#11686: Race condition in matplotlib mkdir()
------------------------+---------------------------------------------------
   Reporter:  jdemeyer  |          Owner:  tbd          
       Type:  defect    |         Status:  needs_review 
   Priority:  minor     |      Milestone:  sage-4.7.2   
  Component:  packages  |       Keywords:               
Work_issues:            |       Upstream:  N/A          
   Reviewer:            |         Author:  John Palmieri
     Merged:            |   Dependencies:               
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Comment(by jhpalmieri):

 I'm confused now.  On sage.math, if I look at the install log from the old
 matplotlib-1.0.1 (during a fresh Sage build), it says
 {{{
 OPTIONAL BACKEND DEPENDENCIES
                 libpng: 1.2.35
 }}}
 But if I do "sage -f ..." on the ''same'' spkg, I get this in its install
 log:
 {{{
 OPTIONAL BACKEND DEPENDENCIES
                  libpng: found, but unknown version (no pkg-config)
 }}}
 And of course, in this old spkg, this was the only patch installed, and it
 was installed regardless of the OS.  I don't know what's going on, but I'm
 posting a new spkg which only applies the patch on Darwin.  I hope this
 improves things on non-Darwin systems, or at least doesn't hurt anything
 on such systems.

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11686#comment:15>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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