This comment doesn't make much sense. LSP is just a protocol, implementing package detection is the responsibility of the language server. The second thing you

This comment doesn't make much sense. LSP is just a protocol, implementing package detection is the responsibility of the language server. The second thing you're asking about sounds more like a unified LSP client which is totally possible. It would actually be pretty easy. VSCode could actually improve this a lot since language clients are mostly boilerplate. All that said I think you're undervaluing what LSP/DAP actually gets you. It's a language agnostic API for PL tools, which includes compilers and virtual machines. All you need to be able to do is parse JSON and you can begin writing a reactive compiler that integrates into any code editor.