DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:date:from:reply-to:message-id:to:subject
	:in-reply-to:references:mime-version:content-type
	:content-transfer-encoding; q=dns; s=default; b=BwhWoPzTA4GpQW35
	fvp2iq5BQIX5ePJuLq3id4d9fX0oT+TDMGw6awi2bd+3K563dr/kqC8ZNsLOPUUH
	UCkDQDYGcmxEqg48udQQx3tlmQ5E26S5ZISqKHeyobm73EcYRBnJDtfoK2ZIGp52
	FENx0SSVIYFGk9AyeGPRmWIFXMo=
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Date: Sat, 30 Sep 2017 12:00:08 +0300
From: Andrey Repin <anrdaemon AT yandex DOT ru>
Reply-To: cygwin AT cygwin DOT com
Message-ID: <216159991.20170930120008@yandex.ru>
To: "Sam Edge (Cygwin)" <cygwin AT cygwin DOT com>, cygwin AT cygwin DOT com
Subject: Re: Dependency issues in setup.ini.
In-Reply-To: <505405e4-5a2f-8d6b-f012-404bd7d69009@gmx.com>
References: <505405e4-5a2f-8d6b-f012-404bd7d69009 AT gmx DOT com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

Greetings, Sam Edge (Cygwin)!

> I've been developing a Python package that can interrogate and
> manipulate local package caches (the directories where setupXXX.exe
> keeps its downloads) and installation databases (from Cygwin
> /etc/setup/installed.db files) with a mind to pruning, merging and
> reporting in the spiript of Michael A. Chase's 'clean_setup' utility but
> as a scriptable tool set rather than a stand-alone utility.

I'm eager to see the fruits of your labor.

> It's not production ready yet but it's already flagged up some issues.

> For example we have lots of dependency loops in the 'requires' fields in
> setup.ini - even to the point that some packages depend upon themselves!

Dependency upon itself is curious, but other than that, this is a normal
situation for a package manager. Some packages are split for easier
maintenance of each, but are interlocked in their typical usage pattern.

> And also we have some dependency omissions. For example, mintty doesn't
> depend upon anything - it has no requires field. Surely, every binary
> package should depend at least upon 'cygwin'?

While this is "not good", this is also not particularly bad for packages in
base - this group is always installed.

> Is this a known issue or should I report in more detail?

Nonetheless, such issues are best kept highlighted, unless it is clearly
seen/documented as intended.


-- 
With best regards,
Andrey Repin
Saturday, September 30, 2017 11:54:56

Sorry for my terrible english...


--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple