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Hello Jacek, I see at least 3 solutions : 1. re-building python : it's a bit awkward because eups already needs python and this implies python is already installed on the environnement before installing eups. Furthermore, if eups install a python version it is not compatible with, it will nevertheless swith to use it (instead of system python) and then fails. 2. use systemp python : there's example file in HSC build script. The problem with this solution is that the install tool may have to manage conflict between system python libs and eups-installed python libs. 3. use virtualenv : i think it's a good solution, but eups can't do this at the moment. Maybe it would be a good idea to make eups always run with system python, indeed it would solve point 1. and 3. I can test quickly if it work by updating eups source (in peculiar eups executable which invoke python), and them put a ticket so that eups install tools take in account this improvment. If this solution is too complicated, i will then try point 2. Do you think this proposal is reasonable ? Have a nice day, Fabrice On 12/13/2013 06:33 PM, Jacek Becla wrote: > Fabrice > > Why do we want to / have to use virtualenv? Can we not > rely on eups and do all the things that we wanted to > do via virtualenv inside eups? > > Thanks, > Jacek > > > > On 12/13/2013 09:17 AM, Fabrice Jammes wrote: >> >> For information, a reply from Jim Bosch about eups and virtualenv. It >> seems that mixing this two software may be quite difficult ... >> >> >> >> -------- Original Message -------- >> Subject: [HSC Forum] "Installing virtualenv with eups" >> Date: Fri, 13 Dec 2013 17:09:45 -0000 >> From: [log in to unmask] >> Reply-To: [log in to unmask] >> To: [log in to unmask] >> >> >> >> >> >> jbosch <http://hsca.ipmu.jp:8080/users/11/jbosch/> posted a comment >> <http://hsca.ipmu.jp:8080/question/167/installing-virtualenv-with-eups/?comment=169#comment-169> >> >> >> >> Commented by jbosch: >> >> I think I agree with your statement about what eups' behavior should be, >> but I'm afraid I'm not enough of a eups expert to be able to make that >> change myself (or even understand all its ramifications). I'm somewhat >> concerned about the idea of trying to use virtualenv with eups, though, >> as I think they're likely to conflict in more ways than this. As I >> understand it, both of them want to take control over your environment >> and determine which versions of other packages will be used, and I'm >> concerned that makes them fundamentally incompatible. >> >> In reply to fjammes's question: Installing virtualenv with eups >> >> Hello, >> >> I need to install virtualenv with eups but i run in a tricky problem : >> >> |[eups@clrlsst-dbmaster-vm eups]$ /usr/bin/python -S -c "import >> traceback" >> [eups@clrlsst-dbmaster-vm eups]$ >> /opt/lsst/Linux64/python/virtualenv/bin/python -S -c "import traceback" >> Traceback (most recent call last): >> File "<string>", line 1, in <module> >> ImportError: No module named traceback >> | >> >> So, it seems virtualenv doesn't import all python standard library. >> >> The problems is that after having installed virtualenv, eups use >> opt/lsst/Linux64/python/virtualenv/bin/python and return next error >> message : >> >> |[eups@clrlsst-dbmaster-vm eups]$ eups >> Traceback (most recent call last): >> File "/opt/lsst/eups/bin/eups_impl.py", line 26, in <module> >> import eups.cmd >> File "/opt/lsst/eups/python/eups/__init__.py", line 1, in <module> >> from exceptions import * >> File "/opt/lsst/eups/python/eups/exceptions.py", line 5, in <module> >> import sys, traceback >> ImportError: No module named traceback >> | >> >> So, my build scripts, or setup/unsetup commands doesn't work anymore. >> >> Is there a way to force eups to always use a fixed python version ? >> >> Thanks, >> >> Fabrice >> >> To change freqency and content of these alerts, please visit your user >> profile <http://hsca.ipmu.jp:8080/users/38/fjammes/subscriptions/>. >> >> If you believe that this message was sent in an error, please email >> about it the forum administrator at [log in to unmask] >> >> ------------------------------------------------------------------------ >> >> Sincerely, >> Administrator >> >> >> >> >> >> ------------------------------------------------------------------------ >> >> 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 >> > > ######################################################################## > 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 ######################################################################## 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