Infinite dependency loop for azure-core

[davidmweber]

• OS version and name: Ubuntu Linux 20.04 and OSX Catalina
• Poetry version: 1.16 (as installed today with poetry self update)
• Link of a Gist with the contents of your pyproject.toml file: pyproject.toml

Issue

When running poetry update on this file, it gets stuck in an infinite loop. The output of poetry update -vvv is

   1: fact: isodate (0.6.0) depends on six (*)
   1: selecting isodate (0.6.0)
PyPI: 10 packages found for requests-oauthlib >=0.5.0
   1: fact: requests-oauthlib (1.3.0) depends on oauthlib (>=3.0.0)
   1: fact: requests-oauthlib (1.3.0) depends on requests (>=2.0.0)
   1: selecting requests-oauthlib (1.3.0)
   1: derived: oauthlib (>=3.0.0)
PyPI: 20 packages found for pycparser *
   1: selecting pycparser (2.20)
PyPI: 4 packages found for oauthlib >=3.0.0
   1: selecting oauthlib (3.1.0)
   1: fact: azure-core (1.13.0) depends on requests (>=2.18.4)
   1: fact: azure-core (1.13.0) depends on six (>=1.11.0)
   1: selecting azure-core (1.13.0)
   1: fact: azure-core (1.13.0) depends on requests (>=2.18.4)
   1: fact: azure-core (1.13.0) depends on six (>=1.11.0)
   1: selecting azure-core (1.13.0)
   1: fact: azure-core (1.13.0) depends on requests (>=2.18.4)
   1: fact: azure-core (1.13.0) depends on six (>=1.11.0)
   1: selecting azure-core (1.13.0)
   1: fact: azure-core (1.13.0) depends on requests (>=2.18.4)
   1: fact: azure-core (1.13.0) depends on six (>=1.11.0)
   1: selecting azure-core (1.13.0)
   1: fact: azure-core (1.13.0) depends on requests (>=2.18.4)

These lines just repeat.

Here is the full output up to the point where the loop is established:

loop.txt

[davidmweber]

The problem appears to be with the azure-iot-hub v 2.4.0. If I pin that to 2.3.0 then the loop disappears. Hope this helps.

[cpbotha]

Debugged this together with @davidmweber - it indeed seems to be version 2.4.0 of azure-iot-hub.

You can reproduce by running poetry update -vvv with the following minimal pyproject.toml:
https://gist.github.com/cpbotha/530961e8f959dab545c42be2615e12dc

Something awry with that package, but is there some way for poetry not to land in an infinite loop like this?

[davidmweber]

Oh but that is pretty.....

[davidmweber]

I can confirm this bug still exists for poetry 1.1.7

[davidmweber]

I can confirm that this is still present in 1.1.8

[dimbleby]

on the master branch, poetry says:

Could not parse version constraint: !=3.3*

which isn't super-helpful about where that error comes from: but it's a start, and it's not an infinite loop.

The error actually comes from the python version requirements of azure-iot-hub, presumably this is a typo for 3.3.*

[dimbleby]

Anyone who cares to get this fixed should submit an MR to that project, fixing this line: https://github.com/Azure/azure-iot-sdk-python/blob/c56e40d82e97f0a4204efc2d7ad260933260245e/azure-iot-hub/setup.py#L83

[mkniewallner]

On Poetry 1.1.14, I was able to install the dependencies just fine (unless explicitly pinning azure-iot-hub to 2.4.0 or 2.5.0, then I would hit the infinite loop, so I believe that something was fixed in 2.6.0).

On Poetry master, as said above, we hit Could not parse version constraint: !=3.3* since parsing python_requires is possibly stricter in 1.2.x (for valid reasons).

Since the issue is with the dependency itself now, closing this, since Poetry is not at cause.

[github-actions]

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