`python -m build` fails to build source distribution and wheel

[wbkboyer]

Describe the bug

I first noticed this issue while testing #38 (see bottom of PR description for "accordion" containing logs), where I was trying to build the release before publishing to TestPyPI. When I ran python -m build in the root of the planarity repository, instead of producing the source distribution and the .whl for my current platform, I got a whole whack of Cannot convert 'graphP' to Python object errors.

Then, when I switch to the HEAD of master (at the time ff460a), the build failed due to a "missing" header.

Reproduction steps

As per the steps I'd performed in #28 , i.e. following Generating Distribution Archives:

1. Created and activated my "build" virtual environment

wbkboyer@Wandas-MacBook-Pro planarity % rm -rf .buildenv 
wbkboyer@Wandas-MacBook-Pro planarity % python3.14 -m venv .buildenv
wbkboyer@Wandas-MacBook-Pro planarity % source .buildenv/bin/activate

2. Installed dependencies outlined in requirements.txt, most importantly for this process setuptools, cython, build, and twine.

(.buildenv) wbkboyer@Wandas-MacBook-Pro planarity % pip install --upgrade pip
...
Successfully installed pip-26.0.1
(.buildenv) wbkboyer@Wandas-MacBook-Pro planarity % pip install -r requirements.txt 
...
Successfully installed build-1.4.4 certifi-2026.4.22 charset_normalizer-3.4.7 contourpy-1.3.3 cycler-0.12.1 cython-3.2.4 docutils-0.22.4 fonttools-4.62.1 id-1.6.1 idna-3.13 iniconfig-2.3.0 jaraco.classes-3.4.0 jaraco.context-6.1.2 jaraco.functools-4.4.0 keyring-25.7.0 kiwisolver-1.5.0 markdown-it-py-4.0.0 matplotlib-3.10.8 mdurl-0.1.2 more-itertools-11.0.2 networkx-3.6.1 nh3-0.3.4 numpy-2.4.4 packaging-26.1 pillow-12.2.0 pluggy-1.6.0 pygments-2.20.0 pyparsing-3.3.2 pyproject_hooks-1.2.0 pytest-9.0.3 python-dateutil-2.9.0.post0 readme-renderer-44.0 requests-2.33.1 requests-toolbelt-1.0.0 rfc3986-2.0.0 rich-15.0.0 setuptools-82.0.1 six-1.17.0 twine-6.2.0 urllib3-2.6.3 wheel-0.47.0

3. Cleaned up any leftover build artifacts from prior runs:

(.buildenv) wbkboyer@Wandas-MacBook-Pro planarity % git status
On branch Issue37-graphLibBump
Your branch is up to date with 'origin/Issue37-graphLibBump'.

nothing to commit, working tree clean
(.buildenv) wbkboyer@Wandas-MacBook-Pro planarity % git clean -d -x -e .buildenv -e .venv -f
Removing .pytest_cache/
Removing .vscode/
Removing build/
Removing dist/
Removing examples/__pycache__/
Removing examples/full/__pycache__/
Removing planarity.egg-info/
Removing planarity/__pycache__/
Removing planarity/classic/__pycache__/
Removing tests/__pycache__/

4. Attempted to run python -m build

Logs

(.buildenv) wbkboyer@Wandas-MacBook-Pro planarity % python -m build
* Creating isolated environment: venv+pip...
* Installing packages in isolated environment:
  - cython
  - setuptools
* Getting build dependencies for sdist...
Compiling planarity/classic/planarity.pyx because it depends on /private/var/folders/t1/2kcfnw2902x6gjpfcq7l1r800000gn/T/build-env-i79zven0/lib/python3.14/site-packages/Cython/Includes/libc/stdlib.pxd.
Compiling planarity/full/graph.pyx because it depends on /private/var/folders/t1/2kcfnw2902x6gjpfcq7l1r800000gn/T/build-env-i79zven0/lib/python3.14/site-packages/Cython/Includes/libc/stdlib.pxd.
[1/2] Cythonizing planarity/classic/planarity.pyx
[2/2] Cythonizing planarity/full/graph.pyx
running egg_info
creating planarity.egg-info
writing planarity.egg-info/PKG-INFO
writing dependency_links to planarity.egg-info/dependency_links.txt
writing top-level names to planarity.egg-info/top_level.txt
writing manifest file 'planarity.egg-info/SOURCES.txt'
reading manifest file 'planarity.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching '*.gz' under directory 'examples'
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 '.git' found anywhere in distribution
adding license file 'LICENSE.txt'
writing manifest file 'planarity.egg-info/SOURCES.txt'
* Building sdist...
running sdist
running egg_info
writing planarity.egg-info/PKG-INFO
writing dependency_links to planarity.egg-info/dependency_links.txt
writing top-level names to planarity.egg-info/top_level.txt
reading manifest file 'planarity.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching '*.gz' under directory 'examples'
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 '.git' found anywhere in distribution
adding license file 'LICENSE.txt'
writing manifest file 'planarity.egg-info/SOURCES.txt'
running check
creating planarity-0.7.11
creating planarity-0.7.11/doc
creating planarity-0.7.11/doc/source
creating planarity-0.7.11/doc/source/reference
creating planarity-0.7.11/doc/sphinxext
creating planarity-0.7.11/examples/classic
creating planarity-0.7.11/examples/full
creating planarity-0.7.11/planarity
creating planarity-0.7.11/planarity.egg-info
creating planarity-0.7.11/planarity/c
creating planarity-0.7.11/planarity/c/graphLib
creating planarity-0.7.11/planarity/c/graphLib/extensionSystem
creating planarity-0.7.11/planarity/c/graphLib/homeomorphSearch
creating planarity-0.7.11/planarity/c/graphLib/io
creating planarity-0.7.11/planarity/c/graphLib/lowLevelUtils
creating planarity-0.7.11/planarity/c/graphLib/planarityRelated
creating planarity-0.7.11/planarity/classic
creating planarity-0.7.11/planarity/full
creating planarity-0.7.11/tests
copying files to planarity-0.7.11...
copying LICENSE.txt -> planarity-0.7.11
copying MANIFEST.in -> planarity-0.7.11
copying README.md -> planarity-0.7.11
copying pyproject.toml -> planarity-0.7.11
copying setup.py -> planarity-0.7.11
copying doc/Makefile -> planarity-0.7.11/doc
copying doc/source/conf.py -> planarity-0.7.11/doc/source
copying doc/source/index.rst -> planarity-0.7.11/doc/source
copying doc/source/reference/index.rst -> planarity-0.7.11/doc/source/reference
copying doc/sphinxext/LICENSE.txt -> planarity-0.7.11/doc/sphinxext
copying doc/sphinxext/docscrape.py -> planarity-0.7.11/doc/sphinxext
copying doc/sphinxext/docscrape_sphinx.py -> planarity-0.7.11/doc/sphinxext
copying doc/sphinxext/numpydoc.py -> planarity-0.7.11/doc/sphinxext
copying examples/classic/ascii.py -> planarity-0.7.11/examples/classic
copying examples/classic/graph_formats.py -> planarity-0.7.11/examples/classic
copying examples/classic/kuratowski.py -> planarity-0.7.11/examples/classic
copying examples/classic/networkx_draw.py -> planarity-0.7.11/examples/classic
copying examples/classic/networkx_interface.py -> planarity-0.7.11/examples/classic
copying examples/classic/pgraph_class.py -> planarity-0.7.11/examples/classic
copying examples/classic/write_adjlist.py -> planarity-0.7.11/examples/classic
copying examples/full/planarity_app_utils.py -> planarity-0.7.11/examples/full
copying examples/full/test_specific_graph.py -> planarity-0.7.11/examples/full
copying planarity/__init__.py -> planarity-0.7.11/planarity
copying planarity.egg-info/PKG-INFO -> planarity-0.7.11/planarity.egg-info
copying planarity.egg-info/SOURCES.txt -> planarity-0.7.11/planarity.egg-info
copying planarity.egg-info/dependency_links.txt -> planarity-0.7.11/planarity.egg-info
copying planarity.egg-info/top_level.txt -> planarity-0.7.11/planarity.egg-info
copying planarity/c/LICENSE.TXT -> planarity-0.7.11/planarity/c
copying planarity/c/README -> planarity-0.7.11/planarity/c
copying planarity/c/graphLib/graphDFSUtils.c -> planarity-0.7.11/planarity/c/graphLib
copying planarity/c/graphLib/graphUtils.c -> planarity-0.7.11/planarity/c/graphLib
copying planarity/c/graphLib/extensionSystem/graphExtensions.c -> planarity-0.7.11/planarity/c/graphLib/extensionSystem
copying planarity/c/graphLib/homeomorphSearch/graphK23Search.c -> planarity-0.7.11/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/homeomorphSearch/graphK23Search_Extensions.c -> planarity-0.7.11/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/homeomorphSearch/graphK33Search.c -> planarity-0.7.11/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/homeomorphSearch/graphK33Search_Extensions.c -> planarity-0.7.11/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/homeomorphSearch/graphK4Search.c -> planarity-0.7.11/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/homeomorphSearch/graphK4Search_Extensions.c -> planarity-0.7.11/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/io/g6-api-utilities.c -> planarity-0.7.11/planarity/c/graphLib/io
copying planarity/c/graphLib/io/g6-read-iterator.c -> planarity-0.7.11/planarity/c/graphLib/io
copying planarity/c/graphLib/io/g6-write-iterator.c -> planarity-0.7.11/planarity/c/graphLib/io
copying planarity/c/graphLib/io/graphIO.c -> planarity-0.7.11/planarity/c/graphLib/io
copying planarity/c/graphLib/io/strOrFile.c -> planarity-0.7.11/planarity/c/graphLib/io
copying planarity/c/graphLib/io/strbuf.c -> planarity-0.7.11/planarity/c/graphLib/io
copying planarity/c/graphLib/lowLevelUtils/apiutils.c -> planarity-0.7.11/planarity/c/graphLib/lowLevelUtils
copying planarity/c/graphLib/lowLevelUtils/listcoll.c -> planarity-0.7.11/planarity/c/graphLib/lowLevelUtils
copying planarity/c/graphLib/lowLevelUtils/stack.c -> planarity-0.7.11/planarity/c/graphLib/lowLevelUtils
copying planarity/c/graphLib/planarityRelated/graphDrawPlanar.c -> planarity-0.7.11/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphDrawPlanar_Extensions.c -> planarity-0.7.11/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphEmbed.c -> planarity-0.7.11/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphIsolator.c -> planarity-0.7.11/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphNonplanar.c -> planarity-0.7.11/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphOuterplanarObstruction.c -> planarity-0.7.11/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphTests.c -> planarity-0.7.11/planarity/c/graphLib/planarityRelated
copying planarity/classic/__init__.py -> planarity-0.7.11/planarity/classic
copying planarity/classic/cplanarity.pxd -> planarity-0.7.11/planarity/classic
copying planarity/classic/planarity.c -> planarity-0.7.11/planarity/classic
copying planarity/classic/planarity.pyx -> planarity-0.7.11/planarity/classic
copying planarity/classic/planarity_functions.py -> planarity-0.7.11/planarity/classic
copying planarity/classic/planarity_networkx.py -> planarity-0.7.11/planarity/classic
copying planarity/full/__init__.py -> planarity-0.7.11/planarity/full
copying planarity/full/cappconst.pxd -> planarity-0.7.11/planarity/full
copying planarity/full/cg6IterationDefs.pxd -> planarity-0.7.11/planarity/full
copying planarity/full/cgraphLib.pxd -> planarity-0.7.11/planarity/full
copying planarity/full/g6IterationUtils.c -> planarity-0.7.11/planarity/full
copying planarity/full/g6IterationUtils.pyx -> planarity-0.7.11/planarity/full
copying planarity/full/graph.c -> planarity-0.7.11/planarity/full
copying planarity/full/graph.pyx -> planarity-0.7.11/planarity/full
copying tests/test_planarity.py -> planarity-0.7.11/tests
copying tests/test_planarity_networkx.py -> planarity-0.7.11/tests
copying planarity.egg-info/SOURCES.txt -> planarity-0.7.11/planarity.egg-info
Writing planarity-0.7.11/setup.cfg
Creating tar archive
removing 'planarity-0.7.11' (and everything under it)
* Building wheel from sdist
* Creating isolated environment: venv+pip...
* Installing packages in isolated environment:
  - cython
  - setuptools
* Getting build dependencies for wheel...
Compiling planarity/classic/planarity.pyx because it depends on /private/var/folders/t1/2kcfnw2902x6gjpfcq7l1r800000gn/T/build-env-azwy86v9/lib/python3.14/site-packages/Cython/Includes/libc/stdlib.pxd.
Compiling planarity/full/graph.pyx because it depends on /private/var/folders/t1/2kcfnw2902x6gjpfcq7l1r800000gn/T/build-env-azwy86v9/lib/python3.14/site-packages/Cython/Includes/libc/stdlib.pxd.
[1/2] Cythonizing planarity/classic/planarity.pyx
[2/2] Cythonizing planarity/full/graph.pyx

