pyproject RPM macros

This is a provisional implementation of pyproject RPM macros for Fedora 30+.

These macros are useful for packaging Python projects that use the PEP 517 pyproject.toml file, which specifies the package's build dependencies (including the build system, such as setuptools, flit or poetry).

Usage

If your upstream sources include pyproject.toml and you want to use these macros, BuildRequire them:

BuildRequires: pyproject-rpm-macros

This will bring in python3-devel, so you don't need to require python3-devel explicitly.

In order to get automatic build dependencies on Fedora 31+, run %pyproject_buildrequires in the %generate_buildrequires section:

%generate_buildrequires
%pyproject_buildrequires

Only build dependencies according to PEP 517 and PEP 518 will be added. All other build dependencies (such as non-Python libraries or test dependencies) still need to be specified manually.

Then, build a wheel in %build with %pyproject_wheel:

%build
%pyproject_wheel

And install the wheel in %install with %pyproject_install:

%install
%pyproject_install

Limitations

%pyproject_install currently installs all wheels in $PWD. We are working on a more explicit solution.

This macro changes shebang lines of every Python script in %{buildroot}%{_bindir} to #! %{__python3} %{py3_shbang_opt} (#! /usr/bin/python3 -s). We plan to preserve existing Python flags in shebangs, but the work is not yet finished.

The PEPs don't (yet) define a way to specify test dependencies and test runners. That means you still need to handle test dependencies and %check on your own.