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From: Maxim Cournoyer <maxim.cournoyer@gmail.com>
To: Mark H Weaver <mhw@netris.org>
Subject: Re: Jam: which licence is this?
References: <alpine.DEB.2.21.2104250213150.8414@marsh.hcoop.net>
 <87pmyijm5o.fsf@netris.org>
Date: Wed, 28 Apr 2021 09:20:31 -0400
In-Reply-To: <87pmyijm5o.fsf@netris.org> (Mark H. Weaver's message of "Sun, 25
 Apr 2021 13:42:16 -0400")
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Hi Mark,

Mark H Weaver <mhw@netris.org> writes:

> Hi Jack,
>
> Jack Hill <jackhill@jackhill.us> writes:
>
>> I'm working on packaging the Argyll Color Management System for Guix. To 
>> build, it uses the Jam tool, which has the following license:
>>
>> ```
>> This is Release 2.5 of Jam, a make-like program.
>>
>> License is hereby granted to use this software and distribute it
>> freely, as long as this copyright notice is retained and modifications
>> are clearly marked.
>>
>> ALL WARRANTIES ARE HEREBY DISCLAIMED.
>> ```
>>
>> Which license is this?
>
> Thanks very much for your diligence here.
>
> I looked into it, and Debian calls this the "Perforce" license.  The
> "copyright" file for Debian's 'boost' package includes the following
> lines:
>
> License: Perforce
>  License is hereby granted to use this software and distribute it
>  freely, as long as this copyright notice is retained and modifications
>  are clearly marked.
>  .
>  ALL WARRANTIES ARE HEREBY DISCLAIMED.
>
> <https://metadata.ftp-master.debian.org/changelogs//main/b/boost1.67/boost1.67_1.67.0-13+deb10u1_copyright>
>
> Maybe this should be added to (guix licenses) as 'perforce', or perhaps
> 'perforce-jam'?

Unless that license is commonly used enough, I would rather not bloat
the licenses list in Guix and instead use the non-copyleft procedure to
define it on the spot, if needed.

Does that make sense?

Maxim