add

nvim/lua/plugins/treesitter.lua

@@ -0,0 +1,29 @@
+return {
+  { "nvim-treesitter/nvim-treesitter",
+    branch = 'master',
+    lazy = false,
+    build = ":TSUpdate",
+    config = function()
+      require'nvim-treesitter.configs'.setup({
+        ensure_installed = {
+          "nix",
+          "yuck",
+          "css",
+          "scss",
+          "javascript",
+          "go",
+          "json",
+          "lua",
+          "c",
+          "cpp",
+        },
+        auto_install = true,
+        ignore_install = {},
+        hightlight = {
+          enable = true,
+          disable = {},
+        },
+      })
+    end
+  }
+}