Use Python 3.8 compatible type annotation for 'str

greatscottgadgets / luna

Amaranth HDL framework for monitoring, hacking, and developing USB devices

https://greatscottgadgets.com/cynthion/

BSD 3-Clause "New" or "Revised" License

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Closed antoinevg closed 9 months ago

antoinevg commented 9 months ago

We've recently settled on Python 3.8 as our minimum supported Python version for releases.

Python 3.8 does not however support str | None syntax as it was only introduced in 3.10.

This PR uses typing.Optional instead.