Tweag

Haskell製のtoolとか、Nix関連のtoolを作ってる企業

We employ researchers with strong academic backgrounds and ask them to keep pushing the envelope. Their sole focus is to identify future directions for programming languages, and we bring research to production faster than ever before. Tweagers are working on linear types, dependent types and mobile code that runs everywhere.

Call JavaScript from Haskell, and vice versa!

We were among the first outside of Google to adopt Bazel

らしい