From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <imz@altlinux.org>
Date: Sat, 12 May 2018 12:50:33 +0300 (MSK)
From: Ivan Zakharyaschev <imz@altlinux.org>
To: ALT Linux Team development discussions <devel@lists.altlinux.org>
In-Reply-To: <CAB_XSX38hZp65aa=2qRHhg-WM4vQ85WyhMQPc2kUvzsX0f88aA@mail.gmail.com>
Message-ID: <alpine.LFD.2.20.1805121245420.3504@imap.altlinux.org>
References: <CAB_XSX38hZp65aa=2qRHhg-WM4vQ85WyhMQPc2kUvzsX0f88aA@mail.gmail.com>
User-Agent: Alpine 2.20 (LFD 67 2015-01-07)
MIME-Version: 1.0
Content-Type: multipart/mixed; BOUNDARY="1807885841-231419480-1526118633=:3504"
Subject: Re: [devel]
	=?koi8-r?b?9yDexc0g0sHazsnDwSDNxdbE1SBSZXF1aXJlcyDJIFBy?=
	=?koi8-r?b?ZVJlcSDXINPQxcvByD8=?=
X-BeenThere: devel@lists.altlinux.org
X-Mailman-Version: 2.1.12
Precedence: list
Reply-To: ALT Linux Team development discussions <devel@lists.altlinux.org>
List-Id: ALT Linux Team development discussions <devel.lists.altlinux.org>
List-Unsubscribe: <https://lists.altlinux.org/mailman/options/devel>,
 <mailto:devel-request@lists.altlinux.org?subject=unsubscribe>
List-Archive: <http://lists.altlinux.org/pipermail/devel>
List-Post: <mailto:devel@lists.altlinux.org>
List-Help: <mailto:devel-request@lists.altlinux.org?subject=help>
List-Subscribe: <https://lists.altlinux.org/mailman/listinfo/devel>,
 <mailto:devel-request@lists.altlinux.org?subject=subscribe>
X-List-Received-Date: Sat, 12 May 2018 09:50:33 -0000
Archived-At: <http://lore.altlinux.org/devel/alpine.LFD.2.20.1805121245420.3504@imap.altlinux.org/>
List-Archive: <http://lore.altlinux.org/devel/>
List-Post: <mailto:devel@altlinux.org>

  This message is in MIME format.  The first part should be readable text,
  while the remaining parts are likely unreadable without MIME-aware tools.

--1807885841-231419480-1526118633=:3504
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8BIT

On Sat, 12 May 2018, Eugine Kosenko wrote:

> Народ, в чем разница между этими определениями, и какое из них
> предпочтительно для задании простой зависимости между пакетами?

Традиционно используются Requires.

Есть такие мнения:

https://www.redhat.com/archives/rpm-list/2003-June/msg00173.html :

"Not true. Requires: and PreReq: are exactly the same.

...

If you see a differnece between PreReq: and Requires: (ignoring dependency 
loops, different problem), then someting is broken.

..."

https://stackoverflow.com/a/27865060/94687 :

"The code in rpm-4.8.0 has chosen to remap Prereq: (which tries to force 
a package installation before current package) as if it were a 
Requires(pre): (which marks a require dependency needed by a %pre 
scriptlet)contrary to what was originally implemented in rpm.

Yes: dependency loops will be dealt with "best effort" so that an 
installation doesn't halt with dependency loops. ..."

http://ftp.rpm.org/api/4.4.2.2/dependencies.html :

"Prereqs are different from requires only in that a PreReq is guaranteed 
to be installed before the package that contains the PreReq. PreReq's are 
used only to order packages, otherwise PreReq's are exactly the same as a 
Requires: dependency."

-- 
Best regards,
Ivan
--1807885841-231419480-1526118633=:3504--