Poetry doesn’t find the right thing to download

[ThatXliner]

• I am on the latest Poetry version.
• I have searched the issues of this repo and believe that this is not a duplicate. (At least, abn told me this is a new bug (discord))
• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option).

• OS version and name: 11.2.1 (macOS Bjg Sur)
• Poetry version:
• Link of a Gist with the contents of your pyproject.toml file:
  (See below)

Issue

Alrighty. I'm on Big Sur, and I want to install Jinja2. Jinja2 has no wheel for Big Sur. Yet Poetry still chooses the latest macOS wheel (Catalina). Then it fails because it is not the right one. Poetry should be able to detect that it is not the correct wheel and/or fallback to installing via sdist.

This hack (a little modified) worked!

Before the hack, it looked a little like this:

[abn]

poetry run python -c 'import packaging.tags; print(list(str(t) for t in packaging.tags.sys_tags()))'

Returns: https://gist.github.com/ThatXliner/5cc7a5ecdb86f0308cd9c7ae1267707e

[abn]

This looks like it is caused by pypa/packaging#318. Effectively we use pacakging.tags.sys_tags() internally to identify supported tags.

Master should be using a fixed packaging version.

You can test using poetry from master, as follows.

pipx install --force --suffix=@master 'poetry @ git+https://github.com/python-poetry/poetry.git@master'
poetry@master new foobar
poetry@master add MarkupSafe

[ThatXliner]

It works (although now the normal poetry 1.1.5 works too). Just saying, the UI for 1.2.0a0 (master version as of writing this comment) is whack.

It just stays at "installing"

[abn]

1.1.5 might work because it got cached?

[ThatXliner]

Hm maybe! I will try again probably this weekend

[ThatXliner]

Cannot reproduce anymore (even with deleted cache) (version 1.1.10)

[github-actions]

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