I have a triple-booter - Win7; Arch; Void and Void has GRUB installed to 
control the booting.

With os-prober at 1.70_1 if I run "xbps-reconfigure -f linux4.1" I only get 
Void in the GRUB menu.

If I downgrade to 1.67_1 I get all three as expected. 

Not sure if this is a config issue somewhere (although I'm pretty vanilla 
locally) or an os-prober issue upstream.

I'm not mounting Win7 or Arch in Void if that makes a difference.