try to install on custom patchwork os

Hello
I'm trying to install the script on a custom os and i have to face with a weird error 


Traceback (most recent call last):
  File "./samplerbox.py", line 213, in <module>
    gv.setMC(gv.CHORDS,setChord)
AttributeError: 'module' object has no attribute 'setMC'


i tried many install of gv but i can't find out which one should work

thanks