Build failure: python39Packages.setuptools-scm

[wegank]

Nixpkgs version

• Unstable (25.05)

Steps to reproduce

$ nix-build -A python39Packages.setuptools-scm

Can Hydra reproduce this build failure?

No, Hydra cannot reproduce this build failure.

Link to Hydra build job

No response

Relevant log output

this derivation will be built:
  /nix/store/8r9jc3bpyd31ahi3vsp727xmkrpxbzb8-python3.9-setuptools-scm-8.2.0.drv
building '/nix/store/8r9jc3bpyd31ahi3vsp727xmkrpxbzb8-python3.9-setuptools-scm-8.2.0.drv'...
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-namespaces-hook
Sourcing python-catch-conflicts-hook.sh
Running phase: unpackPhase
unpacking source archive /nix/store/1qhfva9bykmark444jny08zaild6m6c2-setuptools_scm-8.2.0.tar.gz
source root is setuptools_scm-8.2.0
setting SOURCE_DATE_EPOCH to timestamp 1740177680 of file "setuptools_scm-8.2.0/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...
/build/setuptools_scm-8.2.0/src/setuptools_scm/_integration/setuptools.py:31: RuntimeWarning:
ERROR: setuptools==8.2.0 is used in combination with setuptools-scm>=8.x

Your build configuration is incomplete and previously worked by accident!
setuptools-scm requires setuptools>=61

Suggested workaround if applicable:
 - migrating from the deprecated setup_requires mechanism to pep517/518
   and using a pyproject.toml to declare build dependencies
   which are reliably pre-installed before running the build tools

  warnings.warn(
running egg_info
writing src/setuptools_scm.egg-info/PKG-INFO
writing dependency_links to src/setuptools_scm.egg-info/dependency_links.txt
writing entry points to src/setuptools_scm.egg-info/entry_points.txt
writing requirements to src/setuptools_scm.egg-info/requires.txt
writing top-level names to src/setuptools_scm.egg-info/top_level.txt
reading manifest file 'src/setuptools_scm.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no previously-included files found matching '*.nix'
warning: no previously-included files found matching '.pre-commit-config.yaml'
warning: no previously-included files found matching 'changelog.d/*'
warning: no previously-included files found matching '.git_archival.txt'
warning: no previously-included files found matching '.readthedocs.yaml'
warning: no files found matching '*.rst'
no previously-included directories found matching 'nextgen'
adding license file 'LICENSE'
writing manifest file 'src/setuptools_scm.egg-info/SOURCES.txt'

ERROR Missing dependencies:
        tomli<=2.0.2; python_version < "3.11"

Additional context

No response

System metadata

• system: "aarch64-darwin"
• host os: Darwin 24.3.0, macOS 15.3.2
• multi-user?: yes
• sandbox: no
• version: nix-env (Nix) 2.24.12
• channels(weijiawang): "darwin, home-manager, nixpkgs, nur-packages"
• channels(root): "nixpkgs"
• nixpkgs: /Users/weijiawang/.nix-defexpr/channels/nixpkgs

Notify maintainers

@NickCao

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[Kek5chen]

seems like tomli was updated and the dependency now refers to tomli 2.2.1 in unstable which is too new for setuptools-scm with python < 3.11.