# When creating virtulaenv with conda, if you're using PIP_REQUIRE_VIRTUALENV=true
# You might end up with you cannot install by pip even you already activated the virtualenv
# This patch is another approach to let your conda venv work with the PIP_REQUIRE_VIRTUALENV flag
# By patching your pip library with this file, and add another flag CONDA_ENVS in your bashrc
# For instance, export CONDA_ENVS="/Users/$USER/conda/envs"
# Then, the pip flag should not prevent you installing anything in your conda venv anymore.

python_path=$(which python)
python_version=$(echo "$(python -V 2>&1)" | grep -E -o '[0-9]{1,}\.[0-9]{1,}(\.[0-9]{1,})?' | grep -E -o '[0-9]{1,}.[0-9]{1,}')
pip_version=$(conda list | grep pip | grep -E -o '[0-9]{2,}\.[0-9]{1,}(\.[0-9]{1,})?' | grep -E -o '[0-9]{2,}.[0-9]{1,}')
pip_root=${python_path/bin\/python/lib/python$python_version/site-packages/pip}
cur=$(pwd)

if [ 1 -eq "$(echo "${pip_version} < 19.2" | bc)" ] ; then
    filename=locations.py
else
    filename=utils/virtualenv.py
fi

while true; do
    echo "This will be the file which I am going to modify: $pip_root/_internal/$filename"
    echo "Please paste the path above IF it shows a prompt for the path to file, otherwise you're all good."
    read -p "ok for you? [Y/n] >> " yn
    echo ""
    case $yn in
        [Yy]* )
            cd $pip_root
            echo "diff --git a/_internal/$filename b/_internal/$filename
index 380db1c3..db18befd 100644
--- a/_internal/$filename
+++ b/_internal/$filename
@@ -15,6 +15,8 @@ def running_under_virtualenv():
     elif sys.prefix != getattr(sys, "base_prefix", sys.prefix):
         # PEP 405 venv
         return True
+    elif os.path.dirname(sys.prefix) == os.environ.get(\"CONDA_ENVS\"):
+        return True

     return False" > ./pip.patch
            patch -p1 < ./pip.patch
            rm ./pip.patch
            echo "Please export a env variable call CONDA_ENVS with the path to your conda envs folder"
            cd $cur
            break
        ;;
        [Nn]* ) exit;;
        * ) echo "Please answer yes or no.";;
    esac
done