Error compiling Cython file:
------------------------------------------------------------
...


cdef class Graph:
    def __cinit__(self):
        global global_id_count
        self._theGraph = cgraphLib.gp_New()
                                         ^
------------------------------------------------------------
planarity/full/graph.pyx:41:41: Cannot convert 'graphP' to Python object

Error compiling Cython file:
------------------------------------------------------------
...

cdef class Graph:
    def __cinit__(self):
        global global_id_count
        self._theGraph = cgraphLib.gp_New()
        if self._theGraph == NULL:
                          ^
------------------------------------------------------------
planarity/full/graph.pyx:42:26: Invalid types for '==' (Python object, void *)

Error compiling Cython file:
------------------------------------------------------------
...
        if self._theGraph == NULL:
            raise MemoryError("gp_New() failed.")
        self.owns_graphP = True

    def __dealloc__(self):
        if self._theGraph != NULL and self.owns_graphP:
                          ^
------------------------------------------------------------
planarity/full/graph.pyx:47:26: Invalid types for '!=' (Python object, void *)

Error compiling Cython file:
------------------------------------------------------------
...
            raise MemoryError("gp_New() failed.")
        self.owns_graphP = True

    def __dealloc__(self):
        if self._theGraph != NULL and self.owns_graphP:
            cgraphLib.gp_Free(&self._theGraph)
                              ^
------------------------------------------------------------
planarity/full/graph.pyx:48:30: Cannot take address of Python object attribute '_theGraph'

Error compiling Cython file:
------------------------------------------------------------
...
            cgraphLib.gp_Free(&self._theGraph)

    def get_wrapper_for_graphP(self) -> Graph:
        cdef Graph new_wrapper = Graph()

        if new_wrapper._theGraph != NULL:
                                 ^
------------------------------------------------------------
planarity/full/graph.pyx:53:33: Invalid types for '!=' (Python object, void *)

Error compiling Cython file:
------------------------------------------------------------
...

    def get_wrapper_for_graphP(self) -> Graph:
        cdef Graph new_wrapper = Graph()

        if new_wrapper._theGraph != NULL:
            cgraphLib.gp_Free(&new_wrapper._theGraph)
                              ^
------------------------------------------------------------
planarity/full/graph.pyx:54:30: Cannot take address of Python object attribute '_theGraph'

Error compiling Cython file:
------------------------------------------------------------
...

    def gp_IsEdge(self, int e):
        return (
            (e >= self.gp_EdgeArrayStart()) and
            (e < self.gp_EdgeArraySize()) and
            cgraphLib.gp_IsEdge(self._theGraph, e)
                                    ^
------------------------------------------------------------
planarity/full/graph.pyx:64:36: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
            (e < self.gp_EdgeArraySize()) and
            cgraphLib.gp_IsEdge(self._theGraph, e)
        )

    def gp_EdgeArrayStart(self):
        return cgraphLib.gp_EdgeArrayStart(self._theGraph)
                                               ^
------------------------------------------------------------
planarity/full/graph.pyx:68:47: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
        if not self.gp_IsEdge(e):
            raise RuntimeError(
                f"gp_EdgeInUse() failed: invalid edge index '{e}'."
            )

        return cgraphLib.gp_EdgeInUse(self._theGraph, e)
                                          ^
------------------------------------------------------------
planarity/full/graph.pyx:76:42: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
            )

        return cgraphLib.gp_EdgeInUse(self._theGraph, e)

    def gp_EdgeArraySize(self):
        return cgraphLib.gp_EdgeArraySize(self._theGraph)
                                              ^
------------------------------------------------------------
planarity/full/graph.pyx:79:46: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...

    def gp_EdgeArraySize(self):
        return cgraphLib.gp_EdgeArraySize(self._theGraph)

    def gp_EdgeInUseArraySize(self):
        return cgraphLib.gp_EdgeInUseArraySize(self._theGraph)
                                                   ^
------------------------------------------------------------
planarity/full/graph.pyx:82:51: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
        if not self.gp_IsVertex(v):
            raise RuntimeError(
                f"gp_GetFirstEdge() failed: invalid vertex intex '{v}'."
            )

        return cgraphLib.gp_GetFirstEdge(self._theGraph, v)
                                             ^
------------------------------------------------------------
planarity/full/graph.pyx:90:45: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
        if not self.gp_IsEdge(e):
            raise RuntimeError(
                f"gp_GetNextEdge() failed: invalid edge index '{e}'."
            )

        return cgraphLib.gp_GetNextEdge(self._theGraph, e)
                                            ^
------------------------------------------------------------
planarity/full/graph.pyx:98:44: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
        if not self.gp_IsEdge(e):
            raise RuntimeError(
                f"gp_GetNeighbor() failed: invalid edge index '{e}'."
            )

        return cgraphLib.gp_GetNeighbor(self._theGraph, e)
                                            ^
------------------------------------------------------------
planarity/full/graph.pyx:106:44: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...

    def gp_IsVertex(self, int v):
        return (
            (v >= self.gp_GetFirstVertex()) and
            (v <= self.gp_GetLastVertex()) and
            cgraphLib.gp_IsVertex(self._theGraph, v)
                                      ^
------------------------------------------------------------
planarity/full/graph.pyx:112:38: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
            (v <= self.gp_GetLastVertex()) and
            cgraphLib.gp_IsVertex(self._theGraph, v)
        )

    def gp_GetFirstVertex(self):
        return cgraphLib.gp_GetFirstVertex(self._theGraph)
                                               ^
------------------------------------------------------------
planarity/full/graph.pyx:116:47: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...

    def gp_GetFirstVertex(self):
        return cgraphLib.gp_GetFirstVertex(self._theGraph)

    def gp_GetLastVertex(self):
        return cgraphLib.gp_GetLastVertex(self._theGraph)
                                              ^
------------------------------------------------------------
planarity/full/graph.pyx:119:46: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
        return cgraphLib.gp_GetLastVertex(self._theGraph)

    def gp_VertexInRangeAscending(self, int v):
        return (
            v >= self.gp_GetFirstVertex() and
            cgraphLib.gp_VertexInRangeAscending(self._theGraph, v)
                                                    ^
------------------------------------------------------------
planarity/full/graph.pyx:124:52: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...

    def gp_GetN(self)-> int:
        """
        Returns the number of vertices in the graph.
        """
        if self._theGraph == NULL:
                          ^
------------------------------------------------------------
planarity/full/graph.pyx:131:26: Invalid types for '==' (Python object, void *)

Error compiling Cython file:
------------------------------------------------------------
...
        Returns the number of vertices in the graph.
        """
        if self._theGraph == NULL:
            raise RuntimeError("Graph is not initialized.")

        return cgraphLib.gp_GetN(self._theGraph)
                                     ^
------------------------------------------------------------
planarity/full/graph.pyx:134:37: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
            raise RuntimeError("Graph is not initialized.")

