helper keeps failing in flyenv 4.20 after macos 27, Terminal exited with code 5

[Quaint Quail]

Not sold on the xattr fix being the full answer here.

Helper program installation failed.: Error: Terminal exited with code 5

Theory going round is the FlyEnv helper installer copies com.apple.quarantine onto the LaunchDaemon plist, so launchctl won't bootstrap it. Stripping it with sudo xattr works for some, but one report says the popup still shows on 4.20 after that.

4.20.1 is meant to sort it. Meant to.