer Groups Developer Groups The Release Cycle 2 The Release Cycle Making Changes Bugs 3 Making Changes 4 Bugs
How are patches handled in Ubuntu? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Badly. Making Changes Bugs
Why? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Not enough monkeys Making Daniel T. Chen Changes 2000 patches bitrotting in Launchpad Bugs
Whats being done about it? Ubuntu Development Processes Mackenzie Morgan Developer Groups Ubuntu Reviews team formed to: The Release Cycle review patches Making Changes upstream patches if needed Bugs run Patch Days
How can I submit a patch? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Attach it to the bug report Cycle Making Mark it as a patch on upload Changes Bugs Add the patch tag to the bug
Can I use the bzr branches from before? Ubuntu Development Processes Mackenzie Yes! Morgan If making a new candidate revision: Developer Groups In debian/changelog: LP: #12345 The Release debcommit Cycle Making bzr push lp:me/foo/fixfor12345 Changes Bugs If not: bzr commit --fixes 12345 bzr push lp:me/foo/fixfor12345 Branch is automatically linked to bug report bzr lp-open to submit merge proposal
Can I submit a debdi鍖 like in Debian? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Yes! Making Subscribe ubuntu-sponsors to the bug report (and still include Changes LP: #12345 in debian/changelog) Bugs
Whats that LP: #12345 stu鍖? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Bug #12345 will be automatically marked Fix Released when Making Changes the package is uploaded Bugs
Why so many bugs in stable? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Testing happens too late (Beta) Cycle Making Rushing to 鍖x bugs late introduces more bugs Changes Bugs Need more developers
Questions? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Making Changes Bugs

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Ubuntu Development Processes

  • 1. Ubuntu Development Processes Mackenzie Morgan Developer Groups Ubuntu Development Processes The Release Cycle Making Changes Mackenzie Morgan Bugs CALUG 12 May 2010
  • 2. Outline Ubuntu Development Processes Mackenzie Morgan 1 Developer Groups Developer Groups The Release Cycle 2 The Release Cycle Making Changes Bugs 3 Making Changes 4 Bugs
  • 3. Who are the developers? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Making Changes Bugs But thats outdated
  • 4. What changed? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Archive reorganisation (hereafter: archive reorg) Making Changes Bugs
  • 5. Whats archive reorg? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle A switch away from components to a uni鍖ed archive with Making Changes 鍖ner-grained RBAC for uploading Bugs
  • 6. Pre-Archive Reorganisation Ubuntu Development Processes Mackenzie Morgan 4 components: Developer Groups Main The Release Cycle Restricted Making Universe Changes Bugs Multiverse Core-devs upload to all of the above. Masters of the Universe (MOTU) upload to Universe & Multiverse
  • 7. Post-Archive Reorganisation Ubuntu Development Processes Packagesets: Mackenzie Morgan Ubuntu Desktop Developer Ubuntu Server Groups The Release Kubuntu Cycle Xubuntu Making Changes Mythbuntu Bugs Ubuntu Studio Ubuntu Education Edition Ubuntu Mobile Kernel Correspond to packages on install discs
  • 8. And those access controls. . . ? Ubuntu Development Processes Mackenzie Morgan Developer Groups Each packageset has a set of developers The Release Core devs still upload anything Cycle Making MOTU upload anything not in a package set Changes New: Generalist devs upload anything not in a restricted Bugs packageset New: Per-package uploaders
  • 9. Where are we now? Ubuntu Development Processes Mackenzie Morgan Done: Developer Groups Ubuntu Desktop The Release Cycle Ubuntu Server Making Changes Kubuntu Bugs Mythbuntu Kernel Per-package uploaders
  • 10. How many developers are there? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle 147 in ubuntu-dev Making Changes Unknown number of prospective developers Bugs
  • 11. How do I 鍖nd a packages maintainer? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle You dont. Were not Debian. Making Changes Bugs
  • 12. What if you lack upload rights? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Other developers can sign o鍖 on and upload your package Making Changes (sponsoring) Bugs
  • 13. How do you get upload rights? Ubuntu Development Processes Mackenzie Morgan Developer Groups 1 Do good work & get it sponsored The Release Cycle 2 Create a wiki page to apply Making Changes 3 Get sponsors to vouch for you on your wiki page Bugs 4 Go to a Developer Membership Board (or one of the delegated boards) meeting and get voted in
  • 14. Outline Ubuntu Development Processes Mackenzie Morgan 1 Developer Groups Developer Groups The Release Cycle 2 The Release Cycle Making Changes Bugs 3 Making Changes 4 Bugs
