Hydra kernel - core types, terms, DSL, eval, and primitives
copied from cf-post-staging / hydra-kernelHydra is a domain-specific language for data models and data transformations. It is based on a typed lambda calculus, and transforms data and schemas between languages in a way which maintains type conformance. Starting with 0.15, the Python release ships per-package wheels using PEP 420 implicit namespace packages, so multiple wheels install side-by-side and merge their hydra.* contents at import time.
