I tried to use musicxml2ly from official repository of manjaro linux and get this output:
Traceback (most recent call last):
File "/usr/bin/musicxml2ly", line 44, in <module>
import lilylib as ly
ImportError: No module named lilylib
Then I tried to install lilypond from official cite via shell script. It gives following output:
File "./lilypond/usr/bin/musicxml2ly", line 2264
if current_staff and staff <> current_staff and not n.get_maybe_exist_named_child('chord'):
^
SyntaxError: invalid syntax