Support for multiple language servers for one language?

[sentriz]

hi!

coming from nvim, I am used to having multiple language servers for one given language. for me it's usually a combination of a main language server for completion, jump to def, etc and efm-langserver for linting or formatting that the main server doesn't support

for example I like to use

• typescript: tsserver + efm (with prettierd for formatting, and eslint)
• python: pyright + efm (with black for formatting, and pylint)
• sql: sqls + efm (with pg_format for formatting)
• go: gopls + golangcilint-lsp
• dockerfile: docker_ls + efm (with hadolint)

so personally I think multiple servers allows for some very powerful combining of servers and cli linters / formatters using efm (sometimes the main lsp can do formatting, but it's not the formatter I want to use)

hope this makes sense and seems useful. thanks!!

[David-Else]

It seems this is very much needed, unless I am missing some other way of doing things?

For example, having eslint running in the editor is pretty much essential for JS/TS, it is available as a language server directly from VS Code via https://www.npmjs.com/package/vscode-langservers-extracted , but how can we run it with https://github.com/typescript-language-server/typescript-language-server and the same time?

[Philipp-M]

I've started tackling this in #2507, feedback welcome

[losnappas]

Just thinking out loud here: couldn't this problem be solved with an in-between proxy lsp that forwards requests to multiple lsps? Because this problem is not only in helix (e.g. emacs eglot joaotavora/eglot#976 ), would be nice to solve this sort of thing once and for all. However, my lsp knowledge is zero so maybe there are blockers that I don't know of.