On Fri, Feb 3, 2012 at 11:53 AM, Georg S. Weber <georgswe...@googlemail.com> wrote: > Hi, > > interesting. > I have the faint hope that the fix at > http://trac.sagemath.org/sage_trac/ticket/12161 > (which I hope to review this weekend --- it requires building twice a > Sage app on OS X 10.6, and then test these on OS X 10.7) will also > cure this. Even though this new report is on OS X 10.6! > > Reasoning: > The underlying problem fixed by the patch at #12161 was, that a system > python binary (/usr/bin/python) was called, instead of the python > binary that comes with Sage. According to some web quick searches, > "_PyUnicodeUCS4_AsUTF8String" is encountered when trying to import > Python extensions into Python binaries which are slightly incompatible > with each other (the difference being about the idea of how to > represent Unicode, as UCS2 or UCS4) ... > > The #12161 problem was so difficult to track because it hurts only on > systems that *never* had a Sage installed on it, more precisily that > are missing the ".sage" subdirectory under their user's home > directory. > > I remember that in the past, we had problems because nobody had tried > to test whether relocatability still works. I'm not quite sure how > many regular build/regression tests we currently run (except for mere > building and doctesting), and if some relocatability test is among > these (this just can't be "easily doctested" for obvious reasons). > Maybe it would be a good idea to also test Sage rc releases in > environments, where ".sage" has been removed (for each major platform) > --- there may be many other issues, with matplotlib, gap, and any of > the other components that write (or only look) under ".sage". (Testing > this also is pretty hard to do by the doctesing framework, I presume).
Very interesting!! In fact, every single case of this bug that I've seen (and there have been at least three) was on a system in which Sage had never successfully been run before, ever. This is, of course, exactly the sort of user that we do not want to alienate with our binaries. For all I know, that are hundreds of such people now who have hit this (I sure hope not, but I am not optimistic). -- William > > > Cheers, > Georg > > -- > To post to this group, send an email to sage-devel@googlegroups.com > To unsubscribe from this group, send an email to > sage-devel+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/sage-devel > URL: http://www.sagemath.org -- William Stein Professor of Mathematics University of Washington http://wstein.org -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
