We should probably re-add the platform27 zip, as some apps are failing to build due to that. (it can be fixed by calling sdkmanager in prebuilt for now.) For soem reason this get;s installed automatically for some apps but not for others. Context: https://gitlab.com/fdroid/fdroidserver/merge_requests/401 We need to check if google now actually decided on _one_ version to be the correct one...