##Fixing npm on Raspberry Pi
I can't promise this is the right way to do it but this fixed my issue not being able to install things via npm on my Raspberry Pi ...
source http://raspberryalphaomega.org.uk/2014/06/11/installing-and-using-node-js-on-raspberry-pi/
The error I was getting was:
npm ERR! Error: failed to fetch from registry:
For example:
npm install node-hue-api
To fix this do the following:
sudo apt-get update
sudo apt-get upgrade
Remove nodejs if it already exists
sudo apt-get remove nodejs
Install node
sudo su -
cd /opt
wget http://nodejs.org/dist/v0.10.25/node-v0.10.25-linux-arm-pi.tar.gz
tar xvzf node-v0.10.25-linux-arm-pi.tar.gz
ln -s node-v0.10.25-linux-arm-pi node
chmod a+rw /opt/node/lib/node_modules
chmod a+rw /opt/node/bin
echo 'PATH=$PATH:/opt/node/bin' > /etc/profile.d/node.sh
Now logout/login of terminal session and test via node --version
I found some later linux-arm-pi builds, but they all hit issues with illegal instructions - 0.10.25 seems to be the latest version that still works.
I also couldn't get a successful build of the latest version (0.12.0) on my pi - the build failed somewhere in the v8 build, and the raspbian packaged version of v8 seems to be too early to build against.