Source: matplotlib Version: 3.6.3-2 Severity: normal Control: forwarded -1 https://github.com/matplotlib/matplotlib/issues/26827
I'm trying to reinstate python-matplotlib-doc. The doc build essentially works. But final doc build is blocked by circular dependencies and upstream Issue#26827. The confounding circular dependency is that python3-sphinx-gallery Depends on python-matplotlib, but is needed to build docs for matplotlib (it was previously handled as `<!stage1>` in the debian build scripts). In matplotlib 3.8.0, mpl_toolkits/__init__.py was removed to make mpl_toolkits a "namespace package", https://github.com/matplotlib/matplotlib/pull/25381 As side effect, it is no longer possible (that is, I have not found a solution) to import mpl_toolkits from a local dir (i.e. the new 3.8.0 build). It is possible to manipulate sys.path to get the local path listed before the system path, e.g. with a sitecustomize.py file. But import mpl_toolkits or import mpl_toolkits.mplot3d always finds the system version rather than the new version, and therefore the component of matplotlib using it (projections/__init__.py) fails with the error message /build/matplotlib/.pybuild/cpython3_3.11/build/matplotlib/projections/__init__.py:63: UserWarning: Unable to import Axes3D. This may be due to multiple versions of Matplotlib being installed (e.g. as a system package and as a pip package). As a result, the 3D projection is not available. warnings.warn("Unable to import Axes3D. This may be due to multiple versions of " The suggestion in upstream Issue#26827 to create a dummy mpl_toolkits/__init__.py does not fix the problem.
