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From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: libvdpau: cannot open shared object
Date: Mon, 18 Dec 2017 21:40:04 +0100
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To: Efraim Flashner <efraim@flashner.co.il>
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Efraim Flashner <efraim@flashner.co.il> skribis:

> On Fri, Dec 15, 2017 at 03:31:29PM +0100, Ludovic Court=C3=A8s wrote:

[...]

>> So I think you can push the package, and then we need to figure out what
>> to do on GuixSD with =E2=80=98VDPAU_DRIVER=E2=80=99 (set it unconditiona=
lly to =E2=80=98va_gl=E2=80=99?)
>> and how to avoid LD_LIBRARY_PATH.
>
> The VDPAU_DRIVER is actually a mesa environmental variable IIRC, so
> setting it unconditionally would negatively affect others.

How should it be handled?

I=E2=80=99m under the impression that =E2=80=98va_gl=E2=80=99 is the generi=
c driver that works
for everyone, but that there might be optimized drivers for specific
pieces of hardware, is that correct?

If it is, we could always use =E2=80=98va_gl=E2=80=99 as the default.

As for LD_LIBRARY_PATH, perhaps we need a central location for these
drivers on GuixSD, like /run/current-system/vdpau?

Ludo=E2=80=99.