• 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: windows 11, also fails on linux

• Poetry version: 1.2.0-beta.1

• Link of a Gist with the contents of your pyproject.toml file: https://gist.github.com/nekitdev/99b0cd36e9fd32712f38401439823cc1

Issue

For packages with . in the name:

[tool.poetry]
name = "example.py"

Poetry correctly builds wheels and sdists with example.py in the file name.
However, when uploading to PyPI with the canonical name (i.e. example-py), poetry publish fails with the following error:

HTTP Error 400: Start filename for 'example-py' with 'example-py'.