#6235: set MPLCONFIGDIR environment variable when Sage starts up
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Reporter: was | Owner: cwitty
Type: defect | Status: new
Priority: minor | Milestone: sage-4.6
Component: misc | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by jason):
Replying to [comment:13 leif]:
> Replying to [comment:12 jason]:
> > At the same time, this directory should not be inside a specific Sage
installation (i.e., below SAGE_ROOT) since that means system-wide installs
can't have individual customizations, and it also breaks system-wide font
cache generation (i.e., matplotlib assumes that a user can update the font
cache file, I believe). So where are we now? Separate matplotlib config
directories for each version of Sage inside of the .sage directory?
>
> I was thinking of that, too. Not that easy, though. (E.g. using the Sage
version as an "index" isn't reliable either.)
>
> Is the font cache the only problem? If so, we could just delete it upon
every Sage [script] start-up... (quite ugly, of course)
I believe (off the top of my head) that the error " TypeError: coercing
to Unicode: need string or buffer, dict found" comes from the newer
matplotlib including some stix fonts, and so it updates the font cache
file to include those files. However, older versions of matplotlib did
not deal gracefully with font cache files that referred to nonexistant
directories. So if you install the new Sage, then matplotlib updates the
font cache file to include the new fonts in the new matplotlib, then you
move the new Sage install, the old Sage install will probably die when
trying to open the nonexistant new font. Of course, matplotlib should
just silently regenerate the cache file, and that is what the bugfix in
the 1.0.0 spkg is.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6235#comment:14>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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