Package nodejs is not available in Debian Wheezy
Created by: xperseguers
The upgrade documentation from 7.8 to 7.9 step 4 (https://github.com/gitlabhq/gitlabhq/blob/master/doc/update/7.8-to-7.9.md#4-install-libs-migrations-etc) tells us to install nodejs using:
sudo apt-get install nodejs
According to https://packages.debian.org/wheezy-backports/nodejs it implies that /etc/apt/source.list
(or equivalent) is configured to fetch from wheezy-backports.