title: How do I install pygraphviz with pip
body: <p>this is brew list and pip list</p>
  
  <pre><code>(lebienv) ➜  lebi git:(master) ✗ brew list
  graphviz    libpng      libxml2     mysql       openssl
  (lebienv) ➜  lebi git:(master) ✗ pip list
  Flask (0.10.1)
  itsdangerous (0.24)
  Jinja2 (2.8)
  MarkupSafe (0.23)
  pip (8.0.3)
  setuptools (20.1.1)
  Werkzeug (0.11.4)
  wheel (0.29.0)
  (lebienv) ➜  lebi git:(master) ✗
  </code></pre>
  
  <p>and excute <code>pip install pygraphviz</code></p>
  
  <pre><code>(lebienv) ➜  lebi git:(master) ✗ pip install pygraphviz
  Collecting pygraphviz
    Using cached pygraphviz-1.3.1.tar.gz
  Building wheels for collected packages: pygraphviz
    Running setup.py bdist_wheel for pygraphviz ... error
    Complete output from command /Users/zyl/song/lebi/lebienv/bin/python -u -c "import setuptools, tokenize;__file__='/private/var/folders/5t/965cgdc56ks37w8pmlmw4vx40000gn/T/pip-build-x2Vstw/pygraphviz/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" bdist_wheel -d /var/folders/5t/965cgdc56ks37w8pmlmw4vx40000gn/T/tmp7z72M3pip-wheel- --python-tag cp27:
    running bdist_wheel
    running build
    running build_py
    creating build
    creating build/lib.macosx-10.11-intel-2.7
    creating build/lib.macosx-10.11-intel-2.7/pygraphviz
    copying pygraphviz/__init__.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz
    copying pygraphviz/agraph.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz
    copying pygraphviz/graphviz.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz
    copying pygraphviz/release.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz
    copying pygraphviz/version.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz
    creating build/lib.macosx-10.11-intel-2.7/pygraphviz/tests
    copying pygraphviz/tests/__init__.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz/tests
    copying pygraphviz/tests/test.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_attribute_defaults.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_attributes.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_clear.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_drawing.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_edge_attributes.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_graph.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_html.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_layout.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_node_attributes.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_readwrite.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_string.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_subgraph.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz/tests
    copying pygraphviz/tests/test_unicode.py -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz/tests
    running egg_info
    writing pygraphviz.egg-info/PKG-INFO
    writing top-level names to pygraphviz.egg-info/top_level.txt
    writing dependency_links to pygraphviz.egg-info/dependency_links.txt
    warning: manifest_maker: standard file '-c' not found
  
