The Problem: Vendor software we were looking to evaluate did not compile correctly using the lastest version of wheezy(7.8 at the time of writing).
The Solution: We had a to build a new server using snapshot.debian.org. This allowed us to build the server at a point in time after 7.1 was released but prior to the 7.2 release. Below are the settings we use.
cat /etc/apt/sources.list deb http://snapshot.debian.org/archive/debian/20130802T034916Z/ wheezy main deb http://snapshot.debian.org/archive/debian-security/20130802T202345Z/ wheezy/updates main
For more details head on over to the site.