Poetry cannot be installed with Pip 18.1 (released 5 Oct)

[jhrmnn]

• I am on the latest Poetry version.
• I have searched the issues of this repo and believe that this is not a duplicate.

• OS version and name: macOS 10.14
• Poetry version: 0.11.5

Issue

Poetry installation via get-poetry.py fails with Pip 18.1.

22:30 ~/Downloads python3 -m venv test
22:30 ~/Downloads test/bin/pip install --upgrade pip==18.0
Collecting pip==18.0
  Using cached https://files.pythonhosted.org/packages/5f/25/e52d3f31441505a5f3af41213346e5b6c221c9e086a166f3703d2ddaf940/pip-18.0-py2.py3-none-any.whl
Installing collected packages: pip
  Found existing installation: pip 10.0.1
    Uninstalling pip-10.0.1:
      Successfully uninstalled pip-10.0.1
Successfully installed pip-18.0
You are using pip version 18.0, however version 18.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
22:30 ~/Downloads curl -sSL https://raw.githubusercontent.com/sdispater/poetry/master/get-poetry.py | test/bin/python
Retrieving metadata

Installing version: 0.11.5
  - Getting dependencies
  - Vendorizing dependencies
  - Installing poetry

poetry (0.11.5) successfully installed!
22:30 ~/Downloads rm -rf test
22:31 ~/Downloads python3 -m venv test
22:31 ~/Downloads test/bin/pip install --upgrade pip==18.1
Collecting pip==18.1
  Using cached https://files.pythonhosted.org/packages/c2/d7/90f34cb0d83a6c5631cf71dfe64cc1054598c843a92b400e55675cc2ac37/pip-18.1-py2.py3-none-any.whl
Installing collected packages: pip
  Found existing installation: pip 10.0.1
    Uninstalling pip-10.0.1:
      Successfully uninstalled pip-10.0.1
Successfully installed pip-18.1
22:31 ~/Downloads curl -sSL https://raw.githubusercontent.com/sdispater/poetry/master/get-poetry.py | test/bin/python
Retrieving metadata

Installing version: 0.11.5
  - Getting dependencies
  - Vendorizing dependencies
  - Installing poetry
An error has occured: Command '('/Users/hermann/Downloads/test/bin/python', '-m', 'pip', 'install', '--upgrade', '--no-deps', '/var/folders/hk/jzlc3y0x0svcny3v758kmvwr0000gn/T/poetry-installer-v1mvs_fr/poetry-0.11.5-py2.py3-none-any.whl')' returned non-zero exit status 2.
Processing /var/folders/hk/jzlc3y0x0svcny3v758kmvwr0000gn/T/poetry-installer-v1mvs_fr/poetry-0.11.5-py2.py3-none-any.whl
Installing collected packages: poetry
Exception:
Traceback (most recent call last):
  File "/Users/hermann/Downloads/test/lib/python3.7/site-packages/pip/_internal/cli/base_command.py", line 143, in main
    status = self.run(options, args)
  File "/Users/hermann/Downloads/test/lib/python3.7/site-packages/pip/_internal/commands/install.py", line 366, in run
    use_user_site=options.use_user_site,
  File "/Users/hermann/Downloads/test/lib/python3.7/site-packages/pip/_internal/req/__init__.py", line 49, in install_given_reqs
    **kwargs
  File "/Users/hermann/Downloads/test/lib/python3.7/site-packages/pip/_internal/req/req_install.py", line 760, in install
    use_user_site=use_user_site, pycompile=pycompile,
  File "/Users/hermann/Downloads/test/lib/python3.7/site-packages/pip/_internal/req/req_install.py", line 382, in move_wheel_files
    warn_script_location=warn_script_location,
  File "/Users/hermann/Downloads/test/lib/python3.7/site-packages/pip/_internal/wheel.py", line 514, in move_wheel_files
    for row in sorted(outrows):
TypeError: '<' not supported between instances of 'int' and 'str'

22:32 ~/Downloads [2] 

[jtbeach]

Bug in pip -- see pypa/pip#5868

[y4n9squared]

There has been a discussion in pypa/pip#5868 regarding this issue, and based on pypa/pip#5868 (comment), it seems like the bug is in Poetry. If the maintainers agree that this is the root cause, it's an easy fix.

[sdispater]

Actually this is not an issue in how Poetry builds wheels, so there is nothing to be done in the code.

It actually is an issue in the current installer (get-poetry.py). This has already been fixed on the develop branch by the implementation of a new installer (see #378) and the next 0.12.0 release will make this new installer available.

So, as far as I know, this is not an issue on pip's end.

[y4n9squared]

@sdispater thanks for the update! I think there is currently some discussion whether or not this "issue" is really an issue or just needs to be handled properly for all RECORD files. #378 will resolve this issue for Poetry though.

pypa/pip#5868 (comment)

[sdispater]

This has been fixed now that the get-poetry.py installer has been updated.

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.