Does anyone have a good solution for orchestrating language servers? With a mildly complex code base (grpc/thirft + python + build system) there's a lot of languages in play. At any small to medium company you're looking at around >5 different languages used. Downloading, configuring, starting, and providing context to (what files can see what other files, what the final build looks like, etc) to all of the language servers you want to use can sometimes be a huge pain. This is something that IntellJ with gradle does very easily.
What works for me is having a script per project/directory a script that set all the configs (as environment variables) and various other functions for that project. If the script exists then it runs when I cd in and other scripts can use the environment variables. So a script like start-language-server would check for the environment variable PYTHONLS and PYTHONLSPORT and start it if it's not running, or it can be started straight from the cd.
Never had to handle multiple languages in one project though, I find vims builtin completion enough for the rest.