plugins/ltex-extra: init (#1184)

plugins/default.nix

@@ -52,6 +52,7 @@
     ./languages/lean.nix
     ./languages/ledger.nix
     ./languages/lint.nix
+    ./languages/ltex-extra.nix
     ./languages/markdown-preview.nix
     ./languages/nix.nix
     ./languages/nvim-jdtls.nix

plugins/languages/ltex-extra.nix

@@ -0,0 +1,74 @@
+{
+  lib,
+  helpers,
+  config,
+  pkgs,
+  ...
+}:
+with lib;
+  helpers.neovim-plugin.mkNeovimPlugin config {
+    name = "ltex-extra";
+    originalName = "ltex_extra.nvim";
+    defaultPackage = pkgs.vimPlugins.ltex_extra-nvim;
+
+    maintainers = [maintainers.loicreynier];
+
+    callSetup = false;
+
+    settingsOptions = {
+      path = helpers.defaultNullOpts.mkStr "" ''
+        Path (relative to project root) to load external files from.
+
+        Commonly used values are:
+        - `.ltex`
+        - `.vscode` for compatibility with projects using the associated VS Code extension.
+      '';
+
+      init_check = helpers.defaultNullOpts.mkBool true ''
+        Whether to load dictionaries on startup.
+      '';
+
+      load_langs = helpers.defaultNullOpts.mkNullable (types.listOf types.str) ''["en-US"]'' ''
+        Languages for witch dicionnaries will be loaded.
+        See `plugins.lsp.servers.ltex.languages` for possible values.
+      '';
+
+      log_level = helpers.defaultNullOpts.mkStr "none" ''
+        Log level. Possible values:
+        - "none"
+        - "trace"
+        - "debug"
+        - "info"
+        - "warn"
+        - "error"
+        - "fatal"
+      '';
+    };
+
+    extraConfig = cfg: {
+      warnings = optional (!config.plugins.lsp.enable) ''
+        You have enabled `ltex-extra` but not the lsp (`plugins.lsp`).
+        You should set `plugins.lsp.enable = true` to make use of the LTeX_extra plugin's features.
+      '';
+
+      extraPlugins = [cfg.package];
+
+      plugins.lsp = {
+        servers.ltex = {
+          # Enable the ltex language server
+          enable = true;
+
+          onAttach.function = ''
+            require("ltex_extra").setup(${helpers.toLuaObject cfg.settings})
+          '';
+        };
+      };
+    };
+
+    settingsExample = {
+      path = ".ltex";
+      initCheck = true;
+      loadLangs = ["en-US" "fr-FR"];
+      logLevel = "non";
+    };
+  }