Add elixir language server.

jrpotter/neovim/default.nix

@@ -32,6 +32,7 @@ let
     plugin = (pkgs.vimPlugins.nvim-treesitter.withPlugins (
       ps: with ps; [
         bash
+        elixir
         lua
         nix
         python
@@ -68,6 +69,7 @@ in
 
   imports = [
     ./lang/bash.nix
+    ./lang/elixir.nix
     ./lang/lean.nix
     ./lang/lua.nix
     ./lang/nix.nix

jrpotter/neovim/lang/elixir.nix

@@ -0,0 +1,18 @@
+{ pkgs, ... }:
+{
+  programs.neovim = {
+    nvim-lspconfig = ''
+      require('init.lsp').setup(require('lspconfig').elixirls) {
+        -- Keep command relative. Compatibility of `elixir-ls` depends tightly
+        -- on -- the version of elixir being used so this allows local (i.e.
+        -- within nix shells) versions of `elixir-ls` to override the version
+        -- specified -- in `extraPackages`.
+        cmd = { 'elixir-ls' },
+      }
+    '';
+
+    extraPackages = with pkgs; [
+      elixir-ls
+    ];
+  };
+}