某个项目需要 PHP 5.3 支持，通过 APT 没办法直接安装，编译安装又是一大堆依赖，最后通过 Debian Snapshot 解决。

  1. 在 http://snapshot.debian.org/ 搜索需要的包, 比如 php5
  2. Got http://snapshot.debian.org/archive/debian-ports/20120225T023111Z/pool-m68k/main/p/php5/
  3. 添加到 source.list:
deb http://snapshot.debian.org/archive/debian/20120225T023111Z/ unstable main
deb-src http://snapshot.debian.org/archive/debian/20120225T023111Z/ unstable main
  1. apt-get -o Acquire::Check-Valid-Until=false update
  2. apt-get install php5=5.3.10-2 php5-fpm php5-cgi, done.