update flake, nvidia and make otter work

home-manager/nixvim/lsp.nix

@@ -1,6 +1,10 @@
 {pkgs, ...}:
 {
   plugins = {
+    otter = { # provide lsp functionality for code embedded in other languages
+      enable = true;
+      settings.handle_leading_whitespace = true;
+    };
     lsp = {
       enable = true;
       servers = {

home-manager/nixvim/treesitter.nix

@@ -4,6 +4,8 @@
       enable = true;
       nixGrammars = true;
       indent = true;
+
+      settings.highlight.enable = true;
     };
     #treesitter-context.enable = true;
     rainbow-delimiters.enable = true;