Hey everyone. There's a new, fast combined type-checker and LSP-server available for Python called "pyrefly". The source can be found here: https://github.com/facebook/pyrefly Currently it's not possible to use this LSP-server with eglot, due to missing configuration. Attached is a patch which fixes this. -- Kind regards Jostein  In GNU Emacs 31.0.50 (build 5, aarch64-apple-darwin24.4.0, NS appkit-2575.50 Version 15.4.1 (Build 24E263)) of 2025-05-11 built on SOK67R3KWV97 Repository revision: 72ec1c2da4e6108175fc93e33ec92eec4bd1296e Repository branch: master Windowing system distributor 'Apple', version 10.3.2575 System Description: macOS 15.4.1 Configured using: 'configure --with-tree-sitter --with-native-compilation --with-imagemagick --with-harfbuzz PKG_CONFIG_PATH=:/usr/local/lib/pkgconfig:/opt/local/lib/pkgconfig' Configured features: ACL GLIB GNUTLS IMAGEMAGICK LCMS2 LIBXML2 MODULES NATIVE_COMP NOTIFY KQUEUE NS PDUMPER PNG RSVG SQLITE3 THREADS TOOLKIT_SCROLL_BARS TREE_SITTER WEBP XIM ZLIB Important settings: value of $LC_ALL: en_US.UTF-8 value of $LC_CTYPE: UTF-8 value of $LANG: en_US.UTF-8 locale-coding-system: utf-8-unix Major mode: Elisp/l Minor modes in effect: bug-reference-prog-mode: t global-git-commit-mode: t magit-auto-revert-mode: t 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