53 lines
1.6 KiB
Nix
53 lines
1.6 KiB
Nix
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# This function provides specific bits for building a setuptools-based Python package.
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{ lib
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, python
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}:
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{
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# passed to "python setup.py build_ext"
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# https://github.com/pypa/pip/issues/881
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# Rename to `buildOptions` because it is not setuptools specific?
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setupPyBuildFlags ? []
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# Execute before shell hook
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, preShellHook ? ""
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# Execute after shell hook
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, postShellHook ? ""
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, ... } @ attrs:
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let
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options = lib.concatMapStringsSep " " (option: "--global-option ${option}") setupPyBuildFlags;
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in attrs // {
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buildPhase = attrs.buildPhase or ''
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runHook preBuild
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mkdir -p dist
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echo "Creating a wheel..."
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${python.pythonForBuild.interpreter} -m pip wheel --no-index --no-deps --no-clean --no-build-isolation --wheel-dir dist ${options} .
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echo "Finished creating a wheel..."
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runHook postBuild
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'';
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installCheckPhase = ''
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runHook preCheck
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echo "No checkPhase defined. Either provide a checkPhase or disable tests in case tests are not available."; exit 1
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runHook postCheck
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'';
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# With Python it's a common idiom to run the tests
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# after the software has been installed.
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doCheck = attrs.doCheck or true;
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shellHook = attrs.shellHook or ''
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${preShellHook}
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# Long-term setup.py should be dropped.
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if [ -e pyproject.toml ]; then
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tmp_path=$(mktemp -d)
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export PATH="$tmp_path/bin:$PATH"
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export PYTHONPATH="$tmp_path/${python.pythonForBuild.sitePackages}:$PYTHONPATH"
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mkdir -p $tmp_path/${python.pythonForBuild.sitePackages}
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${python.pythonForBuild.pkgs.bootstrapped-pip}/bin/pip install -e . --prefix $tmp_path >&2
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fi
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${postShellHook}
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'';
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}
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