Debian Bug report logs - #914208
debootstrap: consider disabling merged /usr by default for --variant=buildd?

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Simon McVittie <smcv@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: debootstrap: consider disabling merged /usr by default for --variant=buildd?

Date: Tue, 20 Nov 2018 16:50:36 +0000

[Message part 1 (text/plain, inline)]

Package: debootstrap
Version: 1.0.110
Severity: wishlist
Tags: patch
User: md@linux.it
Usertags: usrmerge

As discussed in <https://bugs.debian.org/913229> and the debian-devel
thread starting at <https://lists.debian.org/debian-devel/2018/11/msg00299.html>,
buildd chroots should not be generated with merged /usr. However, this
is now the default in stretch-backports' debootstrap, which buildds
apparently use.

Avoiding merged /usr for buildds mitigates a frequently-seen class of
bugs in which packages end up with wrong executable paths hard-coded,
for example /usr/bin/bash or /bin/apt-get (which would both work fine
on a merged-/usr system, but not on an unmerged-/usr system).

I've proposed a patch to dsa-puppet that explicitly disables merged /usr
for buildd chroots (#914204) and I already had a similar patch accepted
into sbuild-createchroot, but I think it might also be wise to make
--variant=buildd default to --no-merged-usr? That would avoid having to
patch everything that creates a buildd chroot.

In the attached patch, --variant=buildd produces an unmerged-/usr chroot,
but --variant=buildd --merged-usr still produces a merged-/usr chroot.

    smcv

[0001-Disable-merged-usr-by-default-when-making-a-buildd-c.patch (text/x-diff, attachment)]

Message #14 received at 914208-close@bugs.debian.org (full text, mbox, reply):

From: Julien Cristau <jcristau@debian.org>

To: 914208-close@bugs.debian.org

Subject: Bug#914208: fixed in debootstrap 1.0.111

Date: Fri, 30 Nov 2018 21:22:48 +0000

Source: debootstrap
Source-Version: 1.0.111

We believe that the bug you reported is fixed in the latest version of
debootstrap, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 914208@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Julien Cristau <jcristau@debian.org> (supplier of updated debootstrap package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)


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Hash: SHA256

Format: 1.8
Date: Fri, 30 Nov 2018 21:01:08 +0100
Source: debootstrap
Binary: debootstrap debootstrap-udeb
Architecture: source
Version: 1.0.111
Distribution: unstable
Urgency: medium
Maintainer: Debian Install System Team <debian-boot@lists.debian.org>
Changed-By: Julien Cristau <jcristau@debian.org>
Description:
 debootstrap - Bootstrap a basic Debian system
 debootstrap-udeb - Bootstrap the Debian system (udeb)
Closes: 914208
Changes:
 debootstrap (1.0.111) unstable; urgency=medium
 .
   * Team upload
 .
   [ Simon McVittie ]
   * Disable merged /usr by default when making a buildd chroot (closes: #914208)
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 76745e4c95c82250cd719418d9fdf9ba54c03bc5 1988 debootstrap_1.0.111.dsc
 d9497616a66299096ff8158c275e92113e94edc2 75503 debootstrap_1.0.111.tar.gz
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 1c184198f7f542da379c937c585de07c6cca59d876ea79cf178d6b263c3a46d4 75503 debootstrap_1.0.111.tar.gz
Files:
 8944c2a469086323a6597bf5a7431203 1988 admin optional debootstrap_1.0.111.dsc
 3cf2802de87c4997d65bb532b383bdfe 75503 admin optional debootstrap_1.0.111.tar.gz

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