RooSimultaneous template fit

Hello @jaromrax,

we support neither external github projects nor rootpy. I invite you to try
https://root.cern.ch/doc/master/rf501__simultaneouspdf_8py.html

with pyroot. Please note the difference between pyroot (officially supported) and rootpy (not supported).

If you run into problems with pyroot, let us know, but let’s not discuss in old posts.