We are upgrading to Xcode 26.0.1 (Build 17A400). While Xcode itself installs correctly, tests running on Mac_arm64 bots are failing because the iOS 26.0 simulator runtime is not available.
The create_simulator step (or flutter build) fails with:
[Error (Xcode): iOS 26.0 Platform Not Installed ](Mac_x64 plugin_lint_mac)
Xcode Version: 26.0.1 (17A400)
Target: iOS 26.0 Simulator
Unlike the Intel bots (where iOS 26 is unsupported - #170294), these ARM bots can run the simulator, but the runtime component appears to be missing from the environment.
proposed fixes:
Fallback: Update create_simulator.sh to handle the specific runtime identifier for Xcode 26 if it differs from the default expectation (e.g., ensuring it falls back to the bundled iOS 26.0 release).
We are upgrading to Xcode 26.0.1 (Build 17A400). While Xcode itself installs correctly, tests running on Mac_arm64 bots are failing because the iOS 26.0 simulator runtime is not available.
The create_simulator step (or flutter build) fails with:
[
Error (Xcode): iOS 26.0 Platform Not Installed](Mac_x64 plugin_lint_mac)Xcode Version: 26.0.1 (17A400)
Target: iOS 26.0 Simulator
Unlike the Intel bots (where iOS 26 is unsupported - #170294), these ARM bots can run the simulator, but the runtime component appears to be missing from the environment.
proposed fixes:
Fallback: Update create_simulator.sh to handle the specific runtime identifier for Xcode 26 if it differs from the default expectation (e.g., ensuring it falls back to the bundled iOS 26.0 release).