Or how can I achieve this goal under such circumstance: A-1.0.0-1 qA-1.0.0-1 Requires A-1.0.0-1 and when A updated to A-1.0.0-2, qA was obsoleted but I can't modify A's spec to obsoletes qA-1.0.0-1 -- ZC Miao<hellwolf at seu.edu.cn> http://hellwolf.cublog.cn/ gpg --keyserver pgp.mit.edu --recv-key 0x6B174C6F