Bump mypy from 1.20.2 to 2.1.0

[dependabot]

Bumps mypy from 1.20.2 to 2.1.0.

Changelog

Sourced from mypy's changelog.

Mypy Release Notes

Next Release

Mypy 2.1

We’ve just uploaded mypy 2.1.0 to the Python Package Index (PyPI). Mypy is a static type checker for Python. This release includes new features, performance improvements and bug fixes. You can install it as follows:

python3 -m pip install -U mypy

You can read the full documentation for this release on Read the Docs.

librt.vecs: Fast Growable Array Type for Mypyc

The new librt.vecs module provides an efficient growable array type vec that is optimized for mypyc use. It provides fast, packed arrays with integer and floating point value types, which can be several times faster than list, and tens of times faster than array.array in code compiled using mypyc. It also supports nested vec objects and non-value-type items, such as vec[vec[str]].

Refer to the documentation for the details.

Contributed by Jukka Lehtosalo.

librt.random: Fast Pseudo-Random Number Generation

The new librt.random module provides fast pseudo-random number generation that is optimized for code compiled using mypyc. It can be 3x to 10x faster than the stdlib random module in compiled code.

Refer to the documentation for the details.

Contributed by Jukka Lehtosalo (PR 21433).

Mypyc Improvements

• Make compilation order with multiple files consistent (Piotr Sawicki, PR 21419)
• Fix crash on accessing StopAsyncIteration (Piotr Sawicki, PR 21406)
• Fix incremental compilation with separate flag (Vaggelis Danias, PR 21299)

Fixes to Crashes

• Fix crash on partial type with --allow-redefinition and global declaration (Jukka Lehtosalo, PR 21428)
• Fix broken awaitable generator patching (Ivan Levkivskyi, PR 21435)

Changes to Messages

... (truncated)

Commits

• c1c336d Remove +dev from version
• 74df14b Add changelog for mypy 2.1 (#21464)
• 022d9bc Revert "TypeForm: Enable by default (#21262)"
• 8826288 [mypyc] Document librt.random (#21463)
• 3f4067b Bump librt version to 0.11.0 (#21458)
• 2b1eb58 [mypyc] Enable incremental self-compilation (#21369)
• 8152f4a Respect file config comments for stale modules (#21444)
• 116d60b Fix nondeterminism from nonassociativity of overload joins (#21455)
• 6c4af8e Fix function call message change for small number of args (#21432)
• 4b8fdca [mypyc] Add librt.random module (#21433)
• Additional commits viewable in compare view

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[sobolevn]

@copilot please fix the tests for the new mypy version. Please, be sure that tests still test old behavior and new mypy version is supported without any regressions for end users.

[Copilot]

@copilot please fix the tests for the new mypy version. Please, be sure that tests still test old behavior and new mypy version is supported without any regressions for end users.

Fixed in commit 80338a4. Three issues were addressed for mypy 2.1.0:

1. item.py: Added .meta_ex.json and .meta_ex.ff to the cache cleanup suffixes (mypy 2.1.0 adds this new file type), and updated remove_cache_files to detect and use the new sharded SQLite cache (16 shards: cache.0.db...cache.15.db) instead of only looking for the legacy single cache.db.

2. test_mypy_cache.py: Updated get_created_cache_files to correctly open sharded SQLite caches by detecting numbered shard files.

3. test_site_packages.py: Fixed the typeshed path to use the actual mypy installation directory (Path(mypy.__file__).parent.parent) rather than site.getsitepackages()[0], which may not match where mypy is actually installed.

All 97 tests pass with mypy 2.1.0. Old behavior (legacy JSON/FF filesystem caches and single-shard SQLite) is preserved via backward-compatible detection.

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.

[sobolevn]

@UnknownPlatypus can you please take a look at this issue? We have a cache related problem with the newer mypy :(

Looks like we need some proper abstraction for cache / discussion with the mypy team about it.

[UnknownPlatypus]

Copilot was not successful ?

[sobolevn]

In my assesment it produced some really strange code that I don't understand :)