merge for universal builds (was: Re: [31954] trunk/base/src/port1.0/portutil.tcl)

[Ryan Schmidt]

On Dec 12, 2007, at 11:50, mww at macports.org wrote:

> Revision: 31954
>           http://trac.macosforge.org/projects/macports/changeset/31954
> Author:   mww at macports.org
> Date:     2007-12-12 09:50:49 -0800 (Wed, 12 Dec 2007)
>
> Log Message:
> -----------
> add 'merge' function for mergin multiple (single arch) destroots  
> into one (universal) destroot

How does this compare with

http://trac.macports.org/projects/macports/browser/users/pipping/ 
merge.rb

and how does it relate to backup() and lipo() in

http://trac.macports.org/projects/macports/browser/trunk/base/src/ 
port1.0/portutil.tcl

?