[NPM] Wrong python executable at install

In case you get an error similar to this when trying to npm install :

Error: Python executable "python" is v3.4.2, which is not supported by gyp.

You should tell npm which executable to use with the following command:

npm config set python python2

If you are on ArchLinux, you’re likely to encounter this problem since the default python is python3. Fortunately, it’s easy to fix.