poetry error "'setup.py' [...] not found" when it exists

Question

I'm migrating my packaging tool for a Python project from pipenv to poetry.

However, when attempting to install jaro-winkler (using poetry add jaro-winkler), I get the following error:

  • Installing jaro-winkler (2.0.1.linux-x86_64): Failed

  EnvCommandError

Command ['/Users/user/Library/Caches/pypoetry/virtualenvs/project-K9Q4AUpY-py3.8/bin/pip', 'install', '--no-deps', 'file:///Users/user/Library/Caches/pypoetry/artifacts/45/cc/59/250d5db2cbcb15286dbae09b9f00727ea007ee685834709a5ac2772716/jaro_winkler-2.0.1.linux-x86_64.tar.gz'] errored with the following return code 1, and output: 
Looking in indexes: https://pypi.org/simple
  Processing /Users/user/Library/Caches/pypoetry/artifacts/45/cc/59/250d5db2cbcb15286dbae09b9f00727ea007ee685834709a5ac2772716/jaro_winkler-2.0.1.linux-x86_64.tar.gz
  ERROR: file:///Users/user/Library/Caches/pypoetry/artifacts/45/cc/59/250d5db2cbcb15286dbae09b9f00727ea007ee685834709a5ac2772716/jaro_winkler-2.0.1.linux-x86_64.tar.gz does not appear to be a Python project: neither 'setup.py' nor 'pyproject.toml' found.

My first thought was to check the jaro-winkler project on Github to check that there is indeed a setup.py or pyproject.toml file, as per the error message ... does not appear to be a Python project: neither 'setup.py' nor 'pyproject.toml' found.

But it's clear there is a setup.py file, see here.

Why is poetry failing to find it and install it correctly?

Answer 1

The package is not installed from GitHub. It is installed from PyPi. And there the content of the file looks unexpected. See https://pypi.org/project/jaro-winkler/2.0.1/#files