nixpkgs-suyu/pkgs/development/python-modules/bootstrapped-pip/default.nix

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{ stdenv, python, fetchPypi, makeWrapper, unzip }:
let
wheel_source = fetchPypi {
pname = "wheel";
version = "0.31.1";
format = "wheel";
sha256 = "80044e51ec5bbf6c894ba0bc48d26a8c20a9ba629f4ca19ea26ecfcf87685f5f";
};
setuptools_source = fetchPypi {
pname = "setuptools";
version = "40.0.0";
format = "wheel";
sha256 = "d68abee4eed409fbe8c302ac4d8429a1ffef912cd047a903b5701c024048dd49";
};
in stdenv.mkDerivation rec {
pname = "pip";
version = "18.0";
name = "${python.libPrefix}-bootstrapped-${pname}-${version}";
src = fetchPypi {
inherit pname version;
format = "wheel";
sha256 = "070e4bf493c7c2c9f6a08dd797dd3c066d64074c38e9e8a0fb4e6541f266d96c";
};
unpackPhase = ''
mkdir -p $out/${python.sitePackages}
unzip -d $out/${python.sitePackages} $src
unzip -d $out/${python.sitePackages} ${setuptools_source}
unzip -d $out/${python.sitePackages} ${wheel_source}
'';
patchPhase = ''
mkdir -p $out/bin
'';
nativeBuildInputs = [ makeWrapper unzip ];
buildInputs = [ python ];
installPhase = ''
# install pip binary
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echo '#!${python.interpreter}' > $out/bin/pip
echo 'import sys;from pip._internal import main' >> $out/bin/pip
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echo 'sys.exit(main())' >> $out/bin/pip
chmod +x $out/bin/pip
# wrap binaries with PYTHONPATH
for f in $out/bin/*; do
wrapProgram $f --prefix PYTHONPATH ":" $out/${python.sitePackages}/
done
'';
}