What’s new: We’ve open-sourced Retrie, a code refactoring tool for Haskell that makes codemodding faster, easier, and safer. Using Retrie, developers can efficiently rewrite large codebases (exceeding 1 million lines), express rewrites as equations in Haskell syntax instead of regular expressions, and avoid large classes of codemodding errors. Retrie’s features include the ability to rewrite expre
![Retrie: Haskell refactoring made easy](https://cdn-ak-scissors.b.st-hatena.com/image/square/2553fb7387b162fdc4253cba6eaf671fcb64746a/height=288;version=1;width=512/https%3A%2F%2Fengineering.fb.com%2Fwp-content%2Fuploads%2F2020%2F10%2FOSiB_BlueGray.jpg)