In 2013, I spent 6 months converting 0install's 29,215 lines of Python to OCaml (learning OCaml along the way). In this post, I'll describe the approach I took and how it went. There will be graphs. If you don't want to read the whole thing, the take-away is this: The new code is a similar length (slightly shorter), runs around 10x faster, and is statically type checked. ( This post also appeared