Scale by zero for random graph

[GregorySchwartz]

Running this code through diagram-builder gives

diagrams-builder-cairo: scale by zero!  Halp!
CallStack (from HasCallStack):
  error, called at src/Diagrams/Core/Transform.hs:425:11 in diagrams-core-1.4.1.1-K28WMLqu11XFyUMvGB0HVd:Diagrams.Core.Transform

Random graph from graph-generators.

import Diagrams.TwoD.GraphViz
import Data.Graph.Generators.Random.BarabasiAlbert
import Data.Graph.Generators.FGL
import Data.GraphViz
import Data.GraphViz.Commands

g = barabasiAlbertGraph' 10 2

dia = g >>= (simpleGraphDiagram Neato . graphInfoToUGr)

[santolucito]

I ran into a similar error. This might be due to a lack of support for self-loops, as mentioned in issue #8

[L0neGamer]

I ran into this issue earlier with graphs that have self loops.