Managing requirements for a many-thousands contributors software

Transcript

1. Managing requirements for a >1k contributors software

2. None

3. dafuq?, smiling cat?

4. For attending Still here feel free to interrupt @flaper87 flavio@redhat.com

5. None

6. The problem Co-Installable software What do we depend on? Requirements

   Synced

7. What do we depend on? License requirements Binary vs Pure

   Python Py27 / Py34 support

8. What do we depend on? License requirements Binary vs Pure

   Python Py27 / Py34 support

9. What do we depend on? License requirements Binary vs Pure

   Python Py27 / Py34 support

10. What do we depend on? License requirements Binary vs Pure

    Python Py27 / Py34 support

11. requirements >= synced Project 1 Project 2 Project 3 Project

    N

12. Co-Installable software Compute Requirements Storage Requirements Network Requirements

13. Co-Installable software Compute Requirements Storage Requirements Network Requirements openstack libraries

    Third-Party libraries transitive dependencies

14. Co-Installable software Essential for integration tests

15. OpenStack [...] to produce the ubiquitous Open Source Cloud Computing

    platform that will meet the needs of public and private clouds regardless of size, by being simple to implement and massively scalable. [...]

16. Compute & storage We’ve been adding new projects to the

    ecosystem ever since OpenStack was created

17. Compute & storage auth We’ve been adding new projects to

    the ecosystem ever since OpenStack was created

18. Compute & storage db auth We’ve been adding new projects

    to the ecosystem ever since OpenStack was created

19. Compute & storage Network db auth We’ve been adding new

    projects to the ecosystem ever since OpenStack was created

20. Compute & storage Network Messages db auth We’ve been adding

    new projects to the ecosystem ever since OpenStack was created

21. Compute & storage Network Messages db auth Images We’ve been

    adding new projects to the ecosystem ever since OpenStack was created

22. Compute & storage Images DB net auth All these projects

    ought to be able to run under the same environment

23. Centralized requirements

24. For every requirement file Main Tests Extra

25. For every requirement file Direct & Transitive

26. For every requirement file Internal & Third-Party

27. Not editable mode (-e)

28. Not external source (-f)

29. CI Job forbidding untracked requirements

30. minimum Working version

31. No Dependency Caps

32. Requirements Constraints

33. 1 2 3 4 Does it have an acceptable license?

    Is it Py3 compatible? Is it actively maintained? Is it packaged already? 5 Does something similar exists already? Ask yourself these questions

34. ... Or you can just ignore this ...

35. 1 2 3 4 Use the minimum version possible Avoid

    dependencies that don’t do semver Capping is not always good Favor things on PyPi 5 Keep track of transitive dependencies Summary-ish

36. Questions?