    reading manifest file 'pygraphviz.egg-info/SOURCES.txt'
    reading manifest template 'MANIFEST.in'
    warning: no previously-included files matching '*~' found anywhere in distribution
    warning: no previously-included files matching '*.pyc' found anywhere in distribution
    warning: no previously-included files matching '.svn' found anywhere in distribution
    no previously-included directories found matching 'doc/build'
    writing manifest file 'pygraphviz.egg-info/SOURCES.txt'
    copying pygraphviz/graphviz.i -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz
    copying pygraphviz/graphviz_wrap.c -&gt; build/lib.macosx-10.11-intel-2.7/pygraphviz
    running build_ext
    building 'pygraphviz._graphviz' extension
    creating build/temp.macosx-10.11-intel-2.7
    creating build/temp.macosx-10.11-intel-2.7/pygraphviz
    cc -fno-strict-aliasing -fno-common -dynamic -arch i386 -arch x86_64 -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch i386 -arch x86_64 -pipe -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c pygraphviz/graphviz_wrap.c -o build/temp.macosx-10.11-intel-2.7/pygraphviz/graphviz_wrap.o
    pygraphviz/graphviz_wrap.c:3321:12: warning: incompatible pointer to integer conversion returning 'Agsym_t *' (aka 'struct Agsym_s *') from a function with result type 'int' [-Wint-conversion]
        return agattr(g, kind, name, val);
               ^~~~~~~~~~~~~~~~~~~~~~~~~~
    pygraphviz/graphviz_wrap.c:3405:7: warning: unused variable 'fd1' [-Wunused-variable]
      int fd1 ;
          ^
    pygraphviz/graphviz_wrap.c:3406:13: warning: unused variable 'mode_obj1' [-Wunused-variable]
      PyObject *mode_obj1 ;
                ^
    pygraphviz/graphviz_wrap.c:3407:13: warning: unused variable 'mode_byte_obj1' [-Wunused-variable]
      PyObject *mode_byte_obj1 ;
                ^
    pygraphviz/graphviz_wrap.c:3408:9: warning: unused variable 'mode1' [-Wunused-variable]
      char *mode1 ;
            ^
    pygraphviz/graphviz_wrap.c:3463:7: warning: unused variable 'fd2' [-Wunused-variable]
      int fd2 ;
          ^
    pygraphviz/graphviz_wrap.c:3464:13: warning: unused variable 'mode_obj2' [-Wunused-variable]
      PyObject *mode_obj2 ;
                ^
    pygraphviz/graphviz_wrap.c:3465:13: warning: unused variable 'mode_byte_obj2' [-Wunused-variable]
      PyObject *mode_byte_obj2 ;
                ^
    pygraphviz/graphviz_wrap.c:3466:9: warning: unused variable 'mode2' [-Wunused-variable]
      char *mode2 ;
            ^
    9 warnings generated.
    pygraphviz/graphviz_wrap.c:3295:15: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32]
            len = strlen(val);
                ~ ^~~~~~~~~~~
    pygraphviz/graphviz_wrap.c:3321:12: warning: incompatible pointer to integer conversion returning 'Agsym_t *' (aka 'struct Agsym_s *') from a function with result type 'int' [-Wint-conversion]
        return agattr(g, kind, name, val);
               ^~~~~~~~~~~~~~~~~~~~~~~~~~
    pygraphviz/graphviz_wrap.c:3313:15: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32]
            len = strlen(val);
                ~ ^~~~~~~~~~~
    pygraphviz/graphviz_wrap.c:3405:7: warning: unused variable 'fd1' [-Wunused-variable]
      int fd1 ;
          ^
    pygraphviz/graphviz_wrap.c:3406:13: warning: unused variable 'mode_obj1' [-Wunused-variable]
      PyObject *mode_obj1 ;
                ^
    pygraphviz/graphviz_wrap.c:3407:13: warning: unused variable 'mode_byte_obj1' [-Wunused-variable]
      PyObject *mode_byte_obj1 ;
                ^
    pygraphviz/graphviz_wrap.c:3408:9: warning: unused variable 'mode1' [-Wunused-variable]
      char *mode1 ;
            ^
    pygraphviz/graphviz_wrap.c:3463:7: warning: unused variable 'fd2' [-Wunused-variable]
      int fd2 ;
          ^
    pygraphviz/graphviz_wrap.c:3464:13: warning: unused variable 'mode_obj2' [-Wunused-variable]
      PyObject *mode_obj2 ;
                ^
    pygraphviz/graphviz_wrap.c:3465:13: warning: unused variable 'mode_byte_obj2' [-Wunused-variable]
      PyObject *mode_byte_obj2 ;
                ^
    pygraphviz/graphviz_wrap.c:3466:9: warning: unused variable 'mode2' [-Wunused-variable]
      char *mode2 ;
            ^
    11 warnings generated.
    cc -bundle -undefined dynamic_lookup -arch i386 -arch x86_64 -Wl,-F. build/temp.macosx-10.11-intel-2.7/pygraphviz/graphviz_wrap.o -lcgraph -lcdt -o build/lib.macosx-10.11-intel-2.7/pygraphviz/_graphviz.so
    ld: warning: ignoring file /usr/local/lib/libcdt.dylib, file was built for x86_64 which is not the architecture being linked (i386): /usr/local/lib/libcdt.dylib
    ld: warning: ignoring file /usr/local/lib/libcgraph.dylib, file was built for x86_64 which is not the architecture being linked (i386): /usr/local/lib/libcgraph.dylib
    installing to build/bdist.macosx-10.11-intel/wheel
    running install
    Trying pkg-config
    Failed to find pkg-config
    Trying dotneato-config
    Failed to find dotneato-config
    Failed to find dotneato-config
  
