qt5-style-platform-gtk2 5.0.0+git23.g335dbec-2ubuntu5 (s390x binary) in ubuntu eoan

 Qt is a cross-platform C++ application framework. Qt's primary feature
 is its rich set of widgets that provide standard GUI functionality.
 .
 This package contains the GTK 2 Platform Theme. Export
 QT_QPA_PLATFORMTHEME=gtk2 to enable it for all Qt applications.