release: bump to version 1.2.0rc1

[finswimmer]

Requires release of poetry-core 1.1.0rc1 first python-poetry/poetry-core#443

Added

• Added support for subdirectories in git dependencies (#5172)
• Added support for yanked releases and files (PEP-592) (#5841)
• Virtual environments can now be created even with empty project names (#5856)
• Added support for nushell in poetry shell (#6063)

Changed

• Poetry now falls back to gather metadata for dependencies via pep517 if parsing pyproject.toml fails (#5834)
• Replaced Poetry's helper method canonicalize_name() with packaging.utils.canonicalize_name() (#6022)
• Removed code for the export command, which is now provided via plugin (#6128)
• Extras and extras dependencies are now sorted in the lock file (#6169)
• Removed deprecated (1.2-only) CLI options (#6210)

Fixed

• Fixed an issue where symlinks in the lock file were not resolved (#5850)
• Fixed a tomlkit regression resulting in inconsistent line endings (#5870)
• Fixed an issue where the POETRY_PYPI_TOKEN_PYPI environment variable wasn't respected (#5911)
• Fixed an issue where neither Python nor a managed venv can be found, when using Python from MS Store (#5931)
• Improved error message of poetry publish in the event of an upload error (#6043)
• Fixed an issue where poetry lock fails without output (#6058)
• Fixed an issue where Windows drive mappings break virtual environment names (#6110)
• tomlkit versions with memory leak are now avoided (#6160)
• Fixed an infinite loop in the solver (#6178)
• Fixed an issue where latest version was used instead of locked one for vcs dependencies with extras (#6185)

Docs

• Document use of the subdirectory parameter (#5949)
• Document suggested tox config for different use cases (#6026)

[radoering]

Bumping to the next poetry-core release requires #6163. I added a vcs dev dependency on poetry-core in this PR so we can also merge it and remove the dev dependency when bumping poetry-core. Alternatively, the PR can be updated as soon as a core release is done.

[finswimmer]

Alternatively, the PR can be updated as soon as a core release is done.

IMO this is the more clean way and we should do it like this.

[dimbleby]

There are a handful of fixes in cleo since 1.0.0a5 which fix bugs reported in this repository.

I'd much rather that poetry just got on and cut its own release than that it get blocked on cleo: but if a cleo release is just a button-press away then it would be nice to do that and pick it up here.

[radoering]

New entry:

• Fixed an infinite loop in the solver (#6178)

[neersighted]

Blocking this on #6185, after that is finished/in, LGTM.

[mkniewallner]

Just need to add #6185 (which was a blocker) in Fixed, and #5841 in Added, and we should be good to go.

[github-actions]

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