Generic virtual environment

venv.sh

#!/usr/bin/env bash

echo "*** Remeber to call this with source ***"
echo "Activating \"virtual environment\" (modifying PATH).
Use \"deactivate\" to escape"

function deactivate () {
  
	PS1=$_OLD_PS1
	PATH=$_OLD_PATH
	WRK=$_OLD_WRK

	unset -f deactivate
}

_OLD_PS1=$PS1
_OLD_PATH=$PATH
_OLD_WRK=$WRK

LOCAL_BIN_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
LOCAL_VENDOR_BIN_DIR=$( readlink -f "${LOCAL_BIN_DIR}/../vendor/vendor/bin/" )

PS1="grammatip venv:${PS1}"
PATH="${LOCAL_BIN_DIR}:${LOCAL_VENDOR_BIN_DIR}:${PATH}"
WRK="$( readlink -f "${LOCAL_BIN_DIR}/../" )"