        return cgraphLib.gp_GetN(self._theGraph)

    def gp_InitGraph(self, int n):
        if cgraphLib.gp_InitGraph(self._theGraph, n) != cappconst.OK:
                                      ^
------------------------------------------------------------
planarity/full/graph.pyx:137:38: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
    def gp_InitGraph(self, int n):
        if cgraphLib.gp_InitGraph(self._theGraph, n) != cappconst.OK:
            raise RuntimeError(f"gp_InitGraph() failed.")

    def gp_ReinitializeGraph(self):
        cgraphLib.gp_ReinitializeGraph(self._theGraph)
                                           ^
------------------------------------------------------------
planarity/full/graph.pyx:141:43: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
        cgraphLib.gp_ReinitializeGraph(self._theGraph)

    def gp_CopyGraph(self, Graph src_graph):
        # NOTE: this is interpreting the self as the dstGraph, i.e. copying
        # the Graph wrapper that is passed in as the srcGraph
        if self._theGraph == NULL:
                          ^
------------------------------------------------------------
planarity/full/graph.pyx:146:26: Invalid types for '==' (Python object, void *)

Error compiling Cython file:
------------------------------------------------------------
...
        if self.gp_GetN() != src_graph.gp_GetN():
            raise ValueError(
                "Source and destination graphs must have the same order "
                "to copy graphP struct.")

        if cgraphLib.gp_CopyGraph(self._theGraph, src_graph._theGraph) != cappconst.OK:
                                      ^
------------------------------------------------------------
planarity/full/graph.pyx:164:38: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
        if self.gp_GetN() != src_graph.gp_GetN():
            raise ValueError(
                "Source and destination graphs must have the same order "
                "to copy graphP struct.")

        if cgraphLib.gp_CopyGraph(self._theGraph, src_graph._theGraph) != cappconst.OK:
                                                           ^
------------------------------------------------------------
planarity/full/graph.pyx:164:59: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...

        if cgraphLib.gp_CopyGraph(self._theGraph, src_graph._theGraph) != cappconst.OK:
            raise RuntimeError(f"gp_CopyGraph() failed.")

    def gp_DupGraph(self) -> Graph:
        cdef cgraphLib.graphP theGraph_dup = cgraphLib.gp_DupGraph(self._theGraph)
                                                                       ^
------------------------------------------------------------
planarity/full/graph.pyx:168:71: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...

        cdef Graph new_graph = Graph()
        if new_graph is None:
            raise MemoryError("Unable to create new Graph container for duplicate.")

        if new_graph._theGraph != NULL:
                               ^
------------------------------------------------------------
planarity/full/graph.pyx:176:31: Invalid types for '!=' (Python object, void *)

Error compiling Cython file:
------------------------------------------------------------
...
        cdef Graph new_graph = Graph()
        if new_graph is None:
            raise MemoryError("Unable to create new Graph container for duplicate.")

        if new_graph._theGraph != NULL:
            cgraphLib.gp_Free(&new_graph._theGraph)
                              ^
------------------------------------------------------------
planarity/full/graph.pyx:177:30: Cannot take address of Python object attribute '_theGraph'

Error compiling Cython file:
------------------------------------------------------------
...
            raise MemoryError("Unable to create new Graph container for duplicate.")

        if new_graph._theGraph != NULL:
            cgraphLib.gp_Free(&new_graph._theGraph)

        new_graph._theGraph = theGraph_dup
                              ^
------------------------------------------------------------
planarity/full/graph.pyx:179:30: Cannot convert 'graphP' to Python object

Error compiling Cython file:
------------------------------------------------------------
...
    def gp_Read(self, str infile_name):
        # Convert Python str to UTF-8 encoded bytes, and then to const char *
        cdef bytes encoded = infile_name.encode('utf-8')
        cdef const char *FileName = encoded

        if cgraphLib.gp_Read(self._theGraph, FileName) != cappconst.OK:
                                 ^
------------------------------------------------------------
planarity/full/graph.pyx:189:33: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...

        # Convert Python str to UTF-8 encoded bytes, and then to const char *
        cdef bytes encoded = outfile_name.encode('utf-8')
        cdef const char *theFileName = encoded

        if cgraphLib.gp_Write(self._theGraph, theFileName, mode_code) != cappconst.OK:
                                  ^
------------------------------------------------------------
planarity/full/graph.pyx:207:34: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
        if not self.gp_IsVertex(u):
            raise RuntimeError(f"'{u}' is not a valid vertex label.")
        if not self.gp_IsVertex(v):
            raise RuntimeError(f"'{v}' is not a valid vertex label.")

        return cgraphLib.gp_FindEdge(self._theGraph, u, v)
                                         ^
------------------------------------------------------------
planarity/full/graph.pyx:218:41: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...

    def gp_GetVertexDegree(self, int v):
        if not self.gp_IsVertex(v):
            raise RuntimeError(f"'{v}' is not a valid vertex label.")

        return cgraphLib.gp_GetVertexDegree(self._theGraph, v)
                                                ^
------------------------------------------------------------
planarity/full/graph.pyx:224:48: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
            raise RuntimeError(f"'{v}' is not a valid vertex label.")

        return cgraphLib.gp_GetVertexDegree(self._theGraph, v)

    def gp_GetEdgeCapacity(self):
        return cgraphLib.gp_GetEdgeCapacity(self._theGraph)
                                                ^
------------------------------------------------------------
planarity/full/graph.pyx:227:48: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...

    def gp_GetEdgeCapacity(self):
        return cgraphLib.gp_GetEdgeCapacity(self._theGraph)

    def gp_EnsureEdgeCapacity(self, int new_edge_capacity):
        if cgraphLib.gp_EnsureEdgeCapacity(self._theGraph, new_edge_capacity) != cappconst.OK:
                                               ^
------------------------------------------------------------
planarity/full/graph.pyx:230:47: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
            )
        if vlink != 0 and vlink != 1:
            raise RuntimeError(
                f"Invalid link index for vlink: '{vlink}'."
            )
        if cgraphLib.gp_AddEdge(self._theGraph, u, ulink, v, vlink) != cappconst.OK:
                                    ^
------------------------------------------------------------
planarity/full/graph.pyx:244:36: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
        if not self.gp_IsEdge(e):
            raise RuntimeError(
                f"gp_DeleteEdge() failed: invalid edge '{e}'."
            )

        return cgraphLib.gp_DeleteEdge(self._theGraph, e)
                                           ^
------------------------------------------------------------
planarity/full/graph.pyx:256:43: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
            )

        return cgraphLib.gp_DeleteEdge(self._theGraph, e)

    def gp_ExtendWith_Planarity(self):
        if cgraphLib.gp_ExtendWith_Planarity(self._theGraph) != cappconst.OK:
                                                 ^
------------------------------------------------------------
planarity/full/graph.pyx:259:49: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
    def gp_ExtendWith_Planarity(self):
        if cgraphLib.gp_ExtendWith_Planarity(self._theGraph) != cappconst.OK:
            raise RuntimeError("Failed to extend graph with Planarity structures.")

    def gp_ExtendWith_DrawPlanar(self):
        if cgraphLib.gp_ExtendWith_DrawPlanar(self._theGraph) != cappconst.OK:
                                                  ^
------------------------------------------------------------
planarity/full/graph.pyx:263:50: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
    def gp_DrawPlanar_RenderToFile(self, str outfile_name):
        # Convert Python str to UTF-8 encoded bytes, and then to const char *
        cdef bytes encoded = outfile_name.encode('utf-8')
        cdef const char *theFileName = encoded

        if cgraphLib.gp_DrawPlanar_RenderToFile(self._theGraph, theFileName) != cappconst.OK:
                                                    ^
------------------------------------------------------------
planarity/full/graph.pyx:271:52: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
        if cgraphLib.gp_DrawPlanar_RenderToFile(self._theGraph, theFileName) != cappconst.OK:
            raise RuntimeError(f"Failed to render embedding to file '{outfile_name}'.")

    def gp_DrawPlanar_RenderToString(self):
        cdef char* renditionString = NULL
        if cgraphLib.gp_DrawPlanar_RenderToString(self._theGraph, &renditionString) != OK:
                                                      ^
------------------------------------------------------------
planarity/full/graph.pyx:276:54: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
                ) from string_conversion_error
        finally:
            free(renditionString)

    def gp_ExtendWith_Outerplanarity(self):
        if cgraphLib.gp_ExtendWith_Outerplanarity(self._theGraph) != cappconst.OK:
                                                      ^
------------------------------------------------------------
planarity/full/graph.pyx:289:54: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
    def gp_ExtendWith_Outerplanarity(self):
        if cgraphLib.gp_ExtendWith_Outerplanarity(self._theGraph) != cappconst.OK:
            raise RuntimeError("Failed to extend graph with Outerplanarity structures.")

    def gp_ExtendWith_K23Search(self):
        if cgraphLib.gp_ExtendWith_K23Search(self._theGraph) != cappconst.OK:
                                                 ^
------------------------------------------------------------
planarity/full/graph.pyx:293:49: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
    def gp_ExtendWith_K23Search(self):
        if cgraphLib.gp_ExtendWith_K23Search(self._theGraph) != cappconst.OK:
            raise RuntimeError("Failed to extend graph with K23Search structures.")

    def gp_ExtendWith_K33Search(self):
        if cgraphLib.gp_ExtendWith_K33Search(self._theGraph) != cappconst.OK:
                                                 ^
------------------------------------------------------------
planarity/full/graph.pyx:297:49: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
    def gp_ExtendWith_K33Search(self):
        if cgraphLib.gp_ExtendWith_K33Search(self._theGraph) != cappconst.OK:
            raise RuntimeError("Failed to extend graph with K33Search structures.")

    def gp_ExtendWith_K4Search(self):
        if cgraphLib.gp_ExtendWith_K4Search(self._theGraph) != cappconst.OK:
                                                ^
------------------------------------------------------------
planarity/full/graph.pyx:301:48: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...
    def gp_ExtendWith_K4Search(self):
        if cgraphLib.gp_ExtendWith_K4Search(self._theGraph) != cappconst.OK:
            raise RuntimeError("Failed to extend graph with K4Search structures.")

