I may try to switch to cura, but it turns out that RepetierHost
(even though it isn't in the repos) still accepts the definition
of my old solidoodle2 printer laying around in the mono repos
all this time, so I was able to use RepetierHost right away,
and printed this masterpiece last night:
https://tomhorsley.com/hardware/solidoodle/solidoodle-unicorn.html