helix: wrapped helix, added helix cachix

parts/pkgs/extraPackages/helix-wrapped.nix

@@ -0,0 +1,35 @@
+{
+  inputs',
+  inputs,
+  lib,
+  pkgs,
+  ...
+}: let
+  helix-wrapped = inputs.wrapper-manager.lib.build {
+    inherit pkgs;
+    modules = [
+      {
+        wrappers.nushell-wrapped = {
+          basePackage = inputs'.helix.packages.default;
+          pathAdd = with pkgs; [
+            # C/C++
+            clang-tools
+
+            # Markdown
+            marksman
+
+            # Nix
+            nil
+
+            # Bash
+            bash-language-server
+
+            # Shell
+            shellcheck
+          ];
+        };
+      }
+    ];
+  };
+in
+  helix-wrapped