Silent Ubuntu Build Failure

[greynewell]

Looks like the Ubuntu runner is failing silently while showing a green checkmark:

/home/runner/work/musegpt/musegpt/JUCE/modules/juce_gui_basics/juce_gui_basics.h:361:13:
  fatal error: X11/extensions/Xrandr.h: No such file or directory

    361 |    #include <X11/extensions/Xrandr.h>
        |             ^~~~~~~~~~~~~~~~~~~~~~~~~

  compilation terminated.

  gmake[2]: ***
  [extras/Build/juceaide/CMakeFiles/juceaide.dir/build.make:104:
  extras/Build/juceaide/CMakeFiles/juceaide.dir/__/__/__/modules/juce_gui_basics/juce_gui_basics.cpp.o]
  Error 1

  gmake[1]: *** [CMakeFiles/Makefile2:131:
  extras/Build/juceaide/CMakeFiles/juceaide.dir/all] Error 2

  gmake: *** [Makefile:136: all] Error 2



-- Configuring incomplete, errors occurred!
gmake: Makefile: No such file or directory
gmake: *** No rule to make target 'Makefile'.  Stop.

There are two subissues that need to be addressed here:

• How to make the build runner fail when the build fails (???)
• Fix the failure (sudo apt install xorg-dev?)