    def gp_Embed(self, int embedFlags) -> int:
        return cgraphLib.gp_Embed(self._theGraph, embedFlags)
                                      ^
------------------------------------------------------------
planarity/full/graph.pyx:305:38: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...

    def gp_Embed(self, int embedFlags) -> int:
        return cgraphLib.gp_Embed(self._theGraph, embedFlags)

    def gp_TestEmbedResultIntegrity(self, Graph copy_of_orig_graph, int embed_result) -> int:
        return cgraphLib.gp_TestEmbedResultIntegrity(self._theGraph, copy_of_orig_graph._theGraph, embed_result)
                                                         ^
------------------------------------------------------------
planarity/full/graph.pyx:308:57: Cannot convert Python object to 'graphP'

Error compiling Cython file:
------------------------------------------------------------
...

    def gp_Embed(self, int embedFlags) -> int:
        return cgraphLib.gp_Embed(self._theGraph, embedFlags)

    def gp_TestEmbedResultIntegrity(self, Graph copy_of_orig_graph, int embed_result) -> int:
        return cgraphLib.gp_TestEmbedResultIntegrity(self._theGraph, copy_of_orig_graph._theGraph, embed_result)
                                                                                       ^
------------------------------------------------------------
planarity/full/graph.pyx:308:87: Cannot convert Python object to 'graphP'
Traceback (most recent call last):
  File "/Users/wbkboyer/git/planarity/.buildenv/lib/python3.14/site-packages/pyproject_hooks/_in_process/_in_process.py", line 389, in <module>
    main()
    ~~~~^^
  File "/Users/wbkboyer/git/planarity/.buildenv/lib/python3.14/site-packages/pyproject_hooks/_in_process/_in_process.py", line 373, in main
    json_out["return_val"] = hook(**hook_input["kwargs"])
                             ~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/wbkboyer/git/planarity/.buildenv/lib/python3.14/site-packages/pyproject_hooks/_in_process/_in_process.py", line 143, in get_requires_for_build_wheel
    return hook(config_settings)
  File "/private/var/folders/t1/2kcfnw2902x6gjpfcq7l1r800000gn/T/build-env-azwy86v9/lib/python3.14/site-packages/setuptools/build_meta.py", line 333, in get_requires_for_build_wheel
    return self._get_build_requires(config_settings, requirements=[])
           ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/private/var/folders/t1/2kcfnw2902x6gjpfcq7l1r800000gn/T/build-env-azwy86v9/lib/python3.14/site-packages/setuptools/build_meta.py", line 301, in _get_build_requires
    self.run_setup()
    ~~~~~~~~~~~~~~^^
  File "/private/var/folders/t1/2kcfnw2902x6gjpfcq7l1r800000gn/T/build-env-azwy86v9/lib/python3.14/site-packages/setuptools/build_meta.py", line 317, in run_setup
    exec(code, locals())
    ~~~~^^^^^^^^^^^^^^^^
  File "<string>", line 53, in <module>
  File "/private/var/folders/t1/2kcfnw2902x6gjpfcq7l1r800000gn/T/build-env-azwy86v9/lib/python3.14/site-packages/Cython/Build/Dependencies.py", line 1153, in cythonize
    cythonize_one(*args)
    ~~~~~~~~~~~~~^^^^^^^
  File "/private/var/folders/t1/2kcfnw2902x6gjpfcq7l1r800000gn/T/build-env-azwy86v9/lib/python3.14/site-packages/Cython/Build/Dependencies.py", line 1297, in cythonize_one
    raise CompileError(None, pyx_file)
Cython.Compiler.Errors.CompileError: planarity/full/graph.pyx

ERROR Backend subprocess exited when trying to invoke get_requires_for_build_wheel

5. Switch to ff460a, clean build environment, and re-run python -m build, which fails due to fatal error: '../lowLevelUtils/appconst.h' file not found (even though the file does exist)

Logs

wbkboyer@Wandas-MacBook-Pro planarity % git checkout ff460a
Note: switching to 'ff460a'.
...

