Re: guix pack -f squashfs ...

[Ludovic Courtès]

Hello Yoshinori,

Yoshinori Arai <address@hidden> skribis:

> I'm trying guix pack -f squashfs ...
> $ guix pack -f squashfs guile emacs geiser
> $ cp /gnu/store/jy7k2g48303jlz5hlaflrsa4mdrbhcy6-squashfs-pack.gz.squashfs \
>    ./emacs-geiser-guile.squashfs
> $ singularity verify emacs-geiser-guile.squashfs
>   WARNING: Authentication token file not found :
>            Only pulls of public images will succeed
>   Verifying image: emacs-geiser-guile.squashfs
>            ERROR:   verification failed: failed to load SIF container file:
>            invalid SIF file: Magic |'H��| want |SIF_MAGIC|
> $ singularity shell emacs-geiser-guile.squashfs
>   WARNING: passwd file doesn't exist in container, not updating
>   WARNING: group file doesn't exist in container, not updating
>   FATAL:   no /bin/sh found inside container
>
> emacs-geiser-guile.squashfs is just squashfs but not container for 
> singularity.
>
> guix manual about guix pack described as follows,
>
>    Yet another option is to produce a SquashFS image with the following
> command:
>
>      guix pack -f squashfs guile emacs geiser
>
> The result is a SquashFS file system image that can either be mounted or
> directly be used as a file system container image with the Singularity
> container execution environment (http://singularity.lbl.gov), using
> commands like ‘singularity shell’ or ‘singularity exec’.
>
> Is above description is for version 2.6.1 but not 3.0?

Yes, what the Guix manual documents is support for Singularity 2.x,
which can consume Squashfs images.

Singularity 3 introduces a new image format called SIF.  ‘guix pack’
cannot produce images in this format yet.

However Singularity 3 also supports the OCI format (that is, ‘guix pack
-f docker’), and hopefully it still supports Squashfs as well?

HTH,
Ludo’.