title: python + igraph "plotting not available"
body: <p>I installed python-igraph 0.5.4 and igraph 0.5.4 (also tested 0.6) from source on a RHEL machine. All is fine except when I try to plot I get.</p>
  
  <p>"TypeError: plotting not available"</p>
  
  <p>There were no errors or warnings in the configure or install stages. </p>
  
  <p>What do I need to install on linux to get plotting to work?  I don't have root so will need to install it from source. </p>