I wanted to build multiple configurations at once with the command
./simfactory/sim build sim-debug sim
sim-debug is a debug configuration, sim is optimised. SimFactory built sim-debug, then aborted with the error:
optionlist is: /Users/eschnett/EinsteinToolkit-hg/configs/sim/OptionList Error: pattern '^\sDEBUG\s=.*$' exists already
It assumes that SimFactory doesn't properly distinguish between the different build options of the different configurations.