This repository for CentOS-5 is provided as is...

copy the file aria.repo to /etc/yum.repos.d

yum --enablerepo=aria install python-ScientificPython python-matplotlib python-numeric python-numpy tkinter tix tcl tk

Also provided here:
ganglia, grace, nedit, openbabel, pymol, rddtool, rzip

known issue:
Wed Nov 28 18:45:09 MET 2007

1) pymol installation: missing Requires: tkinter (if installed alone)
-> yum install tkinter

Tru