2.0.0 Release

[radoering]

This issue tracks the progress of version 2.0.0 of Poetry. Please surface any blockers or concerns you have regarding this major release here:

Blockers

• Add support for the project section (PEP 621) #9135
• Poetry 2.0 removals and other breaking changes #9136
• Lock markers and groups #9427
• Project plugins and forcing a minimum poetry version #9547
• poetry-core release
  • Add support for the project section (PEP 621) poetry-core#708
  • constraints: fix allows, allows_any and allows_all for generic constraints and increase test coverage poetry-core#732
  • markers: add new method to reduce a marker by a Python constraint poetry-core#733
  • Fixing platform_release pep440 poetry-core#722
• Changelog
• Release notes (blog)

Nice to have

...

Important changes to surface

(This is intended to be the basis for the blog post and should cover new features or any manual steps/incompatibility when upgrading)

• Add support for the project section (PEP 621) #9135
• Poetry 2.0 removals and other breaking changes #9136
• Lock markers and groups #9427
• Project plugins and forcing a minimum poetry version #9547

[dimbleby]

reviewing some pull requests that I currently have open, I guess in the nice-to-have category

• remove SimpleRepositoryPage #9166 is imo an easy just-merge-it-already
• remove no-setuptools config option #9331 and remove pip-based installer #9392 are made easy to merge if the version number is going 2.0, perhaps slightly less so otherwise
• stop using the json API at pypi #9170 is a bit harder, I think the wins in consistency and simplification are clear enough but there seems to be lingering doubt about whether this is giving up performance for sdist-only packages