How uv Works Under the Hood
21 minute read Published: 2026-04-08A thorough walkthrough of uv's internals: the Rust crate architecture, what uv init actually does on disk, the two-thread resolver design, how PubGrub's CDCL algorithm works, batch prefetching, the forking resolver, and why these Rust-specific patterns make it 10–100x faster than pip.