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From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: why is linux-libre-headers behind linux-libre?
Date: Sun, 05 Nov 2017 16:51:08 +0100
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To: Dave Love <fx@gnu.org>
Cc: guix-devel <guix-devel@gnu.org>

Hello,

Dave Love <fx@gnu.org> skribis:

> Efraim Flashner <efraim@flashner.co.il> writes:
>
>> On Tue, Oct 31, 2017 at 02:00:35PM +0100, Vincent Legoll wrote:
>>> Hello,
>>>=20
>>> On Tue, Oct 31, 2017 at 1:35 PM, Dave Love <fx@gnu.org> wrote:
>>> > Why is linux-libre-headers a long way behind linux-libre (currently at
>>> > version 4.4.47, compared with 4.13.10 for linux-libre)?
>>>=20
>>> I suspect this is due to massive rebuilding that would occur when
>>> updating linux-libre-headers

That and also because glibc targets (can target) older kernels, which is
something we rely on.

>> This is typically updated in the core-updates branch, but it hasn't been
>> updated yet. Based on the LTS versions, we should upgrade it to the 4.9
>> branch.
>
> Thanks for the explanations.  I checked that 4.9 would support the
> Omnipath library, at least.

The Omnipath library relies on Linux (not libc) headers, and a specific
version thereof?

I suppose we could also introduce a more recent version of
=E2=80=98linux-libre-headers=E2=80=99 specifically for this purpose, with t=
he
understanding that the resulting binaries rely on a specific kernel
version.

Thanks,
Ludo=E2=80=99.