HEAD is now at ff460ad Merge pull request #36 from graph-algorithms/Issue22-ReviseTemplatesToMatchEAPS
(.buildenv) wbkboyer@Wandas-MacBook-Pro planarity % git clean -d -x -e .buildenv -e .venv -f
Removing dist/
Removing planarity.egg-info/
(.buildenv) wbkboyer@Wandas-MacBook-Pro planarity % python -m build                         
* Creating isolated environment: venv+pip...
* Installing packages in isolated environment:
  - cython
  - setuptools
* Getting build dependencies for sdist...
Compiling planarity/classic/planarity.pyx because it changed.
Compiling planarity/full/g6IterationUtils.pyx because it changed.
Compiling planarity/full/graph.pyx because it changed.
[1/3] Cythonizing planarity/classic/planarity.pyx
[2/3] Cythonizing planarity/full/g6IterationUtils.pyx
[3/3] Cythonizing planarity/full/graph.pyx
running egg_info
creating planarity.egg-info
writing planarity.egg-info/PKG-INFO
writing dependency_links to planarity.egg-info/dependency_links.txt
writing top-level names to planarity.egg-info/top_level.txt
writing manifest file 'planarity.egg-info/SOURCES.txt'
reading manifest file 'planarity.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching '*.gz' under directory 'examples'
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 '.git' found anywhere in distribution
adding license file 'LICENSE.txt'
writing manifest file 'planarity.egg-info/SOURCES.txt'
* Building sdist...
running sdist
running egg_info
writing planarity.egg-info/PKG-INFO
writing dependency_links to planarity.egg-info/dependency_links.txt
writing top-level names to planarity.egg-info/top_level.txt
reading manifest file 'planarity.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching '*.gz' under directory 'examples'
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 '.git' found anywhere in distribution
adding license file 'LICENSE.txt'
writing manifest file 'planarity.egg-info/SOURCES.txt'
running check
creating planarity-0.7.10
creating planarity-0.7.10/doc
creating planarity-0.7.10/doc/source
creating planarity-0.7.10/doc/source/reference
creating planarity-0.7.10/doc/sphinxext
creating planarity-0.7.10/examples
creating planarity-0.7.10/planarity
creating planarity-0.7.10/planarity.egg-info
creating planarity-0.7.10/planarity/c
creating planarity-0.7.10/planarity/c/graphLib
creating planarity-0.7.10/planarity/c/graphLib/extensionSystem
creating planarity-0.7.10/planarity/c/graphLib/homeomorphSearch
creating planarity-0.7.10/planarity/c/graphLib/io
creating planarity-0.7.10/planarity/c/graphLib/lowLevelUtils
creating planarity-0.7.10/planarity/c/graphLib/planarityRelated
creating planarity-0.7.10/planarity/classic
creating planarity-0.7.10/planarity/full
creating planarity-0.7.10/tests
copying files to planarity-0.7.10...
copying LICENSE.txt -> planarity-0.7.10
copying MANIFEST.in -> planarity-0.7.10
copying README.md -> planarity-0.7.10
copying pyproject.toml -> planarity-0.7.10
copying setup.py -> planarity-0.7.10
copying doc/Makefile -> planarity-0.7.10/doc
copying doc/source/conf.py -> planarity-0.7.10/doc/source
copying doc/source/index.rst -> planarity-0.7.10/doc/source
copying doc/source/reference/index.rst -> planarity-0.7.10/doc/source/reference
copying doc/sphinxext/LICENSE.txt -> planarity-0.7.10/doc/sphinxext
copying doc/sphinxext/docscrape.py -> planarity-0.7.10/doc/sphinxext
copying doc/sphinxext/docscrape_sphinx.py -> planarity-0.7.10/doc/sphinxext
copying doc/sphinxext/numpydoc.py -> planarity-0.7.10/doc/sphinxext
copying examples/ascii.py -> planarity-0.7.10/examples
copying examples/graph_formats.py -> planarity-0.7.10/examples
copying examples/kuratowski.py -> planarity-0.7.10/examples
copying examples/networkx_draw.py -> planarity-0.7.10/examples
copying examples/networkx_interface.py -> planarity-0.7.10/examples
copying examples/pgraph_class.py -> planarity-0.7.10/examples
copying examples/write_adjlist.py -> planarity-0.7.10/examples
copying planarity/__init__.py -> planarity-0.7.10/planarity
copying planarity.egg-info/PKG-INFO -> planarity-0.7.10/planarity.egg-info
copying planarity.egg-info/SOURCES.txt -> planarity-0.7.10/planarity.egg-info
copying planarity.egg-info/dependency_links.txt -> planarity-0.7.10/planarity.egg-info
copying planarity.egg-info/top_level.txt -> planarity-0.7.10/planarity.egg-info
copying planarity/c/LICENSE.TXT -> planarity-0.7.10/planarity/c
copying planarity/c/README -> planarity-0.7.10/planarity/c
copying planarity/c/graphLib/graphDFSUtils.c -> planarity-0.7.10/planarity/c/graphLib
copying planarity/c/graphLib/graphUtils.c -> planarity-0.7.10/planarity/c/graphLib
copying planarity/c/graphLib/extensionSystem/graphExtensions.c -> planarity-0.7.10/planarity/c/graphLib/extensionSystem
copying planarity/c/graphLib/homeomorphSearch/graphK23Search.c -> planarity-0.7.10/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/homeomorphSearch/graphK23Search_Extensions.c -> planarity-0.7.10/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/homeomorphSearch/graphK33Search.c -> planarity-0.7.10/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/homeomorphSearch/graphK33Search_Extensions.c -> planarity-0.7.10/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/homeomorphSearch/graphK4Search.c -> planarity-0.7.10/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/homeomorphSearch/graphK4Search_Extensions.c -> planarity-0.7.10/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/io/g6-api-utilities.c -> planarity-0.7.10/planarity/c/graphLib/io
copying planarity/c/graphLib/io/g6-read-iterator.c -> planarity-0.7.10/planarity/c/graphLib/io
copying planarity/c/graphLib/io/g6-write-iterator.c -> planarity-0.7.10/planarity/c/graphLib/io
copying planarity/c/graphLib/io/graphIO.c -> planarity-0.7.10/planarity/c/graphLib/io
copying planarity/c/graphLib/io/strOrFile.c -> planarity-0.7.10/planarity/c/graphLib/io
copying planarity/c/graphLib/io/strbuf.c -> planarity-0.7.10/planarity/c/graphLib/io
copying planarity/c/graphLib/lowLevelUtils/apiutils.c -> planarity-0.7.10/planarity/c/graphLib/lowLevelUtils
copying planarity/c/graphLib/lowLevelUtils/listcoll.c -> planarity-0.7.10/planarity/c/graphLib/lowLevelUtils
copying planarity/c/graphLib/lowLevelUtils/stack.c -> planarity-0.7.10/planarity/c/graphLib/lowLevelUtils
copying planarity/c/graphLib/planarityRelated/graphDrawPlanar.c -> planarity-0.7.10/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphDrawPlanar_Extensions.c -> planarity-0.7.10/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphEmbed.c -> planarity-0.7.10/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphIsolator.c -> planarity-0.7.10/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphNonplanar.c -> planarity-0.7.10/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphOuterplanarObstruction.c -> planarity-0.7.10/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphTests.c -> planarity-0.7.10/planarity/c/graphLib/planarityRelated
copying planarity/classic/__init__.py -> planarity-0.7.10/planarity/classic
copying planarity/classic/cplanarity.pxd -> planarity-0.7.10/planarity/classic
copying planarity/classic/planarity.c -> planarity-0.7.10/planarity/classic
copying planarity/classic/planarity.pyx -> planarity-0.7.10/planarity/classic
copying planarity/classic/planarity_functions.py -> planarity-0.7.10/planarity/classic
copying planarity/classic/planarity_networkx.py -> planarity-0.7.10/planarity/classic
copying planarity/full/__init__.py -> planarity-0.7.10/planarity/full
copying planarity/full/cappconst.pxd -> planarity-0.7.10/planarity/full
copying planarity/full/cg6IterationDefs.pxd -> planarity-0.7.10/planarity/full
copying planarity/full/cgraphLib.pxd -> planarity-0.7.10/planarity/full
copying planarity/full/g6IterationUtils.c -> planarity-0.7.10/planarity/full
copying planarity/full/g6IterationUtils.pyx -> planarity-0.7.10/planarity/full
copying planarity/full/graph.c -> planarity-0.7.10/planarity/full
copying planarity/full/graph.pyx -> planarity-0.7.10/planarity/full
copying planarity/full/planarity_app_utils.py -> planarity-0.7.10/planarity/full
copying tests/test_planarity.py -> planarity-0.7.10/tests
copying tests/test_planarity_networkx.py -> planarity-0.7.10/tests
copying planarity.egg-info/SOURCES.txt -> planarity-0.7.10/planarity.egg-info
Writing planarity-0.7.10/setup.cfg
Creating tar archive
removing 'planarity-0.7.10' (and everything under it)
* Building wheel from sdist
* Creating isolated environment: venv+pip...
* Installing packages in isolated environment:
  - cython
  - setuptools
* Getting build dependencies for wheel...
Compiling planarity/classic/planarity.pyx because it depends on /private/var/folders/t1/2kcfnw2902x6gjpfcq7l1r800000gn/T/build-env-i2tfdikt/lib/python3.14/site-packages/Cython/Includes/libc/stdlib.pxd.
[1/1] Cythonizing planarity/classic/planarity.pyx
running egg_info
writing planarity.egg-info/PKG-INFO
writing dependency_links to planarity.egg-info/dependency_links.txt
writing top-level names to planarity.egg-info/top_level.txt
reading manifest file 'planarity.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching '*.gz' under directory 'examples'
warning: no files found matching '*.html' 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 '.git' found anywhere in distribution
no previously-included directories found matching 'doc/build'
adding license file 'LICENSE.txt'
writing manifest file 'planarity.egg-info/SOURCES.txt'
* Building wheel...
running bdist_wheel
running build
running build_py
creating build/lib.macosx-10.15-universal2-cpython-314/planarity
copying planarity/__init__.py -> build/lib.macosx-10.15-universal2-cpython-314/planarity
creating build/lib.macosx-10.15-universal2-cpython-314/planarity/classic
copying planarity/classic/planarity_networkx.py -> build/lib.macosx-10.15-universal2-cpython-314/planarity/classic
copying planarity/classic/__init__.py -> build/lib.macosx-10.15-universal2-cpython-314/planarity/classic
copying planarity/classic/planarity_functions.py -> build/lib.macosx-10.15-universal2-cpython-314/planarity/classic
creating build/lib.macosx-10.15-universal2-cpython-314/planarity/full
copying planarity/full/__init__.py -> build/lib.macosx-10.15-universal2-cpython-314/planarity/full
copying planarity/full/planarity_app_utils.py -> build/lib.macosx-10.15-universal2-cpython-314/planarity/full
running build_ext
building 'planarity.classic.planarity' extension
creating build/temp.macosx-10.15-universal2-cpython-314/planarity/c/graphLib/extensionSystem
creating build/temp.macosx-10.15-universal2-cpython-314/planarity/c/graphLib/homeomorphSearch
creating build/temp.macosx-10.15-universal2-cpython-314/planarity/c/graphLib/io
creating build/temp.macosx-10.15-universal2-cpython-314/planarity/c/graphLib/lowLevelUtils
creating build/temp.macosx-10.15-universal2-cpython-314/planarity/c/graphLib/planarityRelated
creating build/temp.macosx-10.15-universal2-cpython-314/planarity/classic
clang -fno-strict-overflow -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -O3 -Wall -arch arm64 -arch x86_64 -I/opt/homebrew/opt/llvm/include -Iplanarity/c/graphLib -I/private/var/folders/t1/2kcfnw2902x6gjpfcq7l1r800000gn/T/build-env-i2tfdikt/include -I/Library/Frameworks/Python.framework/Versions/3.14/include/python3.14 -c planarity/c/graphLib/extensionSystem/graphExtensions.c -o build/temp.macosx-10.15-universal2-cpython-314/planarity/c/graphLib/extensionSystem/graphExtensions.o
planarity/c/graphLib/extensionSystem/graphExtensions.c:10:10: fatal error: '../lowLevelUtils/appconst.h' file not found
   10 | #include "../lowLevelUtils/appconst.h"
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
error: command '/opt/homebrew/opt/llvm/bin/clang' failed with exit code 1

