GN dependency

gn/packages/bioinformatics.scm

@@ -244,6 +244,7 @@ confidence region for the location of a putative QTL.")
               ("python2-numarray" ,python2-numarray)
               ("python2-numpy" ,python2-numpy)
               ("python2-pandas" ,python2-pandas)
+              ("python2-parallel" ,python2-parallel)
               ("python2-passlib" ,python2-passlib)
               ("python2-piddle" ,python2-piddle)
               ("python2-redis" ,python2-redis)