plugins/bufferline: resolve diagnosticsUpdateInInsert deprecation

Author: khaneliman

plugins/bufferlines/bufferline.nix

@@ -5,7 +5,6 @@
   ...
 }:
 let
-  inherit (lib) mkEnableOption genAttrs;
   inherit (lib.nixvim) defaultNullOpts nixvimTypes;
   types = nixvimTypes;
 
@@ -121,7 +120,6 @@ lib.nixvim.neovim-plugin.mkNeovimPlugin config {
         "sortBy"
         "diagnostics"
         "diagnosticsIndicator"
-        "diagnosticsUpdateInInsert"
         "offsets"
         [
           "groups"
@@ -411,7 +409,7 @@ lib.nixvim.neovim-plugin.mkNeovimPlugin config {
       };
 
       hover = {
-        enabled = mkEnableOption "hover";
+        enabled = lib.mkEnableOption "hover";
 
         reveal = defaultNullOpts.mkListOf types.str [ ] "reveal";
 
@@ -433,14 +431,26 @@ lib.nixvim.neovim-plugin.mkNeovimPlugin config {
           optionSnakeCase
         ) (oldHighlightOptions ++ [ "truncMarker" ]);
       in
-      genAttrs newHighlightsOptions (
+      lib.genAttrs newHighlightsOptions (
         name:
         defaultNullOpts.mkHighlight { } null ''
           Highlight group definition for ${name}.
         ''
       );
   };
 
+  extraOptions = {
+    diagnosticsUpdateInInsert = lib.mkOption {
+      type = types.bool;
+      default = false;
+      description = ''
+        Whether to enable diagnostics update in insert mode.
+
+        Only applies when `coc` is selected in option `plugins.settings.options.diagnostic`.
+      '';
+    };
+  };
+
   settingsExample = {
     options = {
       mode = "buffers";
@@ -583,6 +593,12 @@ lib.nixvim.neovim-plugin.mkNeovimPlugin config {
   };
 
   extraConfig = cfg: {
+    extraConfigLua =
+      lib.mkIf cfg.diagnosticsUpdateInInsert # Lua
+        ''
+          vim.diagnostic.config { update_in_insert = true }
+        '';
+
     extraPlugins = with pkgs.vimPlugins; [
       cfg.package
       nvim-web-devicons

tests/test-sources/plugins/bufferlines/bufferline.nix

@@ -51,6 +51,8 @@
   defaults = {
     plugins.bufferline = {
       enable = true;
+      diagnosticsUpdateInInsert = true;
+
       settings = {
         options = {
           mode = "buffers";