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path: root/pkgs/development/tools/pypi2nix/default.nix
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{ stdenv, fetchurl, python, zip, makeWrapper
}:

let
  deps = import ./deps.nix { inherit fetchurl; };
  version = "1.3.0";
  src = fetchurl {
    url = "https://github.com/garbas/pypi2nix/archive/v${version}.tar.gz";
    sha256 = "0mk9v4s51jdrrcs78v3cm131pz3fdhjkd4cmmfn1kkcfcpqzw6j8";
    
  };
in stdenv.mkDerivation rec {
  name = "pypi2nix-${version}";
  srcs = with deps; [
    src
    pip
    click
    setuptools
    zcbuildout
    zcrecipeegg
    requests
  ];  # six attrs effect ];
  buildInputs = [ python zip makeWrapper ];
  sourceRoot = ".";

  postUnpack = ''
    mkdir -p $out/pkgs

    mv pip-*/pip                        $out/pkgs/pip
    mv click-*/click                    $out/pkgs/click
    mv setuptools-*/setuptools          $out/pkgs/setuptools
    mv zc.buildout-*/src/zc             $out/pkgs/zc
    mv zc.recipe.egg-*/src/zc/recipe    $out/pkgs/zc/recipe
    # mv six-*/six.py                    $out/pkgs/
    # mv attrs-*/src/attr                $out/pkgs/attrs
    # mv effect-*/effect                 $out/pkgs/effect
    mv requests-*/requests              $out/pkgs/

    if [ "$IN_NIX_SHELL" != "1" ]; then
      if [ -e git-export ]; then
        mv git-export/src/pypi2nix      $out/pkgs/pypi2nix
      else
        mv pypi2nix*/src/pypi2nix       $out/pkgs/pypi2nix
      fi
    fi
  '';

  commonPhase = ''
    mkdir -p $out/bin

    echo "#!${python}/bin/python3"       >  $out/bin/pypi2nix
    echo "import pypi2nix.cli"          >> $out/bin/pypi2nix
    echo "pypi2nix.cli.main()"          >> $out/bin/pypi2nix

    chmod +x $out/bin/pypi2nix

    export PYTHONPATH=$out/pkgs:$PYTHONPATH
  '';

  installPhase = commonPhase + ''
    wrapProgram $out/bin/pypi2nix --prefix PYTHONPATH : "$PYTHONPATH"
  '';

  shellHook = ''
    export home=`pwd`
    export out=/tmp/`pwd | md5sum | cut -f 1 -d " "`-$name

    rm -rf $out
    mkdir -p $out

    cd $out
    runHook unpackPhase
    runHook commonPhase
    cd $home

    export PATH=$out/bin:$PATH
    export PYTHONPATH=`pwd`/src:$PYTHONPATH
  '';

  meta = {
    homepage = https://github.com/garbas/pypi2nix;
    description = "A tool that generates nix expressions for your python packages, so you don't have to.";
    maintainers = with stdenv.lib.maintainers; [ garbas ];
    platforms = with stdenv.lib.platforms; unix;
  };
}