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Subject:	Re: Fwd: Errors in cURL dependency chain
To:	Steven Penny <svnpenn AT gmail DOT com>,
	The Cygwin Mailing List <cygwin AT cygwin DOT com>
References:	<5de321b2 DOT 1c69fb81 DOT 3f589 DOT a809 AT mx DOT google DOT com> <CAAXzdLUh5+ORFhXgpSthoz+XZODAy_5zMsn9YKqHrjmkMdRCMg AT mail DOT gmail DOT com>
From:	Jon Turney <jon DOT turney AT dronecode DOT org DOT uk>
Message-ID:	<e310ee56-8844-edb6-b1a7-0553fa199416@dronecode.org.uk>
Date:	Sun, 1 Dec 2019 14:15:47 +0000
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On 01/12/2019 02:15, Steven Penny wrote:
> Here is a dependency chain:
> 
> 1. curl
> 2. libcurl4
> 3. libopenldap2_4_2
> 4. libsasl2_3
> 5. libopenssl100
> 
> I have two issues with this. First, "libopenssl100" is obsolete:
> 
>      @ libopenssl100
>      sdesc: "Obsoleted by libssl1.0"
> 
> David, can this be resolved? Second, while looking at "libopenssl100" I noticed
> another issue:
> 
>      @ libopenssl100
>      requires: libssl1.0
>      depends2:
> 
> My understanding is that "depends2" is the proper dependency endpoint, and that
> "requires" is only kept for legacy parsers. Yaakov, can you advise?
This understanding is correct, but incomplete.

If you look at libssl1.0, you will see it has:

> @ libssl1.0
> obsoletes: libopenssl100

We don't depends2: on something which obsoletes:, as that can lead to a 
solver conflict (See [1]).

[1] 
https://cygwin.com/git/gitweb.cgi?p=cygwin-apps/calm.git;a=commitdiff;h=d75abceedb46749982669236c5c102796a1fbfb1;hp=f92ad1d5c292ed54e7a62f5c52280efab8267f37



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