[matplotlib-devel] LookupError: unknown encoding: error on build

Hi all,

I'm building matplotlib from source (commit 0e7daad6a28160f8a6c5abb, 
though v1.3.x also dies this way...) on Mavericks with dependencies 
installed with macports. I'm getting this error in the setup:

============================================================================
Edit setup.cfg to change the build options

BUILDING MATPLOTLIB
             matplotlib: yes [1.4.x]
                 python: yes [2.7.6 (default, Nov 18 2013, 22:33:38)  [GCC
                         4.2.1 Compatible Apple LLVM 5.0 (clang-500.2.79)]]
               platform: yes [darwin]

REQUIRED DEPENDENCIES AND EXTENSIONS
                  numpy: yes [version 1.8.0]
                    six: yes [using six version 1.4.1]
               dateutil: yes [using dateutil version 1.5]
                tornado: yes [using tornado version 3.1.1]
              pyparsing: yes [using pyparsing version 2.0.1]
                  pycxx: yes [Couldn't import.  Using local copy.]
                 libagg: yes [pkg-config information for 'libagg' could not
                         be found. Using local copy.]
               freetype: yes [version 16.2.10]
                    png: yes [version 1.5.17]

OPTIONAL SUBPACKAGES
            sample_data: yes [installing]
               toolkits: yes [installing]
                  tests: yes [using nose version 1.3.0]

OPTIONAL BACKEND EXTENSIONS
                 macosx: yes [installing, darwin]
                 qt4agg: no  [PyQt4 not found]
                gtk3agg: no  [Requires pygobject to be installed.]
              gtk3cairo: no  [Requires pygobject to be installed.]
                 gtkagg: yes [installing, Gtk: 2.24.22 pygtk: 2.24.0]
                  tkagg: yes [installing, version 81008]
                  wxagg: no  [requires wxPython]
                    gtk: yes [installing, Gtk: 2.24.22 pygtk: 2.24.0]
                    agg: yes [installing]
                  cairo: yes [installing, version 1.10.0]
              windowing: no  [Microsoft Windows only]

OPTIONAL LATEX DEPENDENCIES
                 dvipng: yes [version 1.14]
            ghostscript: yes [version 9.10]
                  latex: yes [version 3.1415926]
                pdftops: yes [version 0.24.3]

running install
running bdist_egg
running egg_info
writing requirements to lib/matplotlib.egg-info/requires.txt
writing lib/matplotlib.egg-info/PKG-INFO
writing namespace_packages to lib/matplotlib.egg-info/namespace_packages.txt
writing top-level names to lib/matplotlib.egg-info/top_level.txt
writing dependency_links to lib/matplotlib.egg-info/dependency_links.txt
Traceback (most recent call last):
   File "setup.py", line 262, in <module>
     **extra_args
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/core.py", 
line 152, in setup
     dist.run_commands()
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", 
line 953, in run_commands
     self.run_command(cmd)
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", 
line 972, in run_command
     cmd_obj.run()
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools/command/install.py", 
line 73, in run
     self.do_egg_install()
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools/command/install.py", 
line 93, in do_egg_install
     self.run_command('bdist_egg')
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/cmd.py", 
line 326, in run_command
     self.distribution.run_command(command)
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", 
line 972, in run_command
     cmd_obj.run()
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools/command/bdist_egg.py", 
line 177, in run
     self.run_command("egg_info")
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/cmd.py", 
line 326, in run_command
     self.distribution.run_command(command)
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", 
line 972, in run_command
     cmd_obj.run()
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools/command/egg_info.py", 
line 187, in run
     self.find_sources()
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools/command/egg_info.py", 
line 230, in find_sources
     mm.run()
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools/command/egg_info.py", 
line 296, in run
     self.add_defaults()
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools/command/egg_info.py", 
line 335, in add_defaults
     rcfiles = list(walk_revctrl())
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools/command/sdist.py", 
line 18, in walk_revctrl
     for item in ep.load()(dirname):
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools/command/sdist.py", 
line 58, in _default_revctrl
     for item in finder(dirname):
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools/svn_utils.py", 
line 419, in svn_finder
     info = SvnInfo.load(dirname)
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools/svn_utils.py", 
line 221, in load
     code, data = _run_command(['svn', 'info', normdir])
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools/svn_utils.py", 
line 41, in _run_command
     data = decode_as_string(data, encoding)
   File 
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools/svn_utils.py", 
line 93, in decode_as_string
     text = text.decode(encoding)
LookupError: unknown encoding:

I should note that I can install ipython from source with no problem.

Anybody have an idea how to solve this? (and why is setup.py looking at 
svn_tools.py?)

Thanks,

M