Emacs lsp-mode (language server) + elixir-ls anyone?

Definitely agree—I use spacemacs daily but know just enough elisp to be dangerous… literally. Trying get mix format to format my code on save i managed to get my emacs into a situation where I literally could not close it short of a force kill. Don’t ask me how, I have no idea.

So the moral of the story is that I’m at the tender mercies of those brave souls who forge a path for us mortals to tread. I wish I could help move integrations like alchemist forward, but seriously, I’m a danger to others. I’m going to check out this lsp-mode and pray I don’t manage set off a WarGames situation. Will report back if I’m successful, but don’t wait too long to send out search parties.

Seems an interesting path to move into!

My elisp is also potentially dangerous heheh, I’ve been using emacs for a couple of months only, so I can only do the basic stuff… but gonna play a bit with it, at least take a look at what they did for the other languages

@karmajunkie on the mix format issue, I’m using GitHub - anildigital/mix-format.el: Emacs package to format Elixir code in Emacs with elixir-mode · GitHub, so far no problems with it!

I am using mix-format too, though it is a bit slower on Emacs than on VS Code. The issue is that it is not on Melpa yet so I`ve copied it to my config.

Also, the creator of mix-format is interested in merging it into elixir-mode itself. Though it seems it is blocked currently because there is a shortage of elisp reviewers =/

Was trying to hack my way through this, but it still doesn’t work. Here is the wip as for now: https://gist.github.com/rodrigues/a7277c70ab9be361390fa52f923e7e03

Any luck with that approach?

BTW, Spacemacs just added LSP support. Maybe you can see what they did there to make it work.

I’ve just gotten around to publishing a precompiled release package which includes .sh and .bat scripts for launching the language server and debugger: Releases · JakeBecker/elixir-ls · GitHub

I’m hoping this makes it easier to integrate into IDE plugins. Hope that helps @rodrigues and everyone!

It’s definitely still in progress, but now it’s talking to elixir-ls behind the scenes!! https://gist.github.com/rodrigues/a7277c70ab9be361390fa52f923e7e03

Thanks @JakeBecker, the releases really helped!

53988×342 89.2 KB

EDIT: moved it into a github repo. PRs are more than welcome!

https://github.com/rodrigues/lsp-elixir

I’m using Alchemist with elixir-ls.

https://github.com/tonini/alchemist.el/pull/341

I’ve managed to get elixir-ls through alchemist working too. Here is my configuration just in case anyone would want to give it a try:

First, I’ve cloned @Trevoke’s for on ~/.alchemist. Then on my init.el (with use-package already configured), I have:

(use-package company
  :ensure t
  :diminish company-mode
  :bind ("M-/" . company-complete)
  :defer t
  :config
  (global-company-mode))

 (use-package company-quickhelp
  :after (company)
  :ensure t
  :config
  (company-quickhelp-mode))

(use-package lsp-mode
  :ensure t)

(use-package lsp-ui
  :after (lsp-mode)
  :ensure t)

(use-package company-lsp
  :after (company lsp-mode)
  :config
  (push 'company-lsp company-backends)
  :ensure t)

(use-package alchemist
  :after (elixir-mode)
  :load-path "../.alchemist"
  :config
  (require 'alchemist-elixir-ls)
  (require 'alchemist-goto)
  (require 'alchemist))

Hope this helps!