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Support DeviceHub.app location in Xcode 27 #3013

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30 changes: 26 additions & 4 deletions apple/internal/templates/apple_simulator.template.py
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Original file line number Diff line number Diff line change
Expand Up @@ -452,7 +452,7 @@ def wait_for_sim_to_boot(simctl_path: str, udid: str) -> bool:
def boot_simulator(*, developer_path: str, simctl_path: str, udid: str) -> None:
"""Launches the Apple simulator for the given identifier.

Ensures the Simulator process is in the foreground.
Launches the simulator GUI when available.

Args:
developer_path: The path to /Applications/Xcode.app/Contents/Developer.
Expand All @@ -472,11 +472,33 @@ def boot_simulator(*, developer_path: str, simctl_path: str, udid: str) -> None:
# This is likely because the newly-spawned Simulator.app process
# hasn't had time to connect to the Apple Events system which
# `osascript` relies on.
simulator_path = os.path.join(developer_path, "Applications/Simulator.app")
subprocess.run(
["open", "-a", simulator_path, "--args", "-CurrentDeviceUDID", udid],
check=True,
[simctl_path, "boot", udid],
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL,
check=False,
)

# Simulator.app was replaced by DeviceHub.app in Xcode 27. This is a
# non-critical step that serves only to launch the simulator GUI, so simply
# checking path existence is good enough.
legacy_simulator = os.path.join(developer_path, "Applications", "Simulator.app")
device_hub = os.path.join(
developer_path, os.pardir, "Applications", "DeviceHub.app"
)
if os.path.exists(legacy_simulator):
subprocess.run(
["open", "-a", legacy_simulator, "--args", "-CurrentDeviceUDID", udid],
check=False,
)
elif os.path.exists(device_hub):
subprocess.run(["open", "-a", device_hub], check=False)
else:
logger.warning(
"No simulator GUI app found under %s; the device is booted but no "
"window will be shown.",
developer_path,
)
logger.debug("Simulator launched.")
if not wait_for_sim_to_boot(simctl_path, udid):
raise Exception("Failed to launch simulator with UDID: " + udid)
Expand Down