First, by way of background. I'm trying to set this up on a Mac after having used it for awhile on Linux. I use MacPorts, but found it would not install (Error: Failed to fetch plantuml). Rather than fuss with that, I downloaded the latest copy of PlantUML and used MacPorts to install Graphviz.
My base for MacPorts is /opt/local/ so the dot path is /opt/local/bin/dot.
Is there a way to change the location where PlantUML is looking for the binary dot?