poetry 0.10.1 on python 3.6 fails to install pytest-{code,doc}style due to python ~= 3.5

[pauricthelodger]

Hey there,

Maybe I'm misunderstanding pep-440, pytest-codestyle and pytest-docstyle both have the compatible release identifier of ~=3.5 for python, which I've been assuming means 3.5 up to 4.0? If so, poetry 0.10.1 is failing to install either of them into the current project python 3.6 venv with:

[SolverProblemError]                             
Because no versions of pytest-codestyle match >1.2,<1.2.1 || >1.2.1,<1.2.2 || >1.2.2,<2.0      
 and pytest-codestyle (1.2.0) requires Python ~=3.5, pytest-codestyle is forbidden.         
And because pytest-codestyle (1.2.1) requires Python ~=3.5, pytest-codestyle is forbidden.  
So, because pytest-codestyle (1.2.2) requires Python ~=3.5                                                                                                                  
and pondus depends on pytest-codestyle (^1.2), version solving failed.

Thanks!

[sdispater]

Yes, there is a confusion on the part of poetry here.

Basically, poetry treats ~=3.5 as ~3.5 which in semver means >=3.5, <3.6 (see https://poetry.eustace.io/docs/versions/#tilde-requirements). But PEP 440 says that it should mean >=3.5, <4.0.

I will see how I can fix this.

[pauricthelodger]

Ahh, ouch! Thanks for the info and good luck with it =)

[sdispater]

This should be fixed in the latest release (0.10.2)

[pauricthelodger]

Can confirm, works in 0.10.2 - cheers for that! =)