> I think the one "new" point I'm making here is that `import sage` should *just work* without having to set any special environment variables :/
I very much agree On Tue, Nov 6, 2018 at 1:12 PM Erik Bray <erik.m.b...@gmail.com> wrote: > On Tue, Nov 6, 2018 at 1:00 PM Timo Kaufmann <eisfre...@gmail.com> wrote: > > > > I've had similar thoughts for a while. Replacing sage-env with a dumb > config file that can be parsed from within python would go a long way. I'm > not too familiar with the native sage-env however, it might do some clever > stuff that a dumb config file couldn't do. > > I'm not necessary suggesting a full replacement: Just a dumb config in > addition to it that can be used both from sage.env and perhaps > sage-env as well. I tossed about some ideas for this in > https://trac.sagemath.org/ticket/22652 and possibly elsewhere, but > never really made progress on it. I think the one "new" point I'm > making here is that `import sage` should *just work* without having to > set any special environment variables :/ > > > > Am Dienstag, 6. November 2018 11:10:52 UTC+1 schrieb Erik Bray: > >> > >> On Mon, Nov 5, 2018 at 8:11 AM Jori Mäntysalo <jori.ma...@uta.fi> > wrote: > >> > > >> > I am trying to marry SageMath and Jupyterhub. I think I got them > engaged, > >> > but the wedding night has a problem: > >> > > >> > Error: You must set the SAGE_ROOT environment variable or run this > >> > script from the SAGE_ROOT or SAGE_ROOT/local/bin/ directory. > >> > Error setting environment variables by sourcing > >> > '/home/jupkernelit/sage-8.4/local/bin/sage-env'; > >> > possibly contact sage-devel (see > >> > http://groups.google.com/group/sage-devel) > >> > > >> > First I think that I just set SAGE_ROOT in the command line before > >> > jupytehub-command, set it with export-command, or put it to > /etc/profile. > >> > They all failed, so jupyterhub seems to ignore environment. > >> > > >> > What next? > >> > >> Perhaps only loosely related, and not immediately helpful to your > >> problem, but something I've been thinking about for a while: I think > >> it's rather unfortunate that Sage-the-library (aka sagelib) requires > >> certain environment variables to be set in order to work at all. I > >> think sagelib--specifically the sage.env module--should try to > >> automatically set `SAGE_ROOT` and other variables that derive from it > >> if they aren't already set. > >> > >> Currently sagelib will just crash at import time with an unhelpful > >> traceback if at least SAGE_ROOT and SAGE_LOCAL are not set. Honestly, > >> in most cases, it can make some reasonable guesses about this. I also > >> thought we might be able to include an optional config file for many > >> of these variables which might be searched for in a few common > >> locations. The first place to look might be installed alongside the > >> sage package itself. System packagers could include their own copy of > >> this file in the package so that all the key variables (e.g. > >> SAGE_ROOT, SAGE_SRC, SAGE_DOC, etc.) are set appropriately for however > >> Sage is packaged on that system. IIRC Numpy does something a bit > >> similar, but for different reasons. > > > > -- > > 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 https://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 a topic in the > Google Groups "sage-devel" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/sage-devel/RuWNK52yGYg/unsubscribe. > To unsubscribe from this group and all its topics, 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 https://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 https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
