From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alex Vong <alexvong1995@gmail.com>
Subject: Re: octave license is incompatible with openssl
Date: Fri, 05 Aug 2016 17:03:55 +0800
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References: <87h9b0ij9x.fsf@gmail.com> <20160804171037.GA11676@jocasta.intra>
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In-Reply-To: <20160804171037.GA11676@jocasta.intra> (John Darrington's message
	of "Thu, 4 Aug 2016 19:10:37 +0200")
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To: John Darrington <john@darrington.wattle.id.au>
Cc: guix-devel@gnu.org

John Darrington <john@darrington.wattle.id.au> writes:

> I would not be at all suprised if there were more incompatibilities like
> this.  Ought we not have  a lint rule that checks this?
>
Indeed, in the short term, we could lint for special case, such that
openssl appears as an input for an GPLv[123](+) package.


In the long term, we could have the following in guix. Since licenses
are scheme values. I was thinking we can have procedure like:

  (compatible? l1 l2)

which is a reflexive and symmetric relation. Also, we might be able to
build compound licenses by:

  (dual-license lics ...)

and

  (intersect-license lics ...)

The 3 procedures should satisfy the following "laws":

  (compatible? l1 (dual-license lics ...))

if and only if

  (any (cut compatible? l1  <>) lics)

Similarly,

  (compatible? l1 (intersect-license lics ...))

if and only if

  (every (cut compatible? l1  <>) lics)


How do everyone think?

Cheers,
Alex

> J'
>
> On Fri, Aug 05, 2016 at 12:35:54AM +0800, Alex Vong wrote:
>      Hi guixes,
>      
>      First, congratulations to Ricardo Wurmus as new maintainer and the new
>      0.11 release is good (it passed all tests)!
>      
>      I notice 'octave 4.0.2' has 'openssl@1.0.2h' as one of its inputs. As
>      far as I know, gplv3 is incompatible with openssl license
>      (https://people.gnome.org/~markmc/openssl-and-the-gpl.html).
>      
>      How should we fix this?
>      
>      
>      Cheers,
>      Alex