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Subject: Re: Ruby and Debian
From: "Hans Fugal" <fugalh gmail.com>
Date: Fri, 23 Dec 2005 22:32:50 +0900
References: 171288 171293 172013 172169
In-reply-to: 172169

It's called equivs, and I've never used it but I know you can do it.
Try that for a google keyword.