shell.nix: Emulator for Android 15

shell.nix

@@ -11,8 +11,37 @@ let
     buildToolsVersions = [ build_tools_version ];
     platformVersions = [ "34" ];
     abiVersions = [ "armeabi-v7a" ];
+    inherit repoJson;
   };
 
+  # Ensure we have the needed system images
+  repoJson = pkgs.fetchurl {
+    url =
+      "https://raw.githubusercontent.com/NixOS/nixpkgs/ebc7402410a3ce2d25622137c190d4ab83945c10/pkgs/development/mobile/androidenv/repo.json";
+    hash = "sha256-4/0FMyxM+7d66qfhlY3A10RIe6j6VrW8DIilH2eQyzc=";
+  };
+
+  emulators = let
+    mk_emulator = { platformVersion, device ? "pixel_6" }:
+      pkgs.androidenv.emulateApp rec {
+        name = "emulator_api${platformVersion}";
+        inherit platformVersion;
+        abiVersion = "x86_64";
+        androidAvdFlags = "--device ${device}";
+        # There's no 'default' image for Android 15
+        systemImageType = "google_apis";
+        sdkExtraArgs = { inherit repoJson; };
+      };
+    # Allow to install several emulators in the same environment
+    link_emulator = version_name: args: {
+      name = "bin/emulate_android_${version_name}";
+      path = "${mk_emulator args}/bin/run-test-emulator";
+    };
+  in pkgs.linkFarm "emulator" [
+    (link_emulator "14" { platformVersion = "34"; })
+    (link_emulator "15" { platformVersion = "35"; })
+  ];
+
   ANDROID_SDK_ROOT = "${android.androidsdk}/libexec/android-sdk";
 
   gradle = pkgs.gradle.override { java = jdk; };
@@ -27,8 +56,14 @@ let
   '';
 
 in pkgs.mkShell {
-  buildInputs =
+  buildInputs = [
-    [ pkgs.findutils pkgs.fontforge jdk android.androidsdk gradle_wrapped ];
+    pkgs.findutils
+    pkgs.fontforge
+    jdk
+    android.androidsdk
+    gradle_wrapped
+    emulators
+  ];
   JAVA_HOME = jdk.home;
   inherit ANDROID_SDK_ROOT;
 }