Support type annotations on version variable by default

[ReK42]

Description

The default regex to find the __version__ or VERSION variable in the file specified in hatch.version.path does not currently handle typing. For example:

This works:

__version__ = "1.0.0"

This fails with ValueError: Error getting the version from source regex: unable to parse the version from the file:

__version__: str = "1.0.0"

Modifying the default regex with the below setting in pyproject.toml works in both cases:

[tool.hatch.version]
pattern = "(?i)^(__version__|VERSION)(?:: *str)? *= *([\\'\"])v?(?P<version>.+?)\\2"

This change should be fairly safe, the only reason I'm not submitting a PR is because my use case requires Python 3.7 so I'm working with an old version of hatch (1.17.1).

Use case/motivation

Adding type annotations is best current practice and is increasingly common. Supporting them in the default regex statement would prevent a lot of developers from having to troubleshoot and fix this common case when setting up/migrating their projects.

Related issues

No response

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow the Python Software Foundation's Code of Conduct