bug#30537: glibc 2.26 refuses to run on CentOS 6.8

[Efraim Flashner]

On Mon, Feb 19, 2018 at 07:46:02PM +0100, Ricardo Wurmus wrote:
> Hi Guix,
> 
> I have a bad day.  After the upgrade to glibc 2.26 none of the
> Guix-installed software runs on the HPC cluster running CentOS 6.8.
> 
> The glibc 2.26 expects a minimum kernel version of 3.x on x86_64, but
> CentOS 6.8 only comes with a heavily patched 2.6.32.
> 
> The NixOS developers patch glibc to make sure that all software still
> runs on Linux 2.6.32:
> 
>     
> https://raw.githubusercontent.com/NixOS/nixpkgs/master/pkgs/development/libraries/glibc/allow-kernel-2.6.32.patch
> 
> Can we please also apply this?  Without this Guix on HPC is pretty much
> dead at the MDC.
> 

We should also update the docs with the (new) minimum specs as needed.

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