ERROR Backend subprocess exited when trying to invoke build_wheel

6. If I use the flags python -m build --sdist, then only the source distribution is successfully built

Logs from python -m build --sdist

(.buildenv) wbkboyer@Wandas-MacBook-Pro planarity % python -m build --sdist
* Creating isolated environment: venv+pip...
* Installing packages in isolated environment:
  - cython
  - setuptools
* Getting build dependencies for sdist...
Compiling planarity/classic/planarity.pyx because it changed.
Compiling planarity/full/g6IterationUtils.pyx because it changed.
Compiling planarity/full/graph.pyx because it changed.
[1/3] Cythonizing planarity/classic/planarity.pyx
[2/3] Cythonizing planarity/full/g6IterationUtils.pyx
[3/3] Cythonizing planarity/full/graph.pyx
running egg_info
creating planarity.egg-info
writing planarity.egg-info/PKG-INFO
writing dependency_links to planarity.egg-info/dependency_links.txt
writing top-level names to planarity.egg-info/top_level.txt
writing manifest file 'planarity.egg-info/SOURCES.txt'
reading manifest file 'planarity.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching '*.gz' under directory 'examples'
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 '.git' found anywhere in distribution
adding license file 'LICENSE.txt'
writing manifest file 'planarity.egg-info/SOURCES.txt'
* Building sdist...
running sdist
running egg_info
writing planarity.egg-info/PKG-INFO
writing dependency_links to planarity.egg-info/dependency_links.txt
writing top-level names to planarity.egg-info/top_level.txt
reading manifest file 'planarity.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching '*.gz' under directory 'examples'
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 '.git' found anywhere in distribution
adding license file 'LICENSE.txt'
writing manifest file 'planarity.egg-info/SOURCES.txt'
running check
creating planarity-0.7.11
creating planarity-0.7.11/doc
creating planarity-0.7.11/doc/source
creating planarity-0.7.11/doc/source/reference
creating planarity-0.7.11/doc/sphinxext
creating planarity-0.7.11/examples/classic
creating planarity-0.7.11/examples/full
creating planarity-0.7.11/planarity
creating planarity-0.7.11/planarity.egg-info
creating planarity-0.7.11/planarity/c
creating planarity-0.7.11/planarity/c/graphLib
creating planarity-0.7.11/planarity/c/graphLib/extensionSystem
creating planarity-0.7.11/planarity/c/graphLib/homeomorphSearch
creating planarity-0.7.11/planarity/c/graphLib/io
creating planarity-0.7.11/planarity/c/graphLib/lowLevelUtils
creating planarity-0.7.11/planarity/c/graphLib/planarityRelated
creating planarity-0.7.11/planarity/classic
creating planarity-0.7.11/planarity/full
creating planarity-0.7.11/tests
copying files to planarity-0.7.11...
copying LICENSE.txt -> planarity-0.7.11
copying MANIFEST.in -> planarity-0.7.11
copying README.md -> planarity-0.7.11
copying pyproject.toml -> planarity-0.7.11
copying setup.py -> planarity-0.7.11
copying doc/Makefile -> planarity-0.7.11/doc
copying doc/source/conf.py -> planarity-0.7.11/doc/source
copying doc/source/index.rst -> planarity-0.7.11/doc/source
copying doc/source/reference/index.rst -> planarity-0.7.11/doc/source/reference
copying doc/sphinxext/LICENSE.txt -> planarity-0.7.11/doc/sphinxext
copying doc/sphinxext/docscrape.py -> planarity-0.7.11/doc/sphinxext
copying doc/sphinxext/docscrape_sphinx.py -> planarity-0.7.11/doc/sphinxext
copying doc/sphinxext/numpydoc.py -> planarity-0.7.11/doc/sphinxext
copying examples/classic/ascii.py -> planarity-0.7.11/examples/classic
copying examples/classic/graph_formats.py -> planarity-0.7.11/examples/classic
copying examples/classic/kuratowski.py -> planarity-0.7.11/examples/classic
copying examples/classic/networkx_draw.py -> planarity-0.7.11/examples/classic
copying examples/classic/networkx_interface.py -> planarity-0.7.11/examples/classic
copying examples/classic/pgraph_class.py -> planarity-0.7.11/examples/classic
copying examples/classic/write_adjlist.py -> planarity-0.7.11/examples/classic
copying examples/full/planarity_app_utils.py -> planarity-0.7.11/examples/full
copying examples/full/test_specific_graph.py -> planarity-0.7.11/examples/full
copying planarity/__init__.py -> planarity-0.7.11/planarity
copying planarity.egg-info/PKG-INFO -> planarity-0.7.11/planarity.egg-info
copying planarity.egg-info/SOURCES.txt -> planarity-0.7.11/planarity.egg-info
copying planarity.egg-info/dependency_links.txt -> planarity-0.7.11/planarity.egg-info
copying planarity.egg-info/top_level.txt -> planarity-0.7.11/planarity.egg-info
copying planarity/c/LICENSE.TXT -> planarity-0.7.11/planarity/c
copying planarity/c/README -> planarity-0.7.11/planarity/c
copying planarity/c/graphLib/graphDFSUtils.c -> planarity-0.7.11/planarity/c/graphLib
copying planarity/c/graphLib/graphUtils.c -> planarity-0.7.11/planarity/c/graphLib
copying planarity/c/graphLib/extensionSystem/graphExtensions.c -> planarity-0.7.11/planarity/c/graphLib/extensionSystem
copying planarity/c/graphLib/homeomorphSearch/graphK23Search.c -> planarity-0.7.11/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/homeomorphSearch/graphK23Search_Extensions.c -> planarity-0.7.11/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/homeomorphSearch/graphK33Search.c -> planarity-0.7.11/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/homeomorphSearch/graphK33Search_Extensions.c -> planarity-0.7.11/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/homeomorphSearch/graphK4Search.c -> planarity-0.7.11/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/homeomorphSearch/graphK4Search_Extensions.c -> planarity-0.7.11/planarity/c/graphLib/homeomorphSearch
copying planarity/c/graphLib/io/g6-api-utilities.c -> planarity-0.7.11/planarity/c/graphLib/io
copying planarity/c/graphLib/io/g6-read-iterator.c -> planarity-0.7.11/planarity/c/graphLib/io
copying planarity/c/graphLib/io/g6-write-iterator.c -> planarity-0.7.11/planarity/c/graphLib/io
copying planarity/c/graphLib/io/graphIO.c -> planarity-0.7.11/planarity/c/graphLib/io
copying planarity/c/graphLib/io/strOrFile.c -> planarity-0.7.11/planarity/c/graphLib/io
copying planarity/c/graphLib/io/strbuf.c -> planarity-0.7.11/planarity/c/graphLib/io
copying planarity/c/graphLib/lowLevelUtils/apiutils.c -> planarity-0.7.11/planarity/c/graphLib/lowLevelUtils
copying planarity/c/graphLib/lowLevelUtils/listcoll.c -> planarity-0.7.11/planarity/c/graphLib/lowLevelUtils
copying planarity/c/graphLib/lowLevelUtils/stack.c -> planarity-0.7.11/planarity/c/graphLib/lowLevelUtils
copying planarity/c/graphLib/planarityRelated/graphDrawPlanar.c -> planarity-0.7.11/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphDrawPlanar_Extensions.c -> planarity-0.7.11/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphEmbed.c -> planarity-0.7.11/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphIsolator.c -> planarity-0.7.11/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphNonplanar.c -> planarity-0.7.11/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphOuterplanarObstruction.c -> planarity-0.7.11/planarity/c/graphLib/planarityRelated
copying planarity/c/graphLib/planarityRelated/graphTests.c -> planarity-0.7.11/planarity/c/graphLib/planarityRelated
copying planarity/classic/__init__.py -> planarity-0.7.11/planarity/classic
copying planarity/classic/cplanarity.pxd -> planarity-0.7.11/planarity/classic
copying planarity/classic/planarity.c -> planarity-0.7.11/planarity/classic
copying planarity/classic/planarity.pyx -> planarity-0.7.11/planarity/classic
copying planarity/classic/planarity_functions.py -> planarity-0.7.11/planarity/classic
copying planarity/classic/planarity_networkx.py -> planarity-0.7.11/planarity/classic
copying planarity/full/__init__.py -> planarity-0.7.11/planarity/full
copying planarity/full/cappconst.pxd -> planarity-0.7.11/planarity/full
copying planarity/full/cg6IterationDefs.pxd -> planarity-0.7.11/planarity/full
copying planarity/full/cgraphLib.pxd -> planarity-0.7.11/planarity/full
copying planarity/full/g6IterationUtils.c -> planarity-0.7.11/planarity/full
copying planarity/full/g6IterationUtils.pyx -> planarity-0.7.11/planarity/full
copying planarity/full/graph.c -> planarity-0.7.11/planarity/full
copying planarity/full/graph.pyx -> planarity-0.7.11/planarity/full
copying tests/test_planarity.py -> planarity-0.7.11/tests
copying tests/test_planarity_networkx.py -> planarity-0.7.11/tests
copying planarity.egg-info/SOURCES.txt -> planarity-0.7.11/planarity.egg-info
Writing planarity-0.7.11/setup.cfg
Creating tar archive
removing 'planarity-0.7.11' (and everything under it)
Successfully built planarity-0.7.11.tar.gz

7. If I use the flags python -m build --sdist --wheel, then both the source distribution and wheel are built

python-build_sdist-wheel.txt

8. Publishing the source distribution only to TestPyPI and then installing to a fresh virtual environment succeeds, and examples/ + test_all_graphs.py + edge_deletion_analysis.py all work (see the bottom of the description of Issue #37 - Update planarity/c/graphLib/ contents + corresponding .pxd definition files + .pyx Cython source files in preparation for EAPS 4.0.2 release #38)

Expected behaviour

I expected to see the same output as was documented in this comment on #28 , i.e. Successfully built planarity-XXX.XXX.XXX.tar.gz and planarity-XXX.XXX.XXX-cp314-cp314-macosx_10_15_universal2.whl since I'm running this on MacOS.

Environment

• OS: MacOS 26.3.1 (a) (25D771280a)
• Python Version: Python 3.14.2

[wbkboyer]

Gadzooks, I think I figured this one out!!! While undertaking #50 , I realized I had to refactor the whole planarity.full subpackage so that we'd have a shared memory space (i.e. create graphLib.pyx module to directly wrap the C library via definitions exposed by cgraphLib.pxd, then create graphLib.pxd so that the graph.pyx and g6IterationUtils.pyx modules would be able to call these functions (i.e. group related functionality in Cython class)). Then, when I went to build using python -m build, I realized that I hadn't added graphLib.pyx to the Manifest.in file (among others). After updating the Manifest.in file, I now am able to successfully build the source distribution and wheel on MacOS!!

