Can't install 0.13.2 with Poetry

[zupo]

TL;DR: Version 0.13.2 of openapi-core cannot be installed using Poetry. 0.13.1 can be installed fine.

More details

Given a minimal Poetry project:

[tool.poetry]
name = "test"
version = "0.1.0"
description = ""
authors = ["zupo"]

[tool.poetry.dependencies]
python = "^3.7"
openapi-core = "==0.12.0"

[tool.poetry.dev-dependencies]

[build-system]
requires = ["poetry>=0.12"]
build-backend = "poetry.masonry.api"

I can install it:

➜  tmp$ poetry install
Creating virtualenv test-BBcLBBh7-py3.7 in /Users/zupo/Library/Caches/pypoetry/virtualenvs
Updating dependencies
Resolving dependencies... (1.6s)

Writing lock file


Package operations: 12 installs, 0 updates, 0 removals

  - Installing six (1.14.0)
  - Installing zipp (3.0.0)
  - Installing attrs (19.3.0)
  - Installing importlib-metadata (1.5.0)
  - Installing pyrsistent (0.15.7)
  - Installing jsonschema (3.2.0)
  - Installing pyyaml (5.3)
  - Installing isodate (0.6.0)
  - Installing lazy-object-proxy (1.4.3)
  - Installing openapi-spec-validator (0.2.8)
  - Installing strict-rfc3339 (0.7)
  - Installing openapi-core (0.12.0)

Then I bump openapi-core version to 0.13.1. and update the project:

- openapi-core = "==0.12.0"
+ openapi-core = "==0.13.1"

➜  tmp$ poetry update
Updating dependencies
Resolving dependencies... (0.2s)

Writing lock file


Package operations: 0 installs, 12 updates, 0 removals

  - Updating six (1.14.0 /Users/zupo/Library/Caches/pypoetry/virtualenvs/test-BBcLBBh7-py3.7/lib/python3.7/site-packages -> 1.14.0)
  - Updating zipp (3.0.0 /Users/zupo/Library/Caches/pypoetry/virtualenvs/test-BBcLBBh7-py3.7/lib/python3.7/site-packages -> 3.0.0)
  - Updating attrs (19.3.0 /Users/zupo/Library/Caches/pypoetry/virtualenvs/test-BBcLBBh7-py3.7/lib/python3.7/site-packages -> 19.3.0)
  - Updating importlib-metadata (1.5.0 /Users/zupo/Library/Caches/pypoetry/virtualenvs/test-BBcLBBh7-py3.7/lib/python3.7/site-packages -> 1.5.0)
  - Updating pyrsistent (0.15.7 /Users/zupo/Library/Caches/pypoetry/virtualenvs/test-BBcLBBh7-py3.7/lib/python3.7/site-packages -> 0.15.7)
  - Updating jsonschema (3.2.0 /Users/zupo/Library/Caches/pypoetry/virtualenvs/test-BBcLBBh7-py3.7/lib/python3.7/site-packages -> 3.2.0)
  - Updating pyyaml (5.3 /Users/zupo/Library/Caches/pypoetry/virtualenvs/test-BBcLBBh7-py3.7/lib/python3.7/site-packages -> 5.3)
  - Updating isodate (0.6.0 /Users/zupo/Library/Caches/pypoetry/virtualenvs/test-BBcLBBh7-py3.7/lib/python3.7/site-packages -> 0.6.0)
  - Updating lazy-object-proxy (1.4.3 /Users/zupo/Library/Caches/pypoetry/virtualenvs/test-BBcLBBh7-py3.7/lib/python3.7/site-packages -> 1.4.3)
  - Updating openapi-spec-validator (0.2.8 /Users/zupo/Library/Caches/pypoetry/virtualenvs/test-BBcLBBh7-py3.7/lib/python3.7/site-packages -> 0.2.8)
  - Updating strict-rfc3339 (0.7 /Users/zupo/Library/Caches/pypoetry/virtualenvs/test-BBcLBBh7-py3.7/lib/python3.7/site-packages -> 0.7)
  - Updating openapi-core (0.12.0 /Users/zupo/Library/Caches/pypoetry/virtualenvs/test-BBcLBBh7-py3.7/lib/python3.7/site-packages -> 0.13.1)

Success! However, if I bump the version to 0.13.2, update/install fails:

- openapi-core = "==0.13.1"
+ openapi-core = "==0.13.2"

➜  tmp$ poetry update
Updating dependencies
Resolving dependencies... (1.7s)

[ValueError]
Could not parse version constraint: >="3.0"

The error is likely caused by this line in setup.cfg.

[p1c2u]

Hi @zupo
which pip version are you using?

[zupo]

pip-19.2.3

[zupo]

Reported upstream: python-poetry/poetry#2119