(feat): full v2 compat via python fallback #159

Job	Run time
build sdist	16s
build on linux (x86_64 - 2_28)	4m 37s
build on linux (aarch64 - 2_28)	4m 7s
build on macos (x86_64)	3m 15s
build on macos (aarch64)	3m 19s
build on windows (x86_64)	12m 5s
build on linux (armv7 - 2_28)	4m 23s
build on linux (ppc64le - 2_28)	4m 16s
build on linux (x86_64 - musllinux_1_2)	3m 51s
build on linux (aarch64 - musllinux_1_2)	3m 56s
build on linux (armv7 - musllinux_1_2)	3m 57s
build on windows (i686)	12m 35s
version	0s
inspect	2s
publish	0s
	1h 0m 39s

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