The bsetroot command does not exist on my system. I have emerged both blackbox and commonbox but no sign of the command. The bsetroot command is used to set the background in the blackbox evironment. Reproducible: Didn't try Steps to Reproduce: 1. 2. 3.
Sorry. Some deps were broke for a bit but they've been taken care of. Re-merge commonbox-utils if you haven't already and bsetroot should be there.