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Description
Recently micropython dealt with the difficulty of getting the right uncrustify version by creating a micropython-uncrustify package. This looks like it'll install on windows, linux & mac.
we could do mpy-cross the "same way", probably having an mpy-cross- package so that different mpy-cross binaries are co-installable.
then, use this in circuitpython-build-tools, get rid of all the hard coding of download paths in various tools, etc.