[Discuss-gnuradio] Installing rtl-sdr

I'm having trouble installing rtl-sdr for gnuradio in Linux Mint. Here is the complete set of shell commands I did:

    sudo pip install PyBOMBS

    mkdir pyb

    pybombs recipes add gr-recipes git+https://github.com/gnuradio/gr-recipes.git

    pybombs prefix init -a default pyb -R gnuradio-default

    pybombs install rtl-sdr

    sudo ldconfig

    cd pyb

    source ./setup_env.sh

After doing all this I can run gnuradio-companion, but I can't find rtl-sdr anywhere in the tree on the right inside the application. Can someone tell me what I need to do to get this installed?

-Bill  KG5RMJ