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