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Subject: [bug#36093] [PATCH 2/2] pack: Add '--entry-point'.
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References: <20190604210115.24477-1-ludo@gnu.org>
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From: Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de>
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Date: Fri, 7 Jun 2019 12:21:32 +0200
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To: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Cc: 36093@debbugs.gnu.org


Ludovic Court=C3=A8s <ludo@gnu.org> writes:

>> Also, in general, do we conflate "squashfs" and "singularity"?  It has b=
een
>> that way in guix/scripts/pack.scm's squashfs-image before this patch alr=
eady
>> and a few extra files can't hurt, but we could also just provide a
>> function "singularity-image" or something.
>
> Yes, we do conflate Singularity and Squashfs, but I think there=E2=80=99s=
 no
> other =E2=80=9Ccontainer tool=E2=80=9D that uses Squashfs anyway.

When I originally added the squashfs support to =E2=80=9Cguix pack=E2=80=9D=
 I had
Singularity in mind, but since it didn=E2=80=99t do anything particular for
Singularity I named it =E2=80=9Csquashfs=E2=80=9D.

squashfs is used as a format by Snap (which we don=E2=80=99t explicitly sup=
port
yet), but it is also generally useful as a way to share disk images,
which could for example be used with lxc containers.

> We could rename it to =E2=80=9Csingularity=E2=80=9D, but it turns out Sin=
gularity 3.x
> has its own image format unimaginatively called SIF, so perhaps we=E2=80=
=99re
> better off with the status quo.
>
> Thoughts?  Ricardo?

In my opinion, going forward we should not conflate =E2=80=9Csquashfs=E2=80=
=9D and
Singularity more and eventually *add* a format handler for Singularity
3.x.

But these changes to the =E2=80=9Csquashfs=E2=80=9D format handler look fin=
e to me.
Let=E2=80=99s deal with Singularity 3.x later.

Thanks!

--
Ricardo