TurnKey Linux's take on Ubuntu appliance development: KISS

Steve Langasek steve.langasek at ubuntu.com
Thu Jan 7 11:29:18 GMT 2010

On Thu, Jan 07, 2010 at 01:31:44AM +0100, Pau Garcia i Quiles wrote:
> What's different with tkpatch? Meaning, how would those prompts be
> different if those conffiles were managed by tkpatch instead of dpkg?
> Let's see:

> * With Debian packages:
>   1. I install Postfix using Ubuntu packages (say, Karmic packages)
>   2. I install the postfix-appliance-config package, which modifies
> dpkg-managed files in the Postfix packages
>   3. Some months later, I upgrade Postfix to a new version using
> Ubuntu packages (say, Lucid packages). I will be presented with some
> prompts for stuff modified by the postfix-appliance-config package.

The difference is that, per policy, there should be no such
"postfix-appliance-config" package in Ubuntu that's modifying
dpkg-registered conffiles.  Any configuration files that need to be
programmatically altered by packages must first be unregistered from being

Steve Langasek                   Give me a lever long enough and a Free OS
Debian Developer                   to set it on, and I can move the world.
Ubuntu Developer                                    http://www.debian.org/
slangasek at ubuntu.com                                     vorlon at debian.org
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