no arrows shown with graphviz_draw
Hi,
I am currently using graph-tool 2.22-1 from the debian package provided for Ubuntu xenial: python3-graph-tool.
I am not able to visualize arrows when using graphviz_draw, the edges appear arrowless. You can replicate this problem with the following code:
from graph_tool.all import *
g=Graph();
v1=g.add_vertex();
v2=g.add_vertex();
g.add_edge(v1,v2);
graphviz_draw(g, eprops={'arrowsize':'2'});