Development tools for Zephyr on STM32Workbench for Zephyr: VS Code extension to set up, build, flash and debug Zephyr applications on STM32.Devicetree manager: browse, edit and visualize Zephyr devicetree, STM32CubeMX-like for Zephyr.
All of those commands do not work and return with "Unsupported file..."
In fact gksu has been dropped from all Ubuntu packages since 18.
So now what?
the installer does not work in the newer distros.