Hi Ian, > Since this merge landed, the builds for several Python packages in my > personal channel broke. Any package using pyproject-build-system for a > Python project using setuptools seems to be affected.
as Sharlatan Hellseher wrote in https://issues.guix.gnu.org/issue/74715#4, you need to add python-setuptools and python-wheel to your setuptools-based packages. The default python toolchain used by pyproject-build-system (python-sans-pip-wrapper from gnu/packages/python.scm) does not include these packages any more, since they are technically not required and declaring them as *real* inputs allows using different versions of these packages more easily for packages, which require them. Plus there are quite a few packages, which build using different build systems nowadays. The python importer should probably be updated to read pyproject.toml and parse the [build-system] table (there is a toml parser in Guix now, so this should be easy). Lars
