• using R version 2.10.1 Patched (2010-01-28 r51076)
• using session charset: ASCII
• checking for file 'pcalg/DESCRIPTION' ... OK
• this is package 'pcalg' version '0.1-9'
• checking package name space information ... OK
• checking package dependencies ... ERROR
  Packages required but not available:
  Rgraphviz
  
  See the information on DESCRIPTION files in the chapter 'Creating R
  packages' of the 'Writing R Extensions' manual.
• elapsed time (check, wall clock): 0:02