String ubuntuSourcesListTemplate(String ubuntuMirrorUrl) {
  return '''
# Generate by yoyo-getfastmirror
# Author: Github/Riceneeder

deb $ubuntuMirrorUrl jammy main restricted universe multiverse
deb $ubuntuMirrorUrl jammy-updates main restricted universe multiverse
deb $ubuntuMirrorUrl jammy-backports main restricted universe multiverse
deb $ubuntuMirrorUrl jammy-security main restricted universe multiverse
''';
}
