Added GNU parallel to genenetwork2

gn/packages/genenetwork.scm

@@ -25,6 +25,7 @@
   #:use-module (gnu packages databases)
   #:use-module (gnu packages ghostscript)
   #:use-module (gnu packages graphviz)
+  #:use-module (gnu packages parallel)
   #:use-module (gnu packages python)
   #:use-module (gnu packages python-check)
   #:use-module (gnu packages python-crypto)
@@ -485,6 +486,7 @@ Graphical Fragment Assembly} files and related formats.")
                                    (string=? "python" name))))
                            inputs)))
            ("genenetwork3" ,genenetwork3)
+           ("parallel" ,parallel) ;; GNU parallel
            ("python" ,python-wrapper)
            ("python-pillow" ,python-pillow)
            ("python-coverage" ,python-coverage)