Re: “guix pack -RR r“ fails?

[zimoun <zimon.toutoune@gmail.com>]

Hi,

On Thu, 12 Nov 2020 at 21:41, Ludovic Courtès <ludo@gnu.org> wrote:

>> Hum?  I do not know if I am doing correctly.  The packages
>> fakechroot-2.9-24.5.el6_1.1.x86_64.rpm and
>> fakechroot-libs-2.9-24.5.el6_1.1.x86_64.rpm are installed.  And I get
>> as regular user:
>
> You do not need these packages: the tarball includes a copy of
> libfakechroot.so (see
> <https://hpc.guix.info/blog/2020/05/faster-relocatable-packs-with-fakechroot/>).
>
>> $ export GUIX_EXECUTION_ENGINE=fakechroot
>> $ strace -f -s 500 -o logg ./bin/R
>> fakechroot: unsupported Guix execution engine; ignoring
>
> You would need to use ‘guix pack -RR’ instead of ‘guix pack -R’ to get
> the ‘fakechroot’ execution engine.
>
>> However, as root, simply running ./bin/R returns:
>>
>> # ./bin/R
>> R: run.c:245: disallow_setgroups: Unexpected error: No such file or directory.
>> Abandon
>
> That indicates that user namespaces are not supported.

I have used ’-RR’ but because it is not working, then I tried to install
extra stuff in case.  But if the kernel is not supporting the namespace,
that’s a end.  Period.


> But wait, if you’re root, you can just as well upgrade to a kernel that
> supports unprivileged user namespaces… or even install Guix?  :-)

That’s not so simple.  It is an old RHEL and I am not sure that the
upgrading path is smooth…  So I am applying the well-known rule: do not
fix it if it is not broken. ;-) Well, I do not want to spend hours to
figure out what is wrong with the new configuration (hardware).

Installing Guix (the package manager) cannot work because the same
problem: kernel.

I am configuring another machine (Dell T620) to smooth the switch.  But
I hit the very same problem: spending hours to figure out what’s wrong
because I am missing obscure hardware configurations.


Thank you for your help.

Cheers,
simon