From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludovic.courtes@inria.fr (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: Generating wrappers for execution in non-root non-Guix contexts
Date: Fri, 27 Apr 2018 18:38:36 +0200
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References: <87zi1rwsv6.fsf@inria.fr> <87r2n12v2z.fsf@gmail.com>
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In-Reply-To: <87r2n12v2z.fsf@gmail.com> (Chris Marusich's message of "Thu, 26
	Apr 2018 20:21:08 -0700")
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To: Chris Marusich <cmmarusich@gmail.com>
Cc: guix-devel <guix-devel@gnu.org>

Hello!

Chris Marusich <cmmarusich@gmail.com> skribis:

> ludovic.courtes@inria.fr (Ludovic Court=C3=A8s) writes:
>
>> Hello Guix!
>>
>> The hack below allows =E2=80=98guix pack=E2=80=99 to produce wrappers th=
at allow,
>> through user namespaces, programs to automatically relocate themselves
>> when you run them unprivileged on a machine that lacks Guix.
>
> That's really cool!
>
> I've noticed that when running in a chroot-like environment, sometimes
> programs expect certain files to exist that don't - for example, device
> files in /dev, procfs files in /proc, or even things like
> /etc/resolv.conf.  Does this wrapper automatically create those kinds of
> files, or would programs that want to access those kinds of files still
> need some special love on an case-by-case basis?

The wrapper automatically bind-mounts every entry in /, such that the
only difference compared to the =E2=80=9Creal=E2=80=9D system is the extra =
/gnu/store.


Note: we had this discussion about =E2=80=98guix run=E2=80=99 with Mike Ger=
witz and
Rutger not long ago (to run applications in isolated environments).  In
a pretty similar way, we could generate least-authority wrappers for
what you install with =E2=80=98guix package=E2=80=99.  Like, one could writ=
e:

  guix package -i icecat --least-authority

or something like that.  Food for thought=E2=80=A6

Ludo=E2=80=99.