Logs from successful build

wbkboyer@Wandas-MacBook-Pro planarity % python3.14 -m venv .buildenv
wbkboyer@Wandas-MacBook-Pro planarity % source .buildenv/bin/activate
(.buildenv) wbkboyer@Wandas-MacBook-Pro planarity % pip install --upgrade pip
...
Successfully installed pip-26.1.1
(.buildenv) wbkboyer@Wandas-MacBook-Pro planarity % pip install -r requirements.txt 
...
Successfully installed build-1.5.0 certifi-2026.5.20 charset_normalizer-3.4.7 contourpy-1.3.3 cycler-0.12.1 cython-3.2.5 docutils-0.22.4 fonttools-4.63.0 id-1.6.1 idna-3.16 iniconfig-2.3.0 jaraco.classes-3.4.0 jaraco.context-6.1.2 jaraco.functools-4.5.0 keyring-25.7.0 kiwisolver-1.5.0 markdown-it-py-4.2.0 matplotlib-3.10.9 mdurl-0.1.2 more-itertools-11.1.0 networkx-3.6.1 nh3-0.3.5 numpy-2.4.6 packaging-26.2 pillow-12.2.0 pluggy-1.6.0 pygments-2.20.0 pyparsing-3.3.2 pyproject_hooks-1.2.0 pytest-9.0.3 python-dateutil-2.9.0.post0 readme-renderer-44.0 requests-2.34.2 requests-toolbelt-1.0.0 rfc3986-2.0.0 rich-15.0.0 setuptools-82.0.1 six-1.17.0 twine-6.2.0 urllib3-2.7.0 wheel-0.47.0
(.buildenv) wbkboyer@Wandas-MacBook-Pro planarity % python -m build -vvv   
* Creating isolated environment: venv+pip...
* Installing packages in isolated environment:
  - cython
  - setuptools
...
* Getting build dependencies for wheel...
Compiling planarity/classic/planarity.pyx because it depends on /private/var/folders/t1/2kcfnw2902x6gjpfcq7l1r800000gn/T/build-env-jn6f0fc_/lib/python3.14/site-packages/Cython/Includes/libc/stdlib.pxd.
Compiling planarity/full/graph.pyx because it depends on /private/var/folders/t1/2kcfnw2902x6gjpfcq7l1r800000gn/T/build-env-jn6f0fc_/lib/python3.14/site-packages/Cython/Includes/libc/stdlib.pxd.
[1/2] Cythonizing planarity/classic/planarity.pyx
[2/2] Cythonizing planarity/full/graph.pyx
running egg_info
writing planarity.egg-info/PKG-INFO
writing dependency_links to planarity.egg-info/dependency_links.txt
writing top-level names to planarity.egg-info/top_level.txt
reading manifest file 'planarity.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching '*.gz' under directory 'examples'
warning: no files found matching '*.html' 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 '.git' found anywhere in distribution
no previously-included directories found matching 'doc/build'
adding license file 'LICENSE.txt'
writing manifest file 'planarity.egg-info/SOURCES.txt'
* Building wheel...
running bdist_wheel
running build
running build_py
creating build/lib.macosx-10.15-universal2-cpython-314/planarity
copying planarity/__init__.py -> build/lib.macosx-10.15-universal2-cpython-314/planarity
creating build/lib.macosx-10.15-universal2-cpython-314/planarity/classic
copying planarity/classic/planarity_networkx.py -> build/lib.macosx-10.15-universal2-cpython-314/planarity/classic
copying planarity/classic/__init__.py -> build/lib.macosx-10.15-universal2-cpython-314/planarity/classic
copying planarity/classic/planarity_functions.py -> build/lib.macosx-10.15-universal2-cpython-314/planarity/classic
creating build/lib.macosx-10.15-universal2-cpython-314/planarity/full
copying planarity/full/__init__.py -> build/lib.macosx-10.15-universal2-cpython-314/planarity/full
running build_ext
building 'planarity.classic.planarity' extension
creating build/temp.macosx-10.15-universal2-cpython-314/planarity/c/graphLib/extensionSystem
creating build/temp.macosx-10.15-universal2-cpython-314/planarity/c/graphLib/homeomorphSearch
creating build/temp.macosx-10.15-universal2-cpython-314/planarity/c/graphLib/io
creating build/temp.macosx-10.15-universal2-cpython-314/planarity/c/graphLib/lowLevelUtils
creating build/temp.macosx-10.15-universal2-cpython-314/planarity/c/graphLib/planarityRelated
creating build/temp.macosx-10.15-universal2-cpython-314/planarity/classic
...
installing to build/bdist.macosx-10.15-universal2/wheel
running install
running install_lib
creating build/bdist.macosx-10.15-universal2/wheel
creating build/bdist.macosx-10.15-universal2/wheel/planarity
creating build/bdist.macosx-10.15-universal2/wheel/planarity/full
copying build/lib.macosx-10.15-universal2-cpython-314/planarity/full/__init__.py -> build/bdist.macosx-10.15-universal2/wheel/./planarity/full
copying build/lib.macosx-10.15-universal2-cpython-314/planarity/full/g6IterationUtils.cpython-314-darwin.so -> build/bdist.macosx-10.15-universal2/wheel/./planarity/full
copying build/lib.macosx-10.15-universal2-cpython-314/planarity/full/graphLib.cpython-314-darwin.so -> build/bdist.macosx-10.15-universal2/wheel/./planarity/full
copying build/lib.macosx-10.15-universal2-cpython-314/planarity/full/graph.cpython-314-darwin.so -> build/bdist.macosx-10.15-universal2/wheel/./planarity/full
creating build/bdist.macosx-10.15-universal2/wheel/planarity/classic
copying build/lib.macosx-10.15-universal2-cpython-314/planarity/classic/planarity.cpython-314-darwin.so -> build/bdist.macosx-10.15-universal2/wheel/./planarity/classic
copying build/lib.macosx-10.15-universal2-cpython-314/planarity/classic/planarity_networkx.py -> build/bdist.macosx-10.15-universal2/wheel/./planarity/classic
copying build/lib.macosx-10.15-universal2-cpython-314/planarity/classic/__init__.py -> build/bdist.macosx-10.15-universal2/wheel/./planarity/classic
copying build/lib.macosx-10.15-universal2-cpython-314/planarity/classic/planarity_functions.py -> build/bdist.macosx-10.15-universal2/wheel/./planarity/classic
copying build/lib.macosx-10.15-universal2-cpython-314/planarity/__init__.py -> build/bdist.macosx-10.15-universal2/wheel/./planarity
running install_egg_info
running egg_info
writing planarity.egg-info/PKG-INFO
writing dependency_links to planarity.egg-info/dependency_links.txt
writing top-level names to planarity.egg-info/top_level.txt
reading manifest file 'planarity.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching '*.gz' under directory 'examples'
warning: no files found matching '*.html' 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 '.git' found anywhere in distribution
no previously-included directories found matching 'doc/build'
adding license file 'LICENSE.txt'
writing manifest file 'planarity.egg-info/SOURCES.txt'
Copying planarity.egg-info to build/bdist.macosx-10.15-universal2/wheel/./planarity-0.7.15-py3.14.egg-info
running install_scripts
creating build/bdist.macosx-10.15-universal2/wheel/planarity-0.7.15.dist-info/WHEEL
creating '/Users/wbkboyer/git/planarity/dist/.tmp-ln4ospde/planarity-0.7.15-cp314-cp314-macosx_10_15_universal2.whl' and adding 'build/bdist.macosx-10.15-universal2/wheel' to it
adding 'planarity/__init__.py'
adding 'planarity/classic/__init__.py'
adding 'planarity/classic/planarity.cpython-314-darwin.so'
adding 'planarity/classic/planarity_functions.py'
adding 'planarity/classic/planarity_networkx.py'
adding 'planarity/full/__init__.py'
adding 'planarity/full/g6IterationUtils.cpython-314-darwin.so'
adding 'planarity/full/graph.cpython-314-darwin.so'
adding 'planarity/full/graphLib.cpython-314-darwin.so'
adding 'planarity-0.7.15.dist-info/licenses/LICENSE.txt'
adding 'planarity-0.7.15.dist-info/METADATA'
adding 'planarity-0.7.15.dist-info/WHEEL'
adding 'planarity-0.7.15.dist-info/top_level.txt'
adding 'planarity-0.7.15.dist-info/RECORD'
removing build/bdist.macosx-10.15-universal2/wheel
Successfully built planarity-0.7.15.tar.gz and planarity-0.7.15-cp314-cp314-macosx_10_15_universal2.whl

[wbkboyer]

Testing in a new virtual environment using Python 3.14.2 on my Macbook (Tahoe 26.5, clang 22.1.4), I was able to install from the source distribution pushed up to TestPyPI:

(.testenv) wbkboyer@Wandas-MacBook-Pro planarity % python -m pip install --index-url https://test.pypi.org/simple/ --no-deps --no-build-isolation planarity
Looking in indexes: https://test.pypi.org/simple/
Collecting planarity
  Downloading planarity-0.7.15.tar.gz (555 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 555.7/555.7 kB 8.9 MB/s  0:00:00
  Preparing metadata (pyproject.toml) ... done
Building wheels for collected packages: planarity
  Building wheel for planarity (pyproject.toml) ... done
  Created wheel for planarity: filename=planarity-0.7.15-cp314-cp314-macosx_10_15_universal2.whl size=575363 sha256=f8a9d3f4e56fed959546365fe5444a30a8b8d1eb96eefa6d49616e0056ab8d13
  Stored in directory: /Users/wbkboyer/Library/Caches/pip/wheels/c5/29/11/de9b747702abf416a71ca882ec6b99f18dc666be1c01e786fe
Successfully built planarity
Installing collected packages: planarity
Successfully installed planarity-0.7.15

And confirmed the test_quiet_mode.py for #50 :

(.testenv) wbkboyer@Wandas-MacBook-Pro ~ % python git/planarity/examples/full/test_quiet_mode.py 
==================================================

Traceback (most recent call last):
  File "/Users/wbkboyer/git/planarity/examples/full/test_quiet_mode.py", line 28, in <module>
    reader.g6_InitReaderWithFileName(filename)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
  File "planarity/full/g6IterationUtils.pyx", line 50, in planarity.full.g6IterationUtils.G6ReadIterator.g6_InitReaderWithFileName
RuntimeError: Unable to initialize reader with filename, as g6_InitReaderWithFileName() in EAPS graphLib failed.

==================================================

Unable to initialize reader with filename, as we failed to allocate the inputContainer. <-- THIS IS THE gp_ErrorMessage() WE'RE LOOKING FOR AFTER DISABLING QUIET MODE
Traceback (most recent call last):
  File "/Users/wbkboyer/git/planarity/examples/full/test_quiet_mode.py", line 39, in <module>
    reader.g6_InitReaderWithFileName(filename)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
  File "planarity/full/g6IterationUtils.pyx", line 50, in planarity.full.g6IterationUtils.G6ReadIterator.g6_InitReaderWithFileName
RuntimeError: Unable to initialize reader with filename, as g6_InitReaderWithFileName() in EAPS graphLib failed.

