réinstaller spamassassin (perl cassé)

Spamassassin était cassé sur mon Ubuntu 20.10 et je ne peux pas le réinstaller.

J'ai fait

dpkg --purge spamassassin sa-compile spamc
deluser --remove-all-files debian-spamd
apt update
apt upgrade
apt install spamassassin

et je reçois des erreurs :

Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  sa-compile spamc
Suggested packages:
  razor libdbi-perl pyzor libencode-detect-perl libgeoip2-perl libnet-patricia-perl
  libbsd-resource-perl
The following NEW packages will be installed
  sa-compile spamassassin spamc
0 to upgrade, 3 to newly install, 0 to remove and 0 not to upgrade.
Need to get 0 B/1,235 kB of archives.
After this operation, 4,902 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Selecting previously unselected package spamassassin.
(Reading database ... 271754 files and directories currently installed.)
Preparing to unpack .../spamassassin_3.4.5~pre1-3_all.deb ...
Unpacking spamassassin (3.4.5~pre1-3) ...
Selecting previously unselected package sa-compile.
Preparing to unpack .../sa-compile_3.4.5~pre1-3_all.deb ...
Unpacking sa-compile (3.4.5~pre1-3) ...
Selecting previously unselected package spamc.
Preparing to unpack .../spamc_3.4.5~pre1-3_amd64.deb ...
Unpacking spamc (3.4.5~pre1-3) ...
Setting up spamc (3.4.5~pre1-3) ...
Setting up spamassassin (3.4.5~pre1-3) ...
Adding system user `debian-spamd' (UID 131) ...
Adding new group `debian-spamd' (GID 136) ...
Adding new user `debian-spamd' (UID 131) with group `debian-spamd' ...
Not creating home directory `/var/lib/spamassassin'.
Insecure dependency in sprintf while running with -T switch at /usr/lib/x86_64-linux-gnu/perl/5.30/Con
fig.pm line 62.
Compilation failed in require at /usr/lib/x86_64-linux-gnu/perl/5.30/lib.pm line 6.
BEGIN failed--compilation aborted at /usr/lib/x86_64-linux-gnu/perl/5.30/lib.pm line 6.
Compilation failed in require at /usr/bin/sa-update line 36.
BEGIN failed--compilation aborted at /usr/bin/sa-update line 36.
dpkg: error processing package spamassassin (--configure):
 installed spamassassin package post-installation script subprocess returned error exit status 255
dpkg: dependency problems prevent configuration of sa-compile:
 sa-compile depends on spamassassin; however:
  Package spamassassin is not configured yet.

dpkg: error processing package sa-compile (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates it's a follow-up error from a previous fa
ilure.
      Processing triggers for man-db (2.9.3-2) ...
Processing triggers for systemd (246.6-1ubuntu1.4) ...
Errors were encountered while processing:
 spamassassin
 sa-compile
E: Sub-process /usr/bin/dpkg returned an error code (1)

Comment installer le paquet Ubuntu spamassassin maintenant ?

J'ai également vérifié cela (sur une autre machine) : installer 20.04 LTS, mettre à niveau vers 20.10, installer spamassassin, cela fonctionne, donc le problème vient du nettoyage approprié.

L'installation qui fonctionne est équipée de Perl v5.30.3, tandis que celle qui ne fonctionne pas est équipée de Perl v5.30.0 (bien qu'elle soit à jour d'après le site web de la Commission européenne). apt update ).

Incohérence de la version de Perl sur l'Ubuntu non fonctionnelle :

sudo cpan
/usr/bin/cpan: Perl lib version (5.30.3) doesn't match executable     '/usr/bin/perl' version (5.30.0) at /usr/lib/x86_64-linux-gnu/perl/5.30/Config.pm line 62.

Compilation failed in require at /usr/share/perl/5.30/CPAN.pm line 44.

Comment mettre à jour l'installation de Perl