Bug#974552: upgrade-reports: libc6/libcrypt split breaks perl during buster->bullseye upgrade

[Niels Thykier]

Control: reassign -1 perl-base
Control: affects -1 upgrade-reports
Control: severity -1 grave

Hi Perl team,

I have reassigned this bug to perl because perl-base being essential
must remain functional during an upgrade and AFAICT perl-base fails in
this case here.

If it is a direct linkage, then you might be needing a Pre-Depends.  If
it is an indirect linkage then I am not sure how to fix it. :-/

~Niels

Alois Wohlschlager:
> Package: upgrade-reports
> Severity: critical
> Justification: breaks the whole system
> X-Debbugs-Cc: alois1 at gmx-topmail.de
> 
> Dear Maintainer,
> 
> *** Reporter, please consider answering these questions, where appropriate ***
> 
>    * What led up to the situation?
> 
>    Do an upgrade from buster to bullseye.
> 
> 
>    * What exactly did you do (or not do) that was effective (or
>      ineffective)?
> 
>    1. adjust sources.list
>    2. apt upgrade
>    3. apt dist-upgrade
> 
>    * What was the outcome of this action?
> 
>    apt dist-upgrade goes horribly wrong. Excerpt from the log:
> 
> ---
> Entpacken von libc6:amd64 (2.31-4) über (2.28-10) ...
> Vormals nicht ausgewähltes Paket libc6:i386 wird gewählt.
> Vorbereitung zum Entpacken von .../4-libc6_2.31-4_i386.deb ...
> Entpacken von libc6:i386 (2.31-4) ...
> Vormals nicht ausgewähltes Paket libgcc-s1:i386 wird gewählt.
> Vorbereitung zum Entpacken von .../5-libgcc-s1_10.2.0-16_i386.deb ...
> Entpacken von libgcc-s1:i386 (10.2.0-16) ...
> Vormals nicht ausgewähltes Paket gcc-10-base:i386 wird gewählt.
> Vorbereitung zum Entpacken von .../6-gcc-10-base_10.2.0-16_i386.deb ...
> Entpacken von gcc-10-base:i386 (10.2.0-16) ...
> /usr/bin/perl: error while loading shared libraries: libcrypt.so.1: cannot open
> shared object file: No such file or directory
> dpkg: Fehler: Fehler beim Ausführen des Hooks »if [ -x /usr/share/debian-
> security-support/check-support-status.hook ] ; then /usr/sh
> are/debian-security-support/check-support-status.hook ; fi«, Exitkode 32512
> ---
> 
>    At this point, perl is still the version from buster, and libcrypt1 is not
> yet installed. The missing libcrypt.so.1 also completely breaks PAM, so login
> and sudo don't work any more.
>    To recover from this outcome, I had to boot with "init=/bin/sh", install the
> libcrypt1 package with dpkg and run "apt -f install" twice. This rendered the
> system operational again and a further "apt dist-upgrade" ran through smoothly.
> 
>    * What outcome did you expect instead?
> 
>    libcrypt1 is installed before libcrypt.so.1 is required again, so the dist-
> upgrade can proceed normally.
> 
> [...]