Traceback (most recent call last):
  File "/usr/bin/solfege", line 58, in <module>
    import solfege.startup
  File "/usr/share/solfege/solfege/startup.py", line 33, in <module>
    from solfege import application
  File "/usr/share/solfege/solfege/application.py", line 32, in <module>
    from solfege import mpd
  File "/usr/share/solfege/solfege/mpd/__init__.py", line 47, in <module>
    from solfege.mpd.rhythmwidget import RhythmWidget, RhythmWidgetController
  File "/usr/share/solfege/solfege/mpd/rhythmwidget.py", line 33, in <module>
    from solfege.mpd import engravers
  File "/usr/share/solfege/solfege/mpd/engravers.py", line 20, in <module>
    import cairo
ModuleNotFoundError: No module named 'cairo'