Re: pybuild pyproject.toml problem

[Scott Talbert <swt@techie.net>]

On Thu, 11 Aug 2022, Ole Streicher wrote:

> Hi,
>
> I have a package
>
> https://salsa.debian.org/debian-astro-team/asdf-standard
>
> that changed its build process to pyproject.toml. As hinted by pybuild,
> I added pybuild-plugin-pyproject to the build dependencies; however it
> still does not build properly. The build fails with the following
> output:
>
> -------------------------------8<-----------------------------------
> * Building wheel...
> Successfully built UNKNOWN-1.0.3-py3-none-any.whl
> I: pybuild plugin_pyproject:118: Unpacking wheel built for python3.10 with "installer" module
> E: pybuild pybuild:369: build: plugin pyproject failed with: UNKNOWN wheel found: UNKNOWN-1.0.3-py3-none-any.whl. Does pyproject.toml specify a build-backend?
> dh_auto_build: error: pybuild --build -i python{version} -p 3.10 returned exit code 13
> make: *** [debian/rules:5: binary] Error 25
> -------------------------------8<-----------------------------------
>
> which I do not understand. The build backend specified in pyproject.toml is
>
> build-backend = "setuptools.build_meta"
>
> What goes wrong here?
>
> Full build log:
>
> https://salsa.debian.org/debian-astro-team/asdf-standard/-/jobs/3095942

I *think* the issue might be that our setuptools is too old to understand 
how to get project metadata from pyproject.toml (PEP 621).  This seems to 
indicate that it was added in setuptools 61.0.0:

https://setuptools.pypa.io/en/latest/userguide/pyproject_config.html

As a workaround, you might try to patch the metadata back into setup.cfg?

Scott