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[art2u]

On Mon, 2005-08-01 at 15:18 +0200, Michael Vogt wrote:
> Hi,
> 
> On Thu, Jul 28, 2005 at 04:23:58PM +0200, Josué Alcalde González wrote:
> > Hello. I am a newbie in this list. I have suscribed to ask for help.
> > 
> > I want to contrib to free software and I find no way to easy install 
> > local debian packages in a gui.
> 
> Yes, that's a big missing feature. The biggest problem I had with
> implementing this feature is that apt does not have a way to do
> dependency resolution for local packages. I wonder how you solved this
> problem? There is a patched apt around that can actually install local
> packages but I guess you don't use it? 
> 
> > I decided to do a program with a look&feel similar to Synaptic, to see 
> > the package properties, and then to try to do an installer for local 
> > packages.
> > 
> > I have been studying Synaptic source code, and I have taken much of the 
> > work. It is a c++ program and a libglade program, so I am using the 
> > interfaces like RGWindow, RGGladeWindow, RGDialog... I also use other 
> > goodies like the error mechanism or the section_trans.
> > I supposed there is no problem since it is GPL.
> 
> That's sounds very nice! Is your sourcecode available somewhere? I'm
> curious :)
> 
> > If you want to see an screenshot: 
> > http://developer.berlios.de/dbimage.php?id=1882
> > 
> > I would want ask two questions:
> > 
> > 1) I would want to know if there is any documentation about synaptic 
> > param options. I would like to know how non-interactive options works, 
> > and what are the posibilities. I would also want if there is any option 
> > to update only one repository.
> 
> I'm not sure what exactly you want to know. Synaptic can be run in
> non-interactive mode to make it easy for other applications to call
> certain services from apt. E.g.: 
> # synaptic --update-at-startup --hide-main-window --non-interactive
> will hide the main window, run "reload" and then exit (non-interactive
> behaves as if the user has clicked "apply". It can be used with
> "--upgrade" or "--dist-upgrade" (or --set-selections) as well.
> Does that answer your question? Or did I misunderstand it :) ?
> 
> > 2) I have been trying to understand libapt-pkg to do one thing but I am 
> > not able (I don't know if it is possible). I would like to know how to 
> > extract a file in a deb file. The idea is to extract the changelog which 
> > is present in most of debian packages which is in 
> > package_name.deb>>data.tar.gz>>/usr/share/doc/package_name/changelog.Debian.gz>>changelog.Debian
> > 
> > Could it be made with the libapt-pkg library?
> 
> You will need the libapt-inst for this (part of apt, it contains of
> libapt-pkg and libapt-inst). In apts sourcecode in
> "cmdline/apt-extracttemplates.cc" is a DebFile class that does pretty
> much what you want. You just need to customize it so that it extracts
> changelogs (and not "config", "control", "templates" as it does now.
> Thinking about it, it would be cool if you could make it generic
> enough so that the current apt-extracttemplates could use your new
> class and we could move that into libapt-inst directly.
> 
> 
> Cheers,
>  Michael
>