Hi Nathann, actually, the issue is a licensing one. pip needs some SSL to fetch sources with https, so if Sage is built sith SSL support you won't have any problem. If openssl was a standard package, you will not have any problem either. Unfortunately, openssl is licensed in a way that it can not be a standard package.
This is a known issue that has been discussed here: http://trac.sagemath.org/ticket/17368 A short term workaround could be to catch the error and print the procedure Vincent suggested, with an alternative: 1alt) run "sage -i openssl" Actually, the use of libssl-dev is already explained in http://sagemath.org/doc/installation/source.html, however it is somehow hidden in notebook-specific section. Another short term workaround could be to refactor this, i just opened a ticket for that: http://trac.sagemath.org/ticket/17690 A longer term possibility could be to ship e.g. gnutls or nss (which are LGPL, MozillaPL) as a standard package and try to build python/pip with it (not sure it is doable). Ciao, Thierry On Thu, Jan 29, 2015 at 10:12:33AM +0100, Nathann Cohen wrote: > Hello everybody, > > I tried yesterday to install a Python package with 'pip', and ran into the > following problem (full taceback at the end): > > ~$ sage -pip install line-profiler > ... > ImportError: cannot import name HTTPSHandler > > Vincent sent me this link [1], and suggested the following procedure: > > 1) Install libssl-dev > 2) run "sage -f python" > 3) run "make", which recompiled most of Sage > > This worked out perfectly. > > Do you think that there is something to do about this "in Sage"? Some doc > to write somewhere, some dependency to add? Or do we consider this to be an > unrelated python problem? > > Byeeeeeeeeeeeee, > > Nathann > > [1] > http://stackoverflow.com/questions/20688034/python-importerror-cannot-import-name-httpshandler > > Traceback (most recent call last): > File "/home/ncohen/.Sage/local/bin/pip", line 9, in <module> > load_entry_point('pip==1.5.6', 'console_scripts', 'pip')() > File "build/bdist.linux-x86_64/egg/pkg_resources.py", line 356, in > load_entry_point > File "build/bdist.linux-x86_64/egg/pkg_resources.py", line 2419, in > load_entry_point > File "build/bdist.linux-x86_64/egg/pkg_resources.py", line 2135, in load > File > "/home/ncohen/.Sage/local/lib/python2.7/site-packages/pip-1.5.6-py2.7.egg/pip/__init__.py", > line 10, in <module> > from pip.util import get_installed_distributions, get_prog > File > "/home/ncohen/.Sage/local/lib/python2.7/site-packages/pip-1.5.6-py2.7.egg/pip/util.py", > line 18, in <module> > from pip._vendor.distlib import version > File > "/home/ncohen/.Sage/local/lib/python2.7/site-packages/pip-1.5.6-py2.7.egg/pip/_vendor/distlib/version.py", > line 14, in <module> > from .compat import string_types > File > "/home/ncohen/.Sage/local/lib/python2.7/site-packages/pip-1.5.6-py2.7.egg/pip/_vendor/distlib/compat.py", > line 31, in <module> > from urllib2 import (Request, urlopen, URLError, HTTPError, > ImportError: cannot import name HTTPSHandler > > -- > You received this message because you are subscribed to the Google Groups > "sage-devel" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-devel+unsubscr...@googlegroups.com. > To post to this group, send email to sage-devel@googlegroups.com. > Visit this group at http://groups.google.com/group/sage-devel. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
