Can't download packages on raspberry pi?
I'm trying to install hydro by following the instructions on the wiki, but when I get to
$ rosdep install --from-paths src --ignore-src --rosdistro hydro -y --os=debian:wheezy
I get
E: Unable to locate package ros-hydro-roscpp-serialization
After some brief experimentation with apt-get, I determined that I can't seem to access any ros packages. How can I resolve this? Sorry, I'm new to linux.