Fix Metal toolchains in Xcode 26 betas #3213
Merged
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Fixes:
Apparently
$toolchaineither was never set for Metal toolchains in earlier Xcode versions or Xcode didn't complain when it was set inaction_env. I tested on Xcode 16 and it was never there while it definitely shows up in Xcode 26 Beta 3.I think version check may not be needed here at all. If yes, please do let me know what would be suggested way of performing the check. I tried calling
xcodebuild -versionbut that seem to randomly fail for some people so I removed it.