Re: [gentoo-dev] dependences

[omestre]

I did not answer your questions...
  I want that information to a specific installed system.
  I can not handle the USE flags in gentoo.. What i really
need is a information about "minimum" depends. What packages
are requireds to each software to run (execute without errors).
  If the gentoo have a manner to give me that answer, thanks. If not,
i will get a screenshot of dependences, with a gentoo system with
a USE flags specific configurations. If you can send me a file that
describes that to your home computer by example... thanks. In debian
it is very, very simple. I have a computer with 600 installed packages,
and with one command i get the "required" depends for each one. It is
what i want from gentoo. :))
  Thanks.

On Sun, 18 Jul 2004, Georgi Georgiev wrote:

> Date: Sun, 18 Jul 2004 02:15:46 +0900
> From: Georgi Georgiev <chutz@×××.net>
> To: gentoo-dev@l.g.o
> Subject: Re: [gentoo-dev] dependences
>
> maillog: 17/07/2004-16:09:08(+0000): omestre types
>>
>>  Hello,
>>  My name is Leal, i'm working in my graduation monograph,
>> and the subject is "GNU/Linux Distribution's application
>> management software". Initially, I'm testing two distros...
>> Debian and Gentoo. After that, i will try out fedora. I know
>> Debian, but with gentoo i have found some "problems", and i'm
>> asking you help, to make my work as right as possible. One of
>> my principal tasks is determine how much dependences a package
>> have. With "qpkg" i have got that informations for my installed
>> gentoo system, but the "SYSTEM PROFILE" confuses me. Some packages
>> have as dependence the word "SYSTEM PROFILE" that is not a package,
>> but too many of them... So i have created a "fake" package "SYSTEM-PROFILE
>> " to my tasks... The question is: There is a manner to extract the
>> informations that i want, whithout this SYSTEM PROFILE?
>>  Well, in my opinion this procedure used by gentoo is "confuse" because
>> creates global dependence. In production environments, the information
>> about packages dependences (exactly) is essential. If one software
>> dependes on libc6, i want to know that, and don't want know that it
>> depends on SYSTEM PROFILE. In my home page have "graphs" and text files,
>> take a look and tell me if gentoo give a tool to get the informations
>> that i want: Especifics depends.
>
> I am not sure what you're trying to accomplish, and am pretty sure that those
> numbers that you're gathering would make little sense in a cross-distribution
> paper. Several other things that bother me: what do you do when useflags change
> the number of dependcies? Or what do you do, if a dependency is not listed in
> one distro, because it depends on something else that requires the other one
> anyway. Something like having a dependency on gtk, but not on x11, because gtk
> depends on x11 anyway. Take a look at what is listed in the ebuild for gedit,
> and what it says on http://packages.debian.org/unstable/gnome/gedit for
> example.
>
> Now to your question.  Are you interested in run-time dependencies, or
> compile-time dependencies? If you're comparing to a binary distribution, I'd
> say you are looking for run-time deps, a.k.a RDEPEND, and here is how to find
> both of them.
>
>  emerge --pretend --emptytree
>
> This command will show you what packages are needed to get a given package
> running on a fresh system. This is the best way to find all the dependencies
> for a given package. However, since you probably want to differentiate between
> DEPEND and RDEPEND, I suggest the following approach:
>
>  mkdir /mnt/dummy
>  export ROOT=/mnt/dummy
>  emerge --pretend --emptytree gedit
>
> Running the same command as above, but with a different root, will tell you
> what packages need be installed on your current system (if it were fresh) in
> order to compile the package, and what packages need to be installed in the
> $ROOT system (if it were fresh, and it really is fresh) in order to run the
> package there.  Those that are to be installed in /mnt/dummy are the run-time
> dependencies. The rest are the compile-time dependencies. Version numbers
> however, would be irrelevant, since they heavily depend on what is currently in
> your portage tree and your ACCEPT_KEYWORDS.
>
> --
> \    Georgi Georgiev   \  I cannot draw a cart, nor eat dried oats;    \
> /    chutz@×××.net     / If it be man's work I will do it.             /
> \   [phone]   \                                               \
>
> --
> gentoo-dev@g.o mailing list
>
>

omestre@××××××××××××.org
SDF Public Access UNIX System - http://sdf.lonestar.org

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