Installing pygraphviz on windows

Question

After installing the latest graphviz (2.26.3) on my Windows 7 Ultimate 64bit, I receive the following error:

C:>easy_install pygraphviz Searching for pygraphviz Reading http://pypi.python.org/simple/pygraphviz/ Reading http://networkx.lanl.gov/pygraphviz Reading http://networkx.lanl.gov/wiki/download Reading http://networkx.lanl.gov/download/pygraphviz Reading http://sourceforge.net/project/showfiles.php?group_id=122233&package_id=161979 Reading http://networkx.lanl.gov/download Best match: pygraphviz 1.1.dev1947 Downloading http://networkx.lanl.gov/download/pygraphviz/pygraphviz-1.1.dev1947.tar.gz Processing pygraphviz-1.1.dev1947.tar.gz Running pygraphviz-1.1.dev1947\setup.py -q bdist_egg --dist-dir c:\users\jonathan\appdata\local\temp\easy_install-apywwk\pygraphviz-1.1.dev1947\egg-dist-tmp-nvd0pa Trying pkg-config Failed to find pkg-config Trying dotneato-config Failed to find dotneato-config

Your graphviz installation could not be found.

Either the graphviz package is missing on incomplete (binary packages graphviz-dev or graphviz-devel missing?).

If you think your installation is correct you will need to manually change the include_path and library_path variables in setup.py to point to the correct locations of your graphviz installation.

The current setting of library_path and include_path is: library_path=None include_path=None

error: None

Any thoughts how to fix this?
This seems to be a different problem than the one described here.
Has anyone had success in installing pygraphviz on Windows? How?

Answer 1

Here's what worked for me. Precondition: Install mingw32 (included in pythonxy distrib if you're using it), Graphviz

1) Download pygraphviz sources

2) Edit setup.py to change paths to smth like

library_path=r"c:\Program Files (x86)\Graphviz 2.28\bin"
include_path=r"c:\Program Files (x86)\Graphviz 2.28\include\graphviz"

Note that it's \bin, not \lib. Linking with libs didn't work for me.

3) run python setup.py build -c mingw32

Result of step 3:

c:\Python27\Lib\site-packages\pygraphviz-1.1>python setup.py build -c mingw32
library_path=c:\Program Files (x86)\Graphviz 2.28\bin
include_path=c:\Program Files (x86)\Graphviz 2.28\include\graphviz
running build
running build_py
running build_ext
building 'pygraphviz._graphviz' extension
C:\MinGW32-xy\bin\gcc.exe -mno-cygwin -mdll -O -Wall "-Ic:\Program Files (x86)\G
raphviz 2.28\include\graphviz" -Ic:\Python27\include -Ic:\Python27\PC -c pygraph
viz/graphviz_wrap.c -o build\temp.win32-2.7\Release\pygraphviz\graphviz_wrap.o
pygraphviz/graphviz_wrap.c: In function 'agattr_label':
pygraphviz/graphviz_wrap.c:2855:5: warning: return makes integer from pointer wi
thout a cast
writing build\temp.win32-2.7\Release\pygraphviz\_graphviz.def
C:\MinGW32-xy\bin\gcc.exe -mno-cygwin -shared -s build\temp.win32-2.7\Release\py
graphviz\graphviz_wrap.o build\temp.win32-2.7\Release\pygraphviz\_graphviz.def "
-Lc:\Program Files (x86)\Graphviz 2.28\bin" -Lc:\Python27\libs -Lc:\Python27\PCb
uild "-Wl,-Rc:\Program Files (x86)\Graphviz 2.28\bin" -lcgraph -lcdt -lpython27
-lmsvcr90 -o build\lib.win32-2.7\pygraphviz\_graphviz.pyd

4) copy the result from the just built lib.win32-2.7 (single sub-folder called pygraphviz) into your Python's site-packages folder

Enjoy!