python-diagnostic-msgs binary package in Ubuntu Bionic arm64

 This package is part of Robot OS (ROS), and contains the messages
 which provide the standardized interface for the diagnostic and
 runtime monitoring systems in ROS. These messages are currently used
 by the <http://wiki.ros.org/diagnostics> stack, which provides
 libraries for simple ways to set and access the messages, as well as
 automated ways to process the diagnostic data.
 .
 This package contains the generated Python package.

Source package