GitHub - malisper/pgrust: Postgres rewritten in Rust, now passing 100% of the Postgres regression tests

pgrust targets compatibility with Postgres 18.3 and matches Postgres's expected output across more than 46,000 regression queries. pgrust is disk compatible with Postgres and can boot from an existing Postgres 18.3 data directory. The goal is to make Postgres easier to change from the inside: keep the behavior Postgres-shaped, keep the real Postgres tests as the oracle, and use Rust plus AI-assist