just a note about Debian; i just did an install on an armhf debian wheezy (circa 2013 install), and after much package upgrading and sorting lots of apt-get issues, it finally completed. 'python-argparse' appears to be unavailable as a package, but the ros build completed ok. According to https://packages.debian.org/search?ke... , it is provided by python 2.7; maybe a note in the wiki on this? (i've not actually RUN ros on the machine yet more than confirming roscore runs up; so maybe it will crash and bur the first time it runs something reliant on python, but so far, so good).