Yes this.

Clangd-19 which is current stable has very good support for modules. The only issues I’ve encountered is with import std; which quite honestly is bleeding edge.

Your tooling (clangd+cmake) has to be pretty modern t those two are also the easiest to just upgrade since it’s dev time only. And obviously if it’s a discussion you have a C++20 compatible compiler. I’m happily using modules with gcc-14, clangd 19 and cmake 3.28 other than clangd 19 those are just packages you can install in Ubuntu 24.04 which is over a year old at this point.