This is still an issue a year later, can we get an update on this?

After working on this further, I've concluded it's impossible to use Xcode cloud for this purpose currently, unless I'm missing something. I'm actually unsure what the Notarize post-action is intended for, as there's no way to automate getting that notarized binary out of Xcode Cloud making it useless in a CI environment. One possible workaround I tried was to remove the notarize post-action step and instead do notarization and stapling myself as part of a ci_post_xcodebuild script, however then the signing step will not produce a developer-id signed archive, it's just missing.

@eskimo Still broken for macOS apps as of 15.4