Hello, The virtualenv problem seems to be a blocker. For example, Serge proposal for virtualenv doesn't seem to work : [eups@clrlsst-dbmaster-vm eups]$ virtualenv --system-site-packages /tmp/ New python executable in /tmp/bin/python Installing setuptools.............done. Installing pip...............done. [eups@clrlsst-dbmaster-vm eups]$ /tmp/bin/python*-S* Python 2.6.6 (r266:84292, Nov 21 2013, 12:39:37) [GCC 4.4.7 20120313 (Red Hat 4.4.7-3)] on linux2 >>> import traceback Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: No module named traceback >>> The problem is that virtualenv seems to create a reduced standard library, smaller than the system python one. That's why I think that eups should always use system python, in order not to produce conflict with eups-installed python (for example if i install python3 with eups, but eups is only compatible with python2 eups would also break). I posted a question on the HSC wiki, used by LSST : http://hsca.ipmu.jp:8080/question/167/installing-virtualenv-with-eups/ Hope it will help, Have a nice week end, Fabrice ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the QSERV-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=QSERV-L&A=1