title: Activate virtual environment within Pydev
body: <p>I am confused about using the new virtual environments within <code>Pydev</code>. It appears that one must activate the virtual environment in a shell script first and then invoke <code>Eclipse</code> with <code>Pydev</code> from within the same shell script to get <code>Eclipse/Pydev</code> to use the virtual environment. Is there no way to activate a virtual environment from within Eclipse and thus control the execution environment from within <code>Eclipse</code>?</p>