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

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Nix

{ stdenv, python, fetchPypi, makeWrapper, unzip }:
let
wheel_source = fetchPypi {
pname = "wheel";
version = "0.32.2";
format = "wheel";
sha256 = "1216licil12jjixfqvkb84xkync5zz0fdc2kgzhl362z3xqjsgn9";
};
setuptools_source = fetchPypi {
pname = "setuptools";
version = "40.6.2";
format = "wheel";
sha256 = "88ee6bcd5decec9bd902252e02e641851d785c6e5e75677d2744a9d13fed0b0a";
};
in stdenv.mkDerivation rec {
pname = "pip";
version = "18.1";
name = "${python.libPrefix}-bootstrapped-${pname}-${version}";
src = fetchPypi {
inherit pname version;
format = "wheel";
sha256 = "7909d0a0932e88ea53a7014dfd14522ffef91a464daaaf5c573343852ef98550";
};
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 $out/bin
'';
nativeBuildInputs = [ makeWrapper unzip ];
buildInputs = [ python ];
installPhase = ''
# install pip binary
echo '#!${python.interpreter}' > $out/bin/pip
echo 'import sys;from pip._internal import main' >> $out/bin/pip
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
'';
}