On http://nightly.openerp.com/7.0/nightly/src/openerp-7.0-latest.tar.gz (doesn't exist) the last file is 05-Aug-2014 (openerp-7.0-20140804-231303.tar.gz)
On http://nightly.openerp.com/7.0/nightly/deb/ the last update was on 10-Oct-2014
If I try https://www.odoo.com/page/download I select linux -> src I get a 404 errror (not found)