gnome-panel binary package in Ubuntu Lunar riscv64

 GNOME Flashback continues the traditional desktop interface which was used
 in GNOME 2.x, but using modern GNOME technologies.
 .
 GNOME Panel is a part of the GNOME Flashback desktop, and provides panels
 and default applets for the desktop. A panel is a horizontal or vertical
 bar that can be added to a screen margin. It can contain various applets,
 such as the menu bar, application launch icons, the clock, volume controls,
 and displays for network connectivity, battery level, and other system
 monitors.

Source package