> Funny that the LSP wanted to give IDEs a way to move fast, by getting its info directly from the compiler and then slow compiling languages like Rust built a

> Funny that the LSP wanted to give IDEs a way to move fast, by getting its info directly from the compiler and then slow compiling languages like Rust built another tool (the analyzer) to make IDEs fast again. I don't think that was the main goal. The main goal was giving a standardised protocol for implementing language support in IDEs, so instead of needing n * m implementations for n IDEs and m languages, only m implementations are required. The idea that you could use the language's compiler to implement this was only a bonus (and it's not a very good one in practise: the requirements on parsing and analysing code as it's being edited are very different from when compiling. That's the core reason for rust-analyser taking over from RLS. Without the LSP concept you could just as well build the compiler as a library into whatever plugin architechture you had).