In instructions to Google, Judge Rossignoli says that the company must “adopt the necessary technical means to immediately uninstall from Android systems that report IP addresses in the territory of the Argentine Republic (which can be verified by the IP addresses assigned to this country), the application named Magis TV.”
"What was achieved is an unprecedented court order, which is in the process of being analyzed by Google – we understand that they cannot deny it – which is to uninstall, through the Android operating system update, the application on all devices that have an IP address in Argentina,” [prosecuter Alejandro] Musso says.
It’s not separate builds, but the App Store already checks your location when you access it, and it uses that location data along with other hints you are under EU jurisdiction to decide whether to allow you to sideload or not.
Or you can use the developer tools to perform a more limited form of sideloading in any country.