  • 15. First things 鍖rst Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Binary-copy packages from previous release Cycle Making Automatically sync from Debian Sid Changes Bugs Merge remaining packages
  • 16. Stages Ubuntu Development Processes Mackenzie Morgan Developer Ubuntu Developer Summit Groups 4 Alphas The Release Cycle 1 Beta Making Changes 2 Release Candidates Bugs Ship it! Also, lots of freezes (Toolchain, Debian Import, String, UI, Feature. . . )
  • 17. What happens during freezes? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Uploads are queued pending Archive Admin approval Making Changes http://launchpad.net/ubuntu/maverick/+queue Bugs
  • 18. Stable Release Upgrades (SRU) Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Bug鍖xes only (preferably minimal patch) Cycle Making Must document regression potential Changes Bugs Package is uploaded to -proposed for 2 weeks
  • 19. Outline Ubuntu Development Processes Mackenzie Morgan 1 Developer Groups Developer Groups The Release Cycle 2 The Release Cycle Making Changes Bugs 3 Making Changes 4 Bugs
  • 20. Packages are kept in VCS, like every other distro, right? Ubuntu Development Processes Mackenzie Morgan Developer Groups Er. . . yes and no. . . The Release Cycle Yes, all but 500 packages are in bzr now Making No, it hasnt always been this way Changes Ubuntu Distributed Development (UDD) is the attempt at Bugs change
  • 21. Why? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle We followed Debian on the debuild -S && dput Making Changes ../*.changes thing Bugs
  • 22. Why change? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Debian has only a few maintainers per package Making Changes We have team maintainership, >70 developers responsible Bugs
  • 23. Hows the change going? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Slowly. Making Changes Bugs
  • 24. Why slowly? Ubuntu Development Processes Mackenzie Morgan Developer We have (thanks mostly to James Westby): Groups The Release tools (mostly) Cycle Making docs (mostly) Changes branches (mostly) Bugs Have you ever tried to convince 150 people to stop doing what seems to work and learn something new?
  • 25. Old work鍖ow Ubuntu Development Processes Mackenzie Morgan Developer apt-get source foo Groups The Release cd foo Cycle Making Make changes & add changelog entry Changes debuild -S Bugs Use pbuilder to test-build ../*.dsc dput foo*.changes
  • 26. New work鍖ow Ubuntu Development Processes (See if I get this right) Mackenzie Morgan bzr branch lp:ubuntu/foo or bzr branch Developer lp:ubuntu/hardy/foo Groups cd foo The Release Cycle Make changes & add changelog entry Making Changes bzr-buildpackage -S Bugs Use pbuilder to test-build ../*.dsc debcommit Then it diverges. . . If the team merges many changes then releases: bzr push If not: dput ubuntu ../*.changes && bzr mark-uploaded && bzr push
  • 27. Outline Ubuntu Development Processes Mackenzie Morgan 1 Developer Groups Developer Groups The Release Cycle 2 The Release Cycle Making Changes Bugs 3 Making Changes 4 Bugs
  • 28. How are patches handled in Ubuntu? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Badly. Making Changes Bugs
  • 29. Why? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Not enough monkeys Making Daniel T. Chen Changes 2000 patches bitrotting in Launchpad Bugs
  • 30. Whats being done about it? Ubuntu Development Processes Mackenzie Morgan Developer Groups Ubuntu Reviews team formed to: The Release Cycle review patches Making Changes upstream patches if needed Bugs run Patch Days
  • 31. How can I submit a patch? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Attach it to the bug report Cycle Making Mark it as a patch on upload Changes Bugs Add the patch tag to the bug
  • 32. Can I use the bzr branches from before? Ubuntu Development Processes Mackenzie Yes! Morgan If making a new candidate revision: Developer Groups In debian/changelog: LP: #12345 The Release debcommit Cycle Making bzr push lp:me/foo/fixfor12345 Changes Bugs If not: bzr commit --fixes 12345 bzr push lp:me/foo/fixfor12345 Branch is automatically linked to bug report bzr lp-open to submit merge proposal
  • 33. Can I submit a debdi鍖 like in Debian? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Yes! Making Subscribe ubuntu-sponsors to the bug report (and still include Changes LP: #12345 in debian/changelog) Bugs
  • 34. Whats that LP: #12345 stu鍖? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Bug #12345 will be automatically marked Fix Released when Making Changes the package is uploaded Bugs
  • 35. Why so many bugs in stable? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Testing happens too late (Beta) Cycle Making Rushing to 鍖x bugs late introduces more bugs Changes Bugs Need more developers
  • 36. Questions? Ubuntu Development Processes Mackenzie Morgan Developer Groups The Release Cycle Making Changes Bugs