On 8/20/10 2:44 PM, Ryan Hinton wrote:
I have a build of Sage at school that I occasionally update when a bug
or upgrade affects me. I'm the only one who uses it, but it's
installed in a public location (i.e. not writable by me) in case
someone else *might* use it. And because I don't have enough disk
space in my personal quota. :-)
So I went through the motions again: download, build, test, notify the
sysadmin that a new build is ready to be copied over. But this time
we're having trouble with Sage fixing the install paths. There are
multiple levels of symbolic links in the path, and some components
(e.g. Zope) are picking up the absolute path (w/o symlinks), while
others are picking up the cd'ed path where "./sage" is being run (w/
symlinks). The symptom is that we get
/share/apps/contrib/sage-4.5.2/local/lib/python2.6/site-packages/sage/
misc/misc.py in branch_current_hg()
1877 i = s.rfind('->')
1878 if i == -1:
-> 1879 raise RuntimeError, "unable to determine branch?!"
1880 s = s[i+2:]
1881 i = s.find('-')
RuntimeError: unable to determine branch?!
Error importing ipy_profile_sage - perhaps you should run %upgrade?
WARNING: Loading of ipy_profile_sage failed.
while Sage is trying to fix the paths (next output after the "Do not
interrupt this" message).
Any suggestions?
This probably does not directly address your problem, but after looking
at the code in sage-location (which is the code that fixes paths when
Sage is moved), and looking at the things that are not fixed (e.g., in
$SAGE_ROOT/local/lib/pkgconfig), I decided that I wouldn't compile and
then move Sage any more. A patch for the problems I found in pkgconfig
is up at
http://trac.sagemath.org/sage_trac/ticket/9210
which involves a pretty substantial restructuring of sage-location. I
think the patch is still ready for review. I don't know if it will fix
your problem.
Thanks,
Jason
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