tabline/bufferline: add highlights

modules/plugins/tabline/nvim-bufferline/config.nix

@@ -40,7 +40,7 @@ in {
       };
 
       luaConfigRC.nvimBufferline = entryAnywhere ''
-        require("bufferline").setup({options = ${toLuaObject cfg.setupOpts}})
+        require("bufferline").setup(${toLuaObject cfg.setupOpts})
       '';
     };
   };

modules/plugins/tabline/nvim-bufferline/nvim-bufferline.nix

@@ -21,6 +21,17 @@ in {
     };
 
     setupOpts = mkPluginSetupOption "Bufferline-nvim" {
+      highlights = mkOption {
+        type = either attrs luaInline;
+        default = null;
+        description = ''
+          Overrides the highlight groups of bufferline.
+
+          See `:help bufferline-highlights`.
+        '';
+      };
+
+      options = {
         mode = mkOption {
           type = enum ["tabs" "buffers"];
           default = "buffers";
@@ -388,4 +399,5 @@ in {
         };
       };
     };
+  };
 }