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57 lines
1.6 KiB
Nix
57 lines
1.6 KiB
Nix
# 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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, bootstrapped-pip
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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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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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# use setuptools shim (so that setuptools is imported before distutils)
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# pip does the same thing: https://github.com/pypa/pip/pull/3265
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setuppy = ./run_setup.py;
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in attrs // {
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# we copy nix_run_setup over so it's executed relative to the root of the source
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# many project make that assumption
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buildPhase = attrs.buildPhase or ''
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runHook preBuild
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cp ${setuppy} nix_run_setup
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${python.interpreter} nix_run_setup ${lib.optionalString (setupPyBuildFlags != []) ("build_ext " + (lib.concatStringsSep " " setupPyBuildFlags))} bdist_wheel
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runHook postBuild
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'';
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installCheckPhase = attrs.checkPhase or ''
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runHook preCheck
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${python.interpreter} nix_run_setup test
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runHook postCheck
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'';
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# Python packages that are installed with setuptools
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# are typically distributed with tests.
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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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${preShellHook}
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if test -e setup.py; then
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tmp_path=$(mktemp -d)
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export PATH="$tmp_path/bin:$PATH"
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export PYTHONPATH="$tmp_path/${python.sitePackages}:$PYTHONPATH"
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mkdir -p $tmp_path/${python.sitePackages}
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${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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