Dots in package names are getting replaced by underscores since 1.2.0

[SvenBecker]

• Poetry version: 1.2.0/1.2.1
• Python version: 3.8/3.9
• OS version and name: macOS/Linux

• I am on the latest stable Poetry version, installed using a recommended method.
• I have searched the issues of this repo and believe that this is not a duplicate.
• I have consulted the FAQ and blog for any relevant entries or release notes.
• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option) and have included the output below.

Issue

Given a pyproject.toml file like the following

[tool.poetry]
name = "com.namespace.package"
version = "5.3.0"

previously the resulting wheel name after running poetry build was com.namespace.package-5.3.0-py3-none-any.whl. Now it is
com_namespace_package-5.3.0-py3-none-any.whl. Same applies to metadata on various locations. Unfortunately we can not simply rename our packages due to permission handling based on artifact names.

[dimbleby]

essentially duplicate #5782

[rkhwaja]

This is still broken in 1.3.2. It worked in 1.1.15

My package name is fs.onedrivefs. The files produced by poetry build are fs_onedrivefs*. The dist-info folder in the wheel is similarly renamed. The name in the METADATA file is changed to fs-onedrivefs.

Can I just reopen this bug?

[neersighted]

That's not a bug, that's the expected filename as mandate by the packaging standards.

[rkhwaja]

Thanks. I see your point about the all the renamings with the underscore. However, I don't think that covers the changing of the name field in the METADATA file. It causes the name of the package to be wrong in pip freeze for instance.

[petergaultney]

PEP 491 is apparently deferred - are we certain it's a packaging standard?

Incidentally, importlib.metadata.version does not successfully read the METADATA for packages built by poetry, because of the dots being replaced by underscores.

[neersighted]

Sorry, that was a bad citation. PEP 625 is the authority for sdist names, and PEP 427 is canonical for wheels. Both impose the same escaping rules.

[github-actions]

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