On Wed, 18 Aug 2021 at 19:51, Miro Hrončok <mhron...@redhat.com> wrote:
>
> On 18. 08. 21 11:09, Elliott Sales de Andrade wrote:
> > I've been experimenting with the new macros for Python packages, and
> > ran into some issues building Sphinx docs for compiled extensions.
> >
> > When building docs, one usually has to be able to import the project.
> > When the project uses compiled extensions, it is not sufficient to
> > point to the original unpacked sources, but instead must point to the
> > built ones. However, since the new %pyprojec_wheel creates a wheel, I
> > don't know how to do this properly.
> >
> > Setting e.g., PYTHONPATH=/path/to/*.whl doesn't seem to work (it seems
> > to load everything else but the shared library):
> >
> > + pushd docs
> > ~/build/BUILD/pikepdf-2.16.1/docs ~/build/BUILD/pikepdf-2.16.1
> > ++ ls
> > /builddir/build/BUILD/pikepdf-2.16.1/docs/../pyproject-wheeldir/pikepdf-2.16.1-cp310-cp310-linux_x86_64.whl
> > +
> > PYTHONPATH=/builddir/build/BUILD/pikepdf-2.16.1/docs/../pyproject-wheeldir/pikepdf-2.16.1-cp310-cp310-linux_x86_64.whl
> > + sphinx-build-3 . ../html
> > Running Sphinx v4.1.2
> >
> > ...
> > ImportError: pikepdf's extension library failed to import
>
> I've run into this in the past as well. I am not yet sure if putting a whl
> file
> with extension modules on PYTHONPATH should work or not, but it doesn't.
>
> You should be able to build the docs in %install, after installing the wheel
> by
> putting %{buildroot}%{python3_sitearch} to PYTHONPATH. It is a bit weird, but
> it worked for me in the past.
>
It is a bit weird, at least by definition of the stages.
> If that is not desired or working, you can find the built extension in
> %{_pyproject_builddir}/pip-req-build-*/build/lib.%{python3_platform}-%{python3_version}/
>
That also does work, if a bit undocumented.
It seems that pip may be changing to in-tree builds?
https://github.com/pypa/pip/issues/7555
Are we moving towards that as well? It seems like that would make it
simpler to build the docs for cases like this.
> --
> Miro Hrončok
> --
> Phone: +420777974800
> IRC: mhroncok
>
--
Elliott
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