merge treesitter into app.nix

I'm uncertain if I moved the plugins over (I think they are all enabled
by default)

hmModules/apps/neovim/app.nix

@@ -28,8 +28,6 @@
     };
   };
 
-  #   ./plugin/treesitter.nix
-
   config = lib.mkIf config.neovim.enable {
     home.sessionVariables = {
       EDITOR = "nvim";
@@ -136,7 +134,12 @@
         };
       };
 
-      treesitter.enable = treesiter.enable;
+      treesitter = {
+        enable = treesiter.enable;
+        highlight.enable = true;
+        indent.enable = true;
+        folding.enable = true;
+      };
 
       vimwiki = {
         enable = wiki.enable;

hmModules/apps/neovim/plugin/treesitter.nix

@@ -1,38 +0,0 @@
-{ config, pkgs, lib, ... }:
-
-let
-  cfgp = config.neovim.plugins;
-  cfgl = config.neovim.languages;
-in {
-  config = lib.mkIf (config.neovim.enable && cfgp.treesitter.enable)  {
-    programs.neovim.plugins = let
-      configText = ''
-        require('nvim-treesitter.configs').setup {
-          ensure_installed = {},
-
-          auto_install = false,
-
-          highlight = { enable = true },
-
-          indent = { enable = true },
-        }
-      '';
-
-      # I've tried many things, and can't get treesitter plugins changing
-      # dynamically. For not just have them always loaded regardless of config
-      treeplugs = p: [
-        p.tree-sitter-c
-        p.tree-sitter-go
-        p.tree-sitter-nix
-        p.tree-sitter-rust
-        p.tree-sitter-typescript
-      ];
-    in with pkgs.vimPlugins; [
-      {
-        plugin = (nvim-treesitter.withPlugins treeplugs);
-        type = "lua";
-        config = configText;
-      }
-    ];
-  };
-}