Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Speaker Deck
PRO
Sign in
Sign up
for free
On the Meaning of Version Numbers
Hynek Schlawack
April 25, 2020
0
83
On the Meaning of Version Numbers
Hynek Schlawack
April 25, 2020
Tweet
Share
More Decks by Hynek Schlawack
See All by Hynek Schlawack
hynek
0
47
hynek
1
1.8k
hynek
0
2.4k
hynek
2
5.4k
hynek
4
10k
hynek
1
2k
hynek
1
10k
hynek
3
1.1k
hynek
1
280
Featured
See All Featured
kneath
294
39k
marcelosomers
221
15k
afnizarnur
176
14k
reverentgeek
167
7.3k
imathis
479
150k
shpigford
165
19k
swwweet
206
6.9k
cherdarchuk
71
260k
chriscoyier
145
20k
jeffersonlam
329
15k
trallard
14
720
erikaheidi
14
4.3k
Transcript
Hynek Schlawack On the Meaning of Version Numbers @hynek
Semantic Versioning @hynek
1.2.3 micro @hynek
1.2.3 minor micro @hynek
1.2.3 major minor micro @hynek
SemVer is a poor choice for most projects. @hynek
SemVer doesn’t deliver on its promises. @hynek
“I can choose to only get bugfixes.” https://xkcd.com/1172/ @hynek Hyrum’s
Law
Very few open source projects have the resources to maintain
more than one release branch (properly). “I can choose to only get bugfixes.” @hynek
If You Pin Major Version In Your Applications @hyne
-No security updates. If You Pin Major Version In Your
Applications @hyne
-No security updates. -The longer you wait, the harder it
gets. If You Pin Major Version In Your Applications @hyne
@hynek If You Pin Major Version In Your Public Package
your-pkg urllib3 1.25.9
@hynek If You Pin Major Version In Your Public Package
your-pkg urllib3 1.25.9 User’s App
@hynek If You Pin Major Version In Your Public Package
your-pkg urllib3 1.25.9 User’s App <2.0
@hynek If You Pin Major Version In Your Public Package
your-pkg urllib3 1.25.9 User’s App <2.0 2.0.0
@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
@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
@hynek
1. Have tests. @hynek
1. Have tests. 2. Pin your dependencies. @hynek
1. Have tests. 2. Pin your dependencies. 3. Try to
update dependencies. @hynek
1. Have tests. 2. Pin your dependencies. 3. Try to
update dependencies. 4. See if tests still pass. @hynek
1. Have tests. 2. Pin your dependencies. 3. Try to
update dependencies. 4. See if tests still pass. 5. GOTO 3 @hynek
Almost nobody does SemVer correctly. @hynek
https://0ver.org @hynek
A concept that most people get wrong is not a
useful concept for most people. @hynek
SemVer is a poor choice for most projects. @hynek
Acceptance @hynek
@hynek
Calendar Versioning @hynek
• Toyota 2020 Yaris • pip 20.0.2 • Ubuntu 20.04
• certifi 2020.4.5.1 @hynek
Takeaways @hynek
Takeaways •Don’t believe the promises of SemVer. @hynek
Takeaways •Don’t believe the promises of SemVer. •Don’t do SemVer
if you’re afraid to increment major. @hynek
Takeaways •Don’t believe the promises of SemVer. •Don’t do SemVer
if you’re afraid to increment major. •Try CalVer! @hynek
@hynek CalVer.org vrmd.de