[RecursionError] maximum recursion depth exceeded while calling a Python object

• I am on the latest Poetry version.
• I have searched the issues of this repo and believe that this is not a duplicate.
• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option).

• OS version and name: macOS Catalina 10.15.6
• Poetry version: 1.1.3
• Link of a Gist with the contents of your pyproject.toml file:

Issue

When I run poetry add scrapy, it raise an error:

[RecursionError] maximum recursion depth exceeded while calling a Python object

However, when I run poetry shell first to enter the virtual env，and then run poetry add scrapy, then everying works fine.

[abn]

@sergekir at the moment this comes via propagation from dependency markers so, it does not take into account the pypt python constraint. The per dependency python constraint is expected at the moment since we are simply propagating whats in the lock file. Will see if we can remove that later on.

[seandstewart]

Hey @abn sorry for the late response - confirmed poetry@3237 works for me!