I had the same experience using altool to validate an .ipa as part of our CI/CD process (xcrun altool --validate-app), it started failing with the same " AttributeError: 'BuildEnvironment' object has no attribute 'sdk'" errors. Just for debug purposes, it actually runs successfully if the .ipa is valid, but crashes if the .ipa is not valid, instead of returning a real validation error. Upgrading to Xcode 14 does fix the issue.
LizCira
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