Do not do mpy-cross builds of this library.

[dhalbert]

This library is not meant to run on CircuitPython directly. It does need mpy bundles build (they don't work anyway: #34), and now any CI PR build is failing because it's trying to run mpy-cross, but there's some syntax that's not compatible (def x(a, /):).

Now that we've factored out the build options, I don't see a way to force mpy-cross builds not to be done. There are parameters to the release actions that let you suppress certain bundles from being built, and those should be used. But there is no corresponding parameter in the build action. If you agree, we could open an appropriate issue in https://github.com/adafruit/circuitpython-build-tools.

@FoamyGuy @tekktrik

[tekktrik]

I agree! I'm out until next week, but can happily work on that issue.

[tekktrik]

Actually, can't we just use the --ignore option to the build script?

[dhalbert]

@tekktrik points out we need to do "ignore" in the bundle build, which we can do with existing functionality, but also need an "ignore"-type thing in workflows-circuitpython-libs.

[dhalbert]

OK, looks good: https://github.com/adafruit/Adafruit_CircuitPython_Typing/releases/tag/1.10.1 has no mpy bundles. Thanks @tekktrik.