fix description and remove node2nix and pnpm

Author: fidgetingbits

flake.nix

@@ -1,5 +1,5 @@
 {
-  description = "A Nix-flake-based Node.js development environment";
+  description = "A Nix-flake-based development environment for vscode-parse-tree";
 
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
 
@@ -8,7 +8,6 @@
       overlays = [
         (final: prev: rec {
           nodejs = prev.nodejs-18_x;
-          pnpm = prev.nodePackages.pnpm;
           yarn = (prev.yarn.override { inherit nodejs; });
         })
       ];
@@ -22,7 +21,7 @@
         ({ pkgs }: {
           default = pkgs.mkShell
             {
-              packages = with pkgs; [ node2nix nodejs pnpm yarn emscripten python310 steam-run vsce ];
+              packages = with pkgs; [ nodejs yarn emscripten python310 steam-run vsce ];
               shellHook = ''
                 if [ ! -d $(pwd)/.emscripten_cache ]; then
                   cp -R ${pkgs.emscripten}/share/emscripten/cache/ $(pwd)/.emscripten_cache