default.nix

with import <nixpkgs> {

overlays = [
    (self: super: {
      bundler = super.bundler.overrideAttrs (old: {
        name = "bundler-1.16.1";
        src = super.fetchurl {
          url = "https://rubygems.org/gems/bundler-1.16.1.gem";
          sha256 = "1s2nq4qnffxg3kwrk7cnwxcvfihlhxm9absl2l6d3qckf3sy1f22";
        };
      });
    })
  ];
};

with pkgs.python27Packages;
stdenv.mkDerivation {
  name = "env";
  buildInputs = [
    # these packages are required for virtualenv and pip to work:
    #
    python27Full
    python27Packages.virtualenv
    # the following packages are related to the dependencies of your python
    # project.
    # In this particular example the python modules listed in the
    # requirements.tx require the following packages to be installed locally
    # in order to compile any binary extensions they may require.
    #
    stdenv
    openssl
    libxml2
    libxslt
    libzip
    zlib
    unzip
    libffi
    vagrant
  ];
  src = null;
  shellHook = ''
  # set SOURCE_DATE_EPOCH so that we can use python wheels
  SOURCE_DATE_EPOCH=$(date +%s)
  # create a virtualenv outside the mesos workspace
  # due to long paths that break shebangs
  export VENV=/tmp/$$
  rm -rf venv
  virtualenv  --no-setuptools --no-pip --clear $VENV > log/`date '+%Y%m%d%H%M%S'`.venv.log 2>&1
  ln -s $VENV venv
  . venv/bin/activate
  export PATH=$VENV/bin:$PATH
  rm -f get-pip.py
  wget -c -q https://bootstrap.pypa.io/get-pip.py
  venv/bin/python get-pip.py
  venv/bin/pip install --upgrade -r requirements.txt > log/`date '+%Y%m%d%H%M%S'`.pip.install.log 2>&1
  venv/bin/pip install --upgrade -r dev-requirements.txt > log/`date '+%Y%m%d%H%M%S'`.pip.install.dev.log 2>&1
  export PS1="$PS1::nix-shell()"
  '';
}