    Your Graphviz installation could not be found.
  
            1) You don't have Graphviz installed:
               Install Graphviz (http://graphviz.org)
  
            2) Your Graphviz package might incomplete.
               Install the binary development subpackage (e.g. libgraphviz-dev or similar.)
  
            3) You are using Windows
               There are no PyGraphviz binary packages for Windows but you might be
               able to build it from this source.  See
               http://networkx.lanl.gov/pygraphviz/reference/faq.html
  
            If you think your installation is correct you will need to manually
            change the include_dirs and library_dirs variables in setup.py to
            point to the correct locations of your graphviz installation.
  
            The current setting of library_dirs and include_dirs is:
    library_dirs=None
    include_dirs=None
  
    error: Error locating graphviz.
  
    ----------------------------------------
    Failed building wheel for pygraphviz
    Running setup.py clean for pygraphviz
  Failed to build pygraphviz
  Installing collected packages: pygraphviz
    Running setup.py install for pygraphviz ... error
      Complete output from command /Users/zyl/song/lebi/lebienv/bin/python -u -c "import setuptools, tokenize;__file__='/private/var/folders/5t/965cgdc56ks37w8pmlmw4vx40000gn/T/pip-build-x2Vstw/pygraphviz/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/5t/965cgdc56ks37w8pmlmw4vx40000gn/T/pip-1imEXi-record/install-record.txt --single-version-externally-managed --compile --install-headers /Users/zyl/song/lebi/lebienv/include/site/python2.7/pygraphviz:
      running install
      Trying pkg-config
      Failed to find pkg-config
      Trying dotneato-config
      Failed to find dotneato-config
      Failed to find dotneato-config
  
      Your Graphviz installation could not be found.
  
              1) You don't have Graphviz installed:
                 Install Graphviz (http://graphviz.org)
  
              2) Your Graphviz package might incomplete.
                 Install the binary development subpackage (e.g. libgraphviz-dev or similar.)
  
              3) You are using Windows
                 There are no PyGraphviz binary packages for Windows but you might be
                 able to build it from this source.  See
                 http://networkx.lanl.gov/pygraphviz/reference/faq.html
  
              If you think your installation is correct you will need to manually
              change the include_dirs and library_dirs variables in setup.py to
              point to the correct locations of your graphviz installation.
  
              The current setting of library_dirs and include_dirs is:
      library_dirs=None
      include_dirs=None
  
      error: Error locating graphviz.
  
      ----------------------------------------
  Command "/Users/zyl/song/lebi/lebienv/bin/python -u -c "import setuptools, tokenize;__file__='/private/var/folders/5t/965cgdc56ks37w8pmlmw4vx40000gn/T/pip-build-x2Vstw/pygraphviz/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/5t/965cgdc56ks37w8pmlmw4vx40000gn/T/pip-1imEXi-record/install-record.txt --single-version-externally-managed --compile --install-headers /Users/zyl/song/lebi/lebienv/include/site/python2.7/pygraphviz" failed with error code 1 in /private/var/folders/5t/965cgdc56ks37w8pmlmw4vx40000gn/T/pip-build-x2Vstw/pygraphviz
  </code></pre>
  
  <p>System :Mac OS X
  Version:10.11.1</p>
  
  <p>how to fix the problem.</p>