I have a python_library with

compatibility="CPython>=2.7,<3"

and it depends on python requirement

more-itertools

(no version provided). Pants will install the latest version of

more-itertools

despite it is not compatible with Python 2.7. This is expected behavior for version 1.12? (I know I can pin the version but would like to confirm my observation)

Hm, currently we pin to <6.0.0 when using Python 2. Which version is being resolved?

8.0.2, the latest

Ah, found it. You’ll want to update to at least 1.15.0.dev3 for the fix for this issue: https://www.pantsbuild.org/notes-1.15.x.html#heading_dev_121

Thanks Eric. (Next time I will remember to search release note first, but sometimes it is so attempting to just ask on slack since it is so easy)

You’re welcome! When updating, we recommend going one major version at a time so that you can see all the deprecation warnings. E.g. go from 1.14.0 to 1.15.0 to 1.16.0. Simply running

./pants

will show any deprecated options, but certain deprecations unfortunately only happen at runtime, such as warning of upcoming changes to the default values for options