Pure-Python version

[tyteen4a03]

Due to limitations I won't go into, I can't use any C extensions at my project. Is there a fallback version that is pure Python?

[haata]

Unfortunately no.

This would be a huge project (and likely fall flat on the performance side).

[kentonv]

FWIW I suspect a pure-Python implementation of the serialization layer could perform better than the C extension version, since the FFI cost is probably dominating the actual implementation cost. But it would indeed be a huge project.