Mac Install Failed seeking graphviz/cgraph.h

[valhuber]

First, thankyou for taking this on. This is an important utility.

I have a pretty standard Mac. I used brew to install graphviz. When trying to install eralchemy2, it failed looking for graphviz/cgraph.h, as shown below.

Does this require c#? I do not have that installed (and would prefer not to)...

(venv) val@Vals-MPB-14 ApiLogicServer % echo 'digraph { a -> b }' | dot -Tsvg > output.svg
(venv) val@Vals-MPB-14 ApiLogicServer % pip install eralchemy2
Collecting eralchemy2
  Downloading eralchemy2-1.4.1-py3-none-any.whl.metadata (5.6 kB)
Requirement already satisfied: sqlalchemy>=1.4 in ./venv/lib/python3.12/site-packages (from eralchemy2) (2.0.15)
Collecting pygraphviz>=1.9 (from eralchemy2)
  Using cached pygraphviz-1.13.tar.gz (104 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Requirement already satisfied: typing-extensions>=4.2.0 in ./venv/lib/python3.12/site-packages (from sqlalchemy>=1.4->eralchemy2) (4.12.2)
Downloading eralchemy2-1.4.1-py3-none-any.whl (18 kB)
Building wheels for collected packages: pygraphviz
  Building wheel for pygraphviz (pyproject.toml) ... error
  error: subprocess-exited-with-error
  
  × Building wheel for pygraphviz (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [63 lines of output]
      running bdist_wheel
      running build
      running build_py
      creating build
      creating build/lib.macosx-10.9-universal2-cpython-312
      creating build/lib.macosx-10.9-universal2-cpython-312/pygraphviz
      copying pygraphviz/scraper.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz
      copying pygraphviz/graphviz.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz
      copying pygraphviz/__init__.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz
      copying pygraphviz/agraph.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz
      copying pygraphviz/testing.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz
      creating build/lib.macosx-10.9-universal2-cpython-312/pygraphviz/tests
      copying pygraphviz/tests/test_unicode.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz/tests
      copying pygraphviz/tests/test_scraper.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz/tests
      copying pygraphviz/tests/test_readwrite.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz/tests
      copying pygraphviz/tests/test_string.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz/tests
      copying pygraphviz/tests/__init__.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz/tests
      copying pygraphviz/tests/test_html.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz/tests
      copying pygraphviz/tests/test_node_attributes.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz/tests
      copying pygraphviz/tests/test_drawing.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz/tests
      copying pygraphviz/tests/test_repr_mimebundle.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz/tests
      copying pygraphviz/tests/test_subgraph.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz/tests
      copying pygraphviz/tests/test_close.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz/tests
      copying pygraphviz/tests/test_edge_attributes.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz/tests
      copying pygraphviz/tests/test_clear.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz/tests
      copying pygraphviz/tests/test_layout.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz/tests
      copying pygraphviz/tests/test_attribute_defaults.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz/tests
      copying pygraphviz/tests/test_graph.py -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz/tests
      running egg_info
      writing pygraphviz.egg-info/PKG-INFO
      writing dependency_links to pygraphviz.egg-info/dependency_links.txt
      writing top-level names to pygraphviz.egg-info/top_level.txt
      reading manifest file 'pygraphviz.egg-info/SOURCES.txt'
      reading manifest template 'MANIFEST.in'
      warning: no files found matching '*.swg'
      warning: no files found matching '*.png' under directory 'doc'
      warning: no files found matching '*.html' under directory 'doc'
      warning: no files found matching '*.txt' under directory 'doc'
      warning: no files found matching '*.css' under directory 'doc'
      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'
      adding license file 'LICENSE'
      writing manifest file 'pygraphviz.egg-info/SOURCES.txt'
      copying pygraphviz/graphviz.i -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz
      copying pygraphviz/graphviz_wrap.c -> build/lib.macosx-10.9-universal2-cpython-312/pygraphviz
      running build_ext
      building 'pygraphviz._graphviz' extension
      creating build/temp.macosx-10.9-universal2-cpython-312
      creating build/temp.macosx-10.9-universal2-cpython-312/pygraphviz
      clang -fno-strict-overflow -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -O3 -Wall -arch arm64 -arch x86_64 -g -DSWIG_PYTHON_STRICT_BYTE_CHAR -I/Users/val/dev/ApiLogicServer/ApiLogicServer-dev/build_and_test/ApiLogicServer/venv/include -I/Library/Frameworks/Python.framework/Versions/3.12/include/python3.12 -c pygraphviz/graphviz_wrap.c -o build/temp.macosx-10.9-universal2-cpython-312/pygraphviz/graphviz_wrap.o
      pygraphviz/graphviz_wrap.c:9:9: warning: 'SWIG_PYTHON_STRICT_BYTE_CHAR' macro redefined [-Wmacro-redefined]
      #define SWIG_PYTHON_STRICT_BYTE_CHAR
              ^
      <command line>:2:9: note: previous definition is here
      #define SWIG_PYTHON_STRICT_BYTE_CHAR 1
              ^
      pygraphviz/graphviz_wrap.c:3023:10: fatal error: 'graphviz/cgraph.h' file not found
      #include "graphviz/cgraph.h"
               ^~~~~~~~~~~~~~~~~~~
      1 warning and 1 error generated.
      error: command '/usr/bin/clang' failed with exit code 1
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for pygraphviz
Failed to build pygraphviz
ERROR: Could not build wheels for pygraphviz, which is required to install pyproject.toml-based projects

[notice] A new release of pip is available: 24.0 -> 24.2
[notice] To update, run: pip install --upgrade pip
(venv) val@Vals-MPB-14 ApiLogicServer % 

[valhuber]

I did not realize operators were standing by !!

[maurerle]

Hi, this looks like you do not have graphviz-devel installed?
https://www.graphviz.org/download/#mac