Also confirmed the pytest tests pass with this package installed from TestPyPI:

(.testenv) wbkboyer@Wandas-MacBook-Pro ~ % pytest git/planarity/ -vvv     
================================================= test session starts =================================================
platform darwin -- Python 3.14.2, pytest-9.0.3, pluggy-1.6.0 -- /Users/wbkboyer/git/planarity/.testenv/bin/python3.14
cachedir: .pytest_cache
rootdir: /Users/wbkboyer/git/planarity
configfile: pyproject.toml
collected 19 items                                                                                                    

git/planarity/tests/test_planarity.py::TestPlanarity::test_is_planar_edgelist_input PASSED                      [  5%]
git/planarity/tests/test_planarity.py::TestPlanarity::test_is_planar_edgelist_input_function PASSED             [ 10%]
git/planarity/tests/test_planarity.py::TestPlanarity::test_is_planar_adj_input PASSED                           [ 15%]
git/planarity/tests/test_planarity.py::TestPlanarity::test_is_planar_adj_input_function PASSED                  [ 21%]
git/planarity/tests/test_planarity.py::TestPlanarity::test_is_planar_adj_symmetric PASSED                       [ 26%]
git/planarity/tests/test_planarity.py::TestPlanarity::test_is_planar_adj_set PASSED                             [ 31%]
git/planarity/tests/test_planarity.py::TestPlanarity::test_is_planar_adj_list PASSED                            [ 36%]
git/planarity/tests/test_planarity.py::TestPlanarity::test_goldner_harary PASSED                                [ 42%]
git/planarity/tests/test_planarity.py::TestPlanarity::test_kuratowski_k5 PASSED                                 [ 47%]
git/planarity/tests/test_planarity.py::TestPlanarity::test_kuratowski_k5_function PASSED                        [ 52%]
git/planarity/tests/test_planarity.py::TestPlanarity::test_no_kuratowski_k5m PASSED                             [ 57%]
git/planarity/tests/test_planarity.py::TestPlanarity::test_draw_text PASSED                                     [ 63%]
git/planarity/tests/test_planarity.py::TestPlanarity::test_write_adjlist PASSED                                 [ 68%]
git/planarity/tests/test_planarity_networkx.py::TestPlanarityNetworkX::test_is_planar PASSED                    [ 73%]
git/planarity/tests/test_planarity_networkx.py::TestPlanarityNetworkX::test_is_planar_unions PASSED             [ 78%]
git/planarity/tests/test_planarity_networkx.py::TestPlanarityNetworkX::test_goldner_harary PASSED               [ 84%]
git/planarity/tests/test_planarity_networkx.py::TestPlanarityNetworkX::test_kuratowski_k5 PASSED                [ 89%]
git/planarity/tests/test_planarity_networkx.py::TestPlanarityNetworkX::test_kuratowski_k5m PASSED               [ 94%]
git/planarity/tests/test_planarity_networkx.py::TestPlanarityNetworkX::test_networkx_graph PASSED               [100%]

================================================= 19 passed in 0.10s ==================================================

---

Also verified in a Python 3.14.3 virtual environment on Windows (10 Home 22H2 19045.7291), the install is successful (uses MSVC cl by default):

(.testenv) C:\Users\wbkbo>py -m pip install --index-url https://test.pypi.org/simple/ --no-deps --no-build-isolation planarity
Looking in indexes: https://test.pypi.org/simple/
Collecting planarity
  Using cached planarity-0.7.15.tar.gz (555 kB)
  Preparing metadata (pyproject.toml) ... done
Building wheels for collected packages: planarity
  Building wheel for planarity (pyproject.toml) ... done
  Created wheel for planarity: filename=planarity-0.7.15-cp314-cp314-win_amd64.whl size=211123 sha256=c83844416038326fb2ed58789716b0b9e5f05fc1cb891a603f57824a5208aacd
  Stored in directory: c:\users\wbkbo\appdata\local\pip\cache\wheels\c5\29\11\de9b747702abf416a71ca882ec6b99f18dc666be1c01e786fe
Successfully built planarity
Installing collected packages: planarity
Successfully installed planarity-0.7.15

And again confirmed successful run of test_quiet_mode.py:

(.testenv) C:\Users\wbkbo>py git\planarity\examples\full\test_quiet_mode.py
==================================================

Traceback (most recent call last):
  File "C:\Users\wbkbo\git\planarity\examples\full\test_quiet_mode.py", line 28, in <module>
    reader.g6_InitReaderWithFileName(filename)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
  File "planarity/full/g6IterationUtils.pyx", line 50, in planarity.full.g6IterationUtils.G6ReadIterator.g6_InitReaderWithFileName
RuntimeError: Unable to initialize reader with filename, as g6_InitReaderWithFileName() in EAPS graphLib failed.

==================================================

Unable to initialize reader with filename, as we failed to allocate the inputContainer.
Traceback (most recent call last):
  File "C:\Users\wbkbo\git\planarity\examples\full\test_quiet_mode.py", line 39, in <module>
    reader.g6_InitReaderWithFileName(filename)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
  File "planarity/full/g6IterationUtils.pyx", line 50, in planarity.full.g6IterationUtils.G6ReadIterator.g6_InitReaderWithFileName
RuntimeError: Unable to initialize reader with filename, as g6_InitReaderWithFileName() in EAPS graphLib failed.

As well as the pytest tests:

(.testenv) C:\Users\wbkbo>pytest git\planarity\ -vvv
================================================= test session starts =================================================
platform win32 -- Python 3.14.3, pytest-9.0.3, pluggy-1.6.0 -- C:\Users\wbkbo\.testenv\Scripts\python.exe
cachedir: .pytest_cache
rootdir: C:\Users\wbkbo\git\planarity
configfile: pyproject.toml
collected 19 items

git\planarity\tests\test_planarity.py::TestPlanarity::test_is_planar_edgelist_input PASSED                       [  5%]
git\planarity\tests\test_planarity.py::TestPlanarity::test_is_planar_edgelist_input_function PASSED              [ 10%]
git\planarity\tests\test_planarity.py::TestPlanarity::test_is_planar_adj_input PASSED                            [ 15%]
git\planarity\tests\test_planarity.py::TestPlanarity::test_is_planar_adj_input_function PASSED                   [ 21%]
git\planarity\tests\test_planarity.py::TestPlanarity::test_is_planar_adj_symmetric PASSED                        [ 26%]
git\planarity\tests\test_planarity.py::TestPlanarity::test_is_planar_adj_set PASSED                              [ 31%]
git\planarity\tests\test_planarity.py::TestPlanarity::test_is_planar_adj_list PASSED                             [ 36%]
git\planarity\tests\test_planarity.py::TestPlanarity::test_goldner_harary PASSED                                 [ 42%]
git\planarity\tests\test_planarity.py::TestPlanarity::test_kuratowski_k5 PASSED                                  [ 47%]
git\planarity\tests\test_planarity.py::TestPlanarity::test_kuratowski_k5_function PASSED                         [ 52%]
git\planarity\tests\test_planarity.py::TestPlanarity::test_no_kuratowski_k5m PASSED                              [ 57%]
git\planarity\tests\test_planarity.py::TestPlanarity::test_draw_text PASSED                                      [ 63%]
git\planarity\tests\test_planarity.py::TestPlanarity::test_write_adjlist PASSED                                  [ 68%]
git\planarity\tests\test_planarity_networkx.py::TestPlanarityNetworkX::test_is_planar PASSED                     [ 73%]
git\planarity\tests\test_planarity_networkx.py::TestPlanarityNetworkX::test_is_planar_unions PASSED              [ 78%]
git\planarity\tests\test_planarity_networkx.py::TestPlanarityNetworkX::test_goldner_harary PASSED                [ 84%]
git\planarity\tests\test_planarity_networkx.py::TestPlanarityNetworkX::test_kuratowski_k5 PASSED                 [ 89%]
git\planarity\tests\test_planarity_networkx.py::TestPlanarityNetworkX::test_kuratowski_k5m PASSED                [ 94%]
git\planarity\tests\test_planarity_networkx.py::TestPlanarityNetworkX::test_networkx_graph PASSED                [100%]

================================================= 19 passed in 0.33s ==================================================

[wbkboyer]

Confirmed with latest commits to #50 :

wbkboyer@Wandas-MacBook-Pro planarity % source .buildenv/bin/activate
(.buildenv) wbkboyer@Wandas-MacBook-Pro planarity % python -m build
...
Successfully built planarity-0.7.16.tar.gz and planarity-0.7.16-cp314-cp314-macosx_10_15_universal2.whl
(.buildenv) wbkboyer@Wandas-MacBook-Pro planarity % python -m twine upload --repository testpypi dist/planarity-0.7.16.tar.gz
...
(.buildenv) wbkboyer@Wandas-MacBook-Pro planarity % deactivate
wbkboyer@Wandas-MacBook-Pro planarity % source .testenv/bin/activate
(.testenv) wbkboyer@Wandas-MacBook-Pro planarity % python -m pip install --index-url https://test.pypi.org/simple/ --no-deps --no-build-isolation planarity==0.7.16
Looking in indexes: https://test.pypi.org/simple/
Collecting planarity==0.7.16
...
Successfully installed planarity-0.7.16
(.testenv) wbkboyer@Wandas-MacBook-Pro planarity % python examples/full/test_quiet_mode.py 
Trying to init reader with nonexistent file 'DOES_NOT_EXIST.g6'.
	gp_ErroMessage() MUST NOT appear before stacktrace, as  quietModeFlag is TRUE:
-------------------------
-------------------------
Traceback (most recent call last):
  File "/Users/wbkboyer/git/planarity/examples/full/test_quiet_mode.py", line 52, in <module>
    reader.g6_InitReaderWithFileName(filename)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
  File "planarity/full/g6IterationUtils.pyx", line 50, in planarity.full.g6IterationUtils.G6ReadIterator.g6_InitReaderWithFileName
    raise RuntimeError(
RuntimeError: Unable to initialize reader with filename, as g6_InitReaderWithFileName() in EAPS graphLib failed.

==================================================

Trying to init reader with nonexistent file 'DOES_NOT_EXIST.g6'.
	gp_ErroMessage() MUST appear before stacktrace, as quietModeFlag is FALSE:
-------------------------
Unable to initialize reader with filename, as we failed to allocate the inputContainer.
-------------------------
Traceback (most recent call last):
  File "/Users/wbkboyer/git/planarity/examples/full/test_quiet_mode.py", line 69, in <module>
    reader.g6_InitReaderWithFileName(filename)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
  File "planarity/full/g6IterationUtils.pyx", line 50, in planarity.full.g6IterationUtils.G6ReadIterator.g6_InitReaderWithFileName
    raise RuntimeError(
RuntimeError: Unable to initialize reader with filename, as g6_InitReaderWithFileName() in EAPS graphLib failed.
(.testenv) wbkboyer@Wandas-MacBook-Pro planarity % pytest
=========================================================== test session starts ===========================================================
platform darwin -- Python 3.14.2, pytest-9.0.3, pluggy-1.6.0
rootdir: /Users/wbkboyer/git/planarity
configfile: pyproject.toml
collected 19 items                                                                                                                        

tests/test_planarity.py .............                                                                                               [ 68%]
tests/test_planarity_networkx.py ......                                                                                             [100%]

=========================================================== 19 passed in 0.12s ============================================================