fix flutter flake

Shells/flutter/flake.nix

@@ -3,8 +3,12 @@ description = "Flutter 3.13.x";
 inputs = {
   nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
   flake-utils.url = "github:numtide/flake-utils";
+
+   android-nixpkgs = {
+      url = "github:tadfisher/android-nixpkgs";
+   };
 };
-outputs = { self, nixpkgs, flake-utils }:
+outputs = { self, nixpkgs, flake-utils, android-nixpkgs }:
   flake-utils.lib.eachDefaultSystem (system:
     let
       pkgs = import nixpkgs {
@@ -14,30 +18,50 @@ outputs = { self, nixpkgs, flake-utils }:
           allowUnfree = true;
         };
       };
-      buildToolsVersion = "30.0.3";
       androidComposition = pkgs.androidenv.composeAndroidPackages {
-        buildToolsVersions = [ buildToolsVersion "33.0.1" ];
-        platformVersions = [ "34" "28" ];
+        buildToolsVersions = [ "30.0.3" "34.0.0" "33.0.1"];
+        platformVersions = [ "35" "34" "33" "28" ];
         abiVersions = [ "armeabi-v7a" "arm64-v8a" ];
       };
+      androidCustomPackage = android-nixpkgs.sdk.${system} (
+        sdkPkgs: with sdkPkgs; [
+          build-tools-30.0.3
+          build-tools-34.0.0
+        ]
+      );
       androidSdk = androidComposition.androidsdk;
     in
     {
       devShell =
         with pkgs; mkShell rec {
           shellHook = ''
-            zsh
+            nu
             exit
           '';
-          GRADLE_OPTS = "-Dorg.gradle.project.android.aapt2FromMavenOverride=${androidSdk}/libexec/android-sdk/build-tools/33.0.1/aapt2";   
+          GRADLE_OPTS = "-Dorg.gradle.project.android.aapt2FromMavenOverride=${androidSdk}/libexec/android-sdk/build-tools/34.0.0/aapt2";   
 
           ANDROID_SDK_ROOT = "${androidSdk}/libexec/android-sdk";
           buildInputs = [
             flutter
             androidSdk # The customized SDK that we've made above
-            jdk17
-            hover
-            go
+#            jdk17
+            jdk21
+
+            (vscode-with-extensions.override {
+              vscode = vscodium;
+              vscodeExtensions = with vscode-extensions; [
+                vscodevim.vim
+                dart-code.dart-code
+                dart-code.flutter
+              ] ++ pkgs.vscode-utils.extensionsFromVscodeMarketplace[
+                {
+                  name = "awesome-flutter-snippets";
+                  publisher = "nash";
+                  version = "4.0.1";
+                  sha256 = "lXdos/xB18h3Z0YfkgEk55G2JvRMYudUUIltugQjylU=";
+                }
+              ];
+            })
           ];
 
         };