bug#41189: closed ([PATCH 0/3] Add Fakechroot engine for 'guix pack -RR')

[GNU bug Tracking System]

Your message dated Thu, 14 May 2020 17:24:04 +0200
with message-id <address@hidden>
and subject line Re: [bug#41189] [PATCH v2 0/4] Add Fakechroot engine for 'guix 
pack -RR'
has caused the debbugs.gnu.org bug report #41189,
regarding [PATCH 0/3] Add Fakechroot engine for 'guix pack -RR'
to be marked as done.

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41189: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=41189
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> --- Begin Message ---
>
>
>
> Subject: 
>
> [PATCH 0/3] Add Fakechroot engine for 'guix pack -RR'
>
>
>
>
> Date: 
>
> Mon, 11 May 2020 19:05:54 +0200
>
>
>
>
> Hello Guix!
>
> ‘guix pack -RR’ is wonderful, as we know ;-), because it produces
> binaries that work everywhere.
>
> However, the overhead of PRoot is sometimes inappropriate, in
> particular for those who want to run packed software on
> high-performance computers, the very kind of machine that lacks
> Guix and unprivileged user namespaces.
>
> This patch series adds an optional “execution engine” to wrappers
> that uses ld.so and fakechroot LD_PRELOAD trickery.  Since it’s
> just LD_PRELOAD, there’s very little overhead, unlike PRoot.
> On the flip side, it doesn’t work as well as PRoot, because it’s
> “just” LD_PRELOAD.
>
> For example, some of the ‘open’ calls made in libc are not
> intercepted; on such call is in ‘__gconv_load_cache’, which makes
> it fail, and in turn makes Guile fail to start in its first
> ‘scm_to_locale_string’ call.  Things that work well include Bash
> and Python 3.  Let me know how well it works for your favorite
> application!
>
> The execution engine can now be chosen at run time by setting the
> ‘GUIX_EXECUTION_ENGINE’.
>
> For the record, tools like udocker support a similar range of
> execution engines: <https://github.com/indigo-dc/udocker/>.
>
> Feedback welcome!
>
> Thanks,
> Ludo’.
>
> Ludovic Courtès (3):
>   pack: Wrapper honors 'GUIX_EXECUTION_ENGINE' environment variable.
>   gnu: Add fakechroot.
>   pack: Add relocation via ld.so and fakechroot.
>
>  doc/guix.texi                             |  43 +++-
>  gnu/packages/aux-files/run-in-namespace.c | 250 ++++++++++++++++++++--
>  gnu/packages/linux.scm                    |  30 +++
>  guix/scripts/pack.scm                     |  65 +++++-
>  tests/guix-pack-relocatable.sh            |  23 ++
>  5 files changed, 376 insertions(+), 35 deletions(-)
>
> -- 
> 2.26.2
>
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: [bug#41189] [PATCH v2 0/4] Add Fakechroot engine for 'guix pack -RR'
>
>
>
>
> Date: 
>
> Thu, 14 May 2020 17:24:04 +0200
>
>
>
>
> User-agent: 
>
> Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux)
>
>
>
>
> Ludovic Courtès <address@hidden> skribis:
>
> >   pack: Wrapper honors 'GUIX_EXECUTION_ENGINE' environment variable.
> >   pack: Factorize store references in wrapper.
> >   gnu: Add fakechroot.
> >   pack: Add relocation via ld.so and fakechroot.
>
> Pushed as 6456232164890dbf5aa20394ee24637feb4b7b9e!
>
> Ludo’.
>
>
> --- End Message ---