Re: RPM 4.19: Dynamic subpackages with Python extras

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On 30. 03. 23 23:55, Miro Hrončok wrote:
Hello Python packagers.

RPM 4.19 introduces this feature:

https://rpm-software-management.github.io/rpm/manual/dynamic_specs.html

I decided to write this email to gather my thoughts. I believe that with this, we can turn manual Python extras subpackages like this:

   %package -n python3-...
   Summary:        %{summary}

   %description -n python3-... %_description

   %pyproject_extras_subpkg -n python3-xxx extra1 extra2

(See https://docs.fedoraproject.org/en-US/packaging-guidelines/Python/#Extras for what that means.)

Into something like this:

   %package -n python3-...
   Summary:        %{summary}

   %description -n python3-... %_description
   ...

   %install
   %pyproject_install
   ...
   %pyproject_generate_extras_subpkgs -n python3-xxx


The %pyproject_generate_extras_subpkgs macro would parse the installed .dist-info directory to find out what extras are available and generate subpackages for all of them.

One challenge: When an extra is removed upstream, the packager might not notice that it needs to be provided/obsoleted/etc.

--
Miro Hrončok
--
Phone: +420777974800
IRC: mhroncok
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