(feat): full v2 compat via python fallback #156

Job	Run time
build sdist	22s
build on linux (x86_64 - 2_28)	4m 26s
build on linux (aarch64 - 2_28)	4m 21s
build on macos (x86_64)	3m 27s
build on macos (aarch64)	3m 18s
build on windows (x86_64)	11m 58s
build on linux (armv7 - 2_28)	4m 33s
build on linux (ppc64le - 2_28)	4m 20s
build on linux (x86_64 - musllinux_1_2)	4m 7s
build on linux (aarch64 - musllinux_1_2)	4m 3s
build on linux (armv7 - musllinux_1_2)	3m 55s
build on windows (i686)	12m 17s
inspect	6s
version	0s
publish	0s
	1h 1m 13s

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