bug#71226: ‘guix shell -C’ doesn’t work on Ubuntu 24.04

[Marek Felšöci]

Hi Ludovic!

I ran the following Guix command

```
guix shell -C bash -- bash
```
and got these two entries in `dmesg` log.

```
[46999.292835] audit: type=1400 audit(1736460233.024:325): apparmor="AUDIT" 
operation="userns_create" class="namespace" info="Userns create - transitioning 
profile" profile="unconfined" pid=190176 comm="guix" requested="userns_create" 
target="unprivileged_userns"
[46999.297993] audit: type=1400 audit(1736460233.029:326): apparmor="DENIED" 
operation="mount" class="mount" info="failed mntpnt match" error=-13 
profile="unprivileged_userns" name="/tmp/guix-directory.BpSImx/" pid=190193 
comm="guix" fstype="tmpfs" srcname="none"
```
Is it of any help? Is there something else I should have a look at?

Thanks,
Marek.

Ludovic Courtès napísal(a) dňa 9. 1. 2025 o 15:12:
> Hi Marek!
>
> Marek Felšöci <marek.felsoci@lip6.fr> skribis:
>
> > I confirm the issue on my Ubuntu 24.04 installation with Guix coming
> > from apt repositories.
> >
> > I followed the steps from the Ricardo's reply, but the problem
> > persists with the same error:
> >
> > ```
> > guix shell: chyba: mount: mount "none" on
> > "/tmp/guix-directory.DFemEr": Prístup odmietnutý
> > ```
> >
> > Note that in the above message 'Prístup odmietnutý' means 'Access denied'.
> >
> > Have there been any new developments regarding this issue?
> No!  I guess Ricardo was on the right track but this probably needs more
> testing and polishing.
>
> Is there additional info you can get by running “dmesg” or something
> like that?
>
> Thanks,
> Ludo’.