GNU bug report logs - #49149
[PATCH 0/7] Add deb format for guix pack.

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From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: zimoun <zimon.toutoune <at> gmail.com>
Cc: Ludovic Courtès <ludo <at> gnu.org>, 49149 <at> debbugs.gnu.org
Subject: [bug#49149] [PATCH 0/7] Add deb format for guix pack.
Date: Wed, 30 Jun 2021 13:28:05 -0400

Hi again,

How about adding these notes/disclaimers to prevent users breaking their
Guix or existing packs on foreign distributions?

--8<---------------cut here---------------start------------->8---
doc: Add a note and warning regarding the usage of deb packs.

* doc/guix.texi (Invoking guix pack): Move to the end of the table, and add a
note and warning regarding the usage of deb packs.

1 file changed, 21 insertions(+), 5 deletions(-)
doc/guix.texi | 26 +++++++++++++++++++++-----

modified   doc/guix.texi
@@ -6028,11 +6028,6 @@ This produces a SquashFS image containing all the specified binaries and
 symlinks, as well as empty mount points for virtual file systems like
 procfs.
 
-@item deb
-This produces a Debian archive (a package with the @samp{.deb} file
-extension) containing all the specified binaries and symbolic links,
-that can be installed on top of any dpkg-based GNU/Linux distribution.
-
 @quotation Note
 Singularity @emph{requires} you to provide @file{/bin/sh} in the image.
 For that reason, @command{guix pack -f squashfs} always implies @code{-S
@@ -6047,6 +6042,27 @@ If you forget the @code{bash} (or similar) package, @command{singularity
 run} and @command{singularity exec} will fail with an unhelpful ``no
 such file or directory'' message.
 @end quotation
+
+@item deb
+This produces a Debian archive (a package with the @samp{.deb} file
+extension) containing all the specified binaries and symbolic links,
+that can be installed on top of any dpkg-based GNU/Linux distribution.
+
+@quotation Note
+Because archives produced with @command{guix pack} contain a collection
+of store items and because each @command{dpkg} package must not have
+conflicting files, in practice that means you likely won't be able to
+install more one such archive on the same system.
+@end quotation
+
+@quotation Warning
+@command{dpkg} will assume ownership of any files contained in the pack
+that it does @emph{not} know about.  It is unwise to install
+Guix-produced @samp{.deb} files on a system where @file{/gnu/store} is
+shared by other software, such as a Guix installation or other, non-deb
+packs.
+@end quotation
+
 @end table
 
 @cindex relocatable binaries
--8<---------------cut here---------------end--------------->8---

Thanks,

Maxim

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