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Date: Tue, 15 Jul 2008 18:37:51 +0400
From: Sergey Matveychuk <sem@FreeBSD.org>
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To: Anders Nore <andenore@freebsd.org>
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Cc: freebsd-ports@freebsd.org
Subject: Re: pkg_add fixing dependencies
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Anders Nore wrote:
> So my question is, shouldn't "pkg_add -r zip" check installed packages 
> for dependencies and make a correct +REQUIRED_BY file for zip? I know 
> that portupgrade and portmaster does this.

As I understand, adding and upgrading should be separate processes.

When you add a package, you should check if an old version of the 
package or conflicting packages exist and install package otherwise.

When you update a package, you save all dependency info, delete an old 
package, add a new one and restore dependency info. To have a recursion 
is good here (update depended packages or packages that depend on the 
package) as user choice.

There are some unclean cases there. E.g. packages with different 
PREFIXes, etc.

-- 
Dixi.
Sem.