feat: refactor dart and elixir LSPs according to the new structure

modules/languages/elixir/config.nix

@@ -0,0 +1,66 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+with lib;
+with builtins; let
+  cfg = config.vim.languages.elixir;
+in {
+  config = mkIf (cfg.enable) {
+    vim.startPlugins = [
+      "elixir-tools"
+    ];
+
+    vim.luaConfigRC.elixir-tools = nvim.dag.entryAnywhere ''
+        local elixir = require("elixir")
+        local elixirls = require("elixir.elixirls")
+
+        elixir.setup {
+          elixirls = {
+
+
+          -- alternatively, point to an existing elixir-ls installation (optional)
+          -- not currently supported by elixirls, but can be a table if you wish to pass other args `{"path/to/elixirls", "--foo"}`
+          cmd = "${lib.getExe pkgs.elixir-ls}",
+
+          -- default settings, use the `settings` function to override settings
+          settings = elixirls.settings {
+            dialyzerEnabled = true,
+            fetchDeps = false,
+            enableTestLenses = false,
+            suggestSpecs = false,
+          },
+
+          on_attach = function(client, bufnr)
+            local map_opts = { buffer = true, noremap = true}
+
+            -- run the codelens under the cursor
+            vim.keymap.set("n", "<space>r",  vim.lsp.codelens.run, map_opts)
+            -- remove the pipe operator
+            vim.keymap.set("n", "<space>fp", ":ElixirFromPipe<cr>", map_opts)
+            -- add the pipe operator
+            vim.keymap.set("n", "<space>tp", ":ElixirToPipe<cr>", map_opts)
+            vim.keymap.set("v", "<space>em", ":ElixirExpandMacro<cr>", map_opts)
+
+            -- bindings for standard LSP functions.
+            vim.keymap.set("n", "<space>df", "<cmd>lua vim.lsp.buf.format()<cr>", map_opts)
+            vim.keymap.set("n", "<space>gd", "<cmd>lua vim.diagnostic.open_float()<cr>", map_opts)
+            vim.keymap.set("n", "<space>dt", "<cmd>lua vim.lsp.buf.definition()<cr>", map_opts)
+            vim.keymap.set("n", "<space>K", "<cmd>lua vim.lsp.buf.hover()<cr>", map_opts)
+            vim.keymap.set("n", "<space>gD","<cmd>lua vim.lsp.buf.implementation()<cr>", map_opts)
+            vim.keymap.set("n", "<space>1gD","<cmd>lua vim.lsp.buf.type_definition()<cr>", map_opts)
+            -- keybinds for fzf-lsp.nvim: https://github.com/gfanto/fzf-lsp.nvim
+            -- you could also use telescope.nvim: https://github.com/nvim-telescope/telescope.nvim
+            -- there are also core vim.lsp functions that put the same data in the loclist
+            vim.keymap.set("n", "<space>gr", ":References<cr>", map_opts)
+            vim.keymap.set("n", "<space>g0", ":DocumentSymbols<cr>", map_opts)
+            vim.keymap.set("n", "<space>gW", ":WorkspaceSymbols<cr>", map_opts)
+            vim.keymap.set("n", "<leader>d", ":Diagnostics<cr>", map_opts)
+          end
+        }
+      }
+    '';
+  };
+}

modules/languages/elixir/default.nix

@@ -0,0 +1,6 @@
+_: {
+  imports = [
+    ./config.nix
+    ./elixir-tools.nix
+  ];
+}

modules/languages/elixir/elixir-tools.nix

@@ -0,0 +1,11 @@
+{
+  config,
+  lib,
+  ...
+}:
+with lib;
+with builtins; {
+  options.vim.languages.elixir = {
+    enable = mkEnableOption "elixir support";
+  };
+}