pyinc is, to my knowledge, the first pure-Python, stdlib-only implementation of a Salsa/Skyframe-style incremental query kernel with a documented from-scratch consistency contract. Prior Python incremental-computation work either targets narrow domains (TA indicators, ML experiment tracking) or depends on a platform (think Palantir Foundry); pyinc is a general-purpose kernel you can vendor into any project. v1.0.1 is now available on pypi!