Dear list, I'm trying to debug this issue https://gitlab.com/lilypond/lilypond/-/issues/6518 and I'm having trouble with what's probably the most basic thing but I can't seem to figure it out. I can't convert musicxml files with a self-compiled Lilypond other than inside of Frescobaldi. The problem with Frescobaldi is that if everything goes well, the window with the python output goes away but I would like to see the printed messages (that I'm printing from musicexp.py, which I know they're being printed from the times where musicxml2ly fails and I can see them in the python log, because Frescobaldi doesn't close the MusicXML import window in those circumstances). If I run the script from build/out/bin/musicxml2ly (in the terminal instead of Frescobaldi) it doesn't seem to run the version of musicxml2ly that is in lilypond/python or it's running some other copy of musicexp.py.
—Martín. -- www.martinrinconbotero.com