Sourcing python-remove-tests-dir-hook
Sourcing python-catch-conflicts-hook.sh
Sourcing python-remove-bin-bytecode-hook.sh
Sourcing pypa-build-hook
Using pypaBuildPhase
Sourcing python-runtime-deps-check-hook
Using pythonRuntimeDepsCheckHook
Sourcing pypa-install-hook
Using pypaInstallPhase
Sourcing python-imports-check-hook.sh
Using pythonImportsCheckPhase
Sourcing python-metadata-check-hook.sh
Using pythonMetadataCheckPhase
Sourcing python-namespaces-hook
Sourcing python-catch-conflicts-hook.sh
Running phase: unpackPhase
unpacking source archive /nix/store/5w5dlx1jqf227a7p6bn8zgw5fxbnn0az-ruamel.yaml-0.17.40.tar.gz
source root is ruamel.yaml-0.17.40
setting SOURCE_DATE_EPOCH to timestamp 1697806397 of file "ruamel.yaml-0.17.40/setup.cfg"
Running phase: patchPhase
Running phase: updateAutotoolsGnuConfigScriptsPhase
Running phase: configurePhase
no configure script, doing nothing
Running phase: buildPhase
Executing pypaBuildPhase
Creating a wheel...
pypa build flags: --no-isolation --outdir dist/ --wheel
* Getting build dependencies for wheel...
Traceback (most recent call last):
  File "/nix/store/gxrvc2gq4kzz54dqi1mlqw7h4zy4l6aw-python3.14-pyproject-hooks-1.2.0/lib/python3.14/site-packages/pyproject_hooks/_in_process/_in_process.py", line 389, in <module>
    main()
    ~~~~^^
  File "/nix/store/gxrvc2gq4kzz54dqi1mlqw7h4zy4l6aw-python3.14-pyproject-hooks-1.2.0/lib/python3.14/site-packages/pyproject_hooks/_in_process/_in_process.py", line 373, in main
    json_out["return_val"] = hook(**hook_input["kwargs"])
                             ~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/gxrvc2gq4kzz54dqi1mlqw7h4zy4l6aw-python3.14-pyproject-hooks-1.2.0/lib/python3.14/site-packages/pyproject_hooks/_in_process/_in_process.py", line 143, in get_requires_for_build_wheel
    return hook(config_settings)
  File "/nix/store/xv8alksljvbyk0mrbf9xvl16ygx27ajn-python3.14-setuptools-83.0.0/lib/python3.14/site-packages/setuptools/build_meta.py", line 333, in get_requires_for_build_wheel
    return self._get_build_requires(config_settings, requirements=[])
           ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/xv8alksljvbyk0mrbf9xvl16ygx27ajn-python3.14-setuptools-83.0.0/lib/python3.14/site-packages/setuptools/build_meta.py", line 301, in _get_build_requires
    self.run_setup()
    ~~~~~~~~~~~~~~^^
  File "/nix/store/xv8alksljvbyk0mrbf9xvl16ygx27ajn-python3.14-setuptools-83.0.0/lib/python3.14/site-packages/setuptools/build_meta.py", line 317, in run_setup
    exec(code, locals())
    ~~~~^^^^^^^^^^^^^^^^
  File "<string>", line 79, in <module>
ImportError: cannot import name 'Str' from 'ast' (/nix/store/rgnappqqc5vbq60gza5fflyk84sylwl6-python3-3.14.6/lib/python3.14/ast.py)

TIP pass --env-dir and --sdist-extract-dir to keep the build environment and sources, then see https://build.pypa.io/en/stable/how-to/troubleshooting.html#debug-a-failed-build for help debugging a failed build
ERROR Backend subprocess exited when trying to invoke get_requires_for_build_wheel