On the Meaning of Version Numbers

Transcript

1. Hynek Schlawack On the Meaning of Version Numbers @hynek

2. Semantic Versioning @hynek

3. 1.2.3 micro @hynek

4. 1.2.3 minor micro @hynek

5. 1.2.3 major minor micro @hynek

6. SemVer is a poor choice for most projects. @hynek

7. SemVer doesn’t deliver on its promises. @hynek

8. “I can choose to only get bugfixes.” https://xkcd.com/1172/ @hynek Hyrum’s

   Law

9. Very few open source projects have the resources to maintain

   more than one release branch (properly). “I can choose to only get bugfixes.” @hynek

10. If You Pin Major Version In Your Applications @hyne

11. -No security updates. If You Pin Major Version In Your

    Applications @hyne

12. -No security updates. -The longer you wait, the harder it

    gets. If You Pin Major Version In Your Applications @hyne

13. @hynek If You Pin Major Version In Your Public Package

    your-pkg urllib3 1.25.9

14. @hynek If You Pin Major Version In Your Public Package

    your-pkg urllib3 1.25.9 User’s App

15. @hynek If You Pin Major Version In Your Public Package

    your-pkg urllib3 1.25.9 User’s App <2.0

16. @hynek If You Pin Major Version In Your Public Package

    your-pkg urllib3 1.25.9 User’s App <2.0 2.0.0

17. @hynek If You Pin Major Version In Your Public Package

    your-pkg urllib3 1.25.9 User’s App <2.0 other- pkg >2.0 2.0.0

18. @hynek If You Pin Major Version In Your Public Package

    your-pkg urllib3 1.25.9 User’s App <2.0 other- pkg >2.0 Conflict! 2.0.0

19. @hynek

20. 1. Have tests. @hynek

21. 1. Have tests. 2. Pin your dependencies. @hynek

22. 1. Have tests. 2. Pin your dependencies. 3. Try to

    update dependencies. @hynek

23. 1. Have tests. 2. Pin your dependencies. 3. Try to

    update dependencies. 4. See if tests still pass. @hynek

24. 1. Have tests. 2. Pin your dependencies. 3. Try to

    update dependencies. 4. See if tests still pass. 5. GOTO 3 @hynek

25. Almost nobody does SemVer correctly. @hynek

26. https://0ver.org @hynek

27. A concept that most people get wrong is not a

    useful concept for most people. @hynek

28. SemVer is a poor choice for most projects. @hynek

29. Acceptance @hynek

30. @hynek

31. Calendar Versioning @hynek

32. • Toyota 2020 Yaris • pip 20.0.2 • Ubuntu 20.04

    • certifi 2020.4.5.1 @hynek

33. Takeaways @hynek

34. Takeaways •Don’t believe the promises of SemVer. @hynek

35. Takeaways •Don’t believe the promises of SemVer. •Don’t do SemVer

    if you’re afraid to increment major. @hynek

36. Takeaways •Don’t believe the promises of SemVer. •Don’t do SemVer

    if you’re afraid to increment major. •Try CalVer! @hynek

37. @hynek CalVer.org vrmd.de