Issue with installing GitPython on Windows 10 / Python 3.7

• 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: Windows 10
• Poetry version: 0.12.17
• Link of a Gist with the contents of your pyproject.toml file: https://gist.github.com/aaront/9c1156015284a29f7c2bb5cd9435fdc8

Issue

When trying to install the GitPython dependency on Windows 10 (with Python 3.7) in a project, I get the following error:

[PermissionError]
[WinError 5] Access is denied: 'C:\\Users\\aaron\\AppData\\Local\\Temp\\tmplx22xv9u\\unpacked\\gitdb-0.6.4\\gitdb\\test\\fixtures\\objects\\88\\8401851f15db0eed60eb1bc29dec5ddcace911'

(I’ve logged the output of poetry install -vvv in the gist: https://gist.github.com/aaront/9c1156015284a29f7c2bb5cd9435fdc8 )

Repeated attempts to install the package yield the same result (even attempted on 2 different machines). Also attempted to install the gitdb dependency itself first, to the same issue.

Installing this inside Ubuntu/WSL works without issues:

Creating virtualenv gitypython-test-py3.7 in /home/aaron/.cache/pypoetry/virtualenvs
Updating dependencies
Resolving dependencies... (1.1s)

Writing lock file


Package operations: 14 installs, 0 updates, 0 removals

  - Installing zipp (0.5.2)
  - Installing importlib-metadata (0.18)
  - Installing smmap2 (2.0.5)
  - Installing atomicwrites (1.3.0)
  - Installing attrs (19.1.0)
  - Installing ddt (1.2.1)
  - Installing gitdb (0.6.4)
  - Installing gitdb2 (2.0.5)
  - Installing more-itertools (7.2.0)
  - Installing pluggy (0.12.0)
  - Installing py (1.8.0)
  - Installing six (1.12.0)
  - Installing gitpython (2.1.12)
  - Installing pytest (3.10.1)
  - Installing gitypython-test (0.1.0)

[aaront]

I should also note installing this with pip inside when running poetry shell does work.

[abn]

The reported issue was fixed with https://github.com/python-poetry/poetry/commit/c12d86b7. Other cases covered in #5510.