Fixed

• Fixed an issue where virtual environments were created unnecessarily when running poetry self commands (#6226)
• Ensure that packages' pretty_name are written to the lock file (#6243)

Improvements

• Improved the consistency of Pool().remove_repository() to make it easier to write poetry plugins (#6231)

Docs

• Removed mentions of Python 2.7 from docs (#6235)
• Added note about the difference between groups and extras (#6232)