Bug#962030: perl-base tried to uninstall a large set of packages

[Jonathan Marsaud]

Package: perl-base
Version: 5.30.2-1
Severity: important

Dear Maintainer,

   * What led up to the situation?
	- apt update && apt full-upgrade

   * What exactly did you do (or not do) that was effective (or
     ineffective)?
	- apt upgrade instead of full-upgrade, keeping perl-base unupgraded

   * What was the outcome of this action?
	- perl-base is marked as "keeped" and is not upgraded

   * What outcome did you expect instead?
	- perl-base should upgrade without uninstalling a large set of packages like apache2, build-essential, or debhelper.

   * Full logs :

```
zic at excalibur:~$ LANG=C sudo apt full-upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
  autopoint diffstat dwz ed fakeroot fwupd fwupd-amd64-signed gettext gir1.2-packagekitglib-1.0 git-man gnome-software-common libappstream-glib8 libaprutil1-dbd-sqlite3 libaprutil1-ldap libcroco3 libfakeroot
  libflashrom1 libfreetype-dev libfreetype6-dev libftdi1-2 libfwupd2 libfwupdplugin1 libgcab-1.0-0 libgeoip1 libice-dev libjbig-dev libjpeg-dev libjpeg62-turbo-dev liblzma-dev libpng-dev libpthread-stubs0-dev
  libsm-dev libsmbios-c2 libtiff-dev libtiffxx5 libtss2-esys0 libvpx-dev libx11-dev libxau-dev libxcb1-dev libxdmcp-dev libxmlb1 libxpm-dev libxt-dev patch perl-openssl-defaults python3-distro-info
  python3-software-properties sgml-base software-properties-common software-properties-gtk tpm-udev unattended-upgrades x11proto-core-dev x11proto-dev xml-core xorg-sgml-doctools xtrans-dev
Use 'sudo apt autoremove' to remove them.
The following packages will be REMOVED:
  apache2-bin autoconf automake build-essential debhelper dh-autoreconf dh-strip-nondeterminism docbook-xml dpkg-dev geoip-bin git gnome gnome-core gnome-software gnome-user-share intltool-debian
  libalgorithm-diff-perl libalgorithm-diff-xs-perl libalgorithm-merge-perl libapache2-mod-dnssd libarchive-zip-perl libauthen-sasl-perl libcairo-gobject-perl libcairo-perl libclone-perl libdata-dump-perl
  libdebhelper-perl libdpkg-perl libencode-locale-perl liberror-perl libextutils-depends-perl libextutils-pkgconfig-perl libfile-basedir-perl libfile-desktopentry-perl libfile-fcntllock-perl
  libfile-listing-perl libfile-mimeinfo-perl libfile-stripnondeterminism-perl libfont-afm-perl libfontconfig-dev libgd-dev libgeoip-dev libglib-object-introspection-perl libglib-perl libgtk3-perl
  libhtml-form-perl libhtml-format-perl libhtml-parser-perl libhtml-tagset-perl libhtml-tree-perl libhttp-cookies-perl libhttp-daemon-perl libhttp-date-perl libhttp-message-perl libhttp-negotiate-perl
  libio-html-perl libio-socket-ssl-perl libio-stringy-perl libipc-system-simple-perl liblwp-mediatypes-perl liblwp-protocol-https-perl libmailtools-perl libnet-dbus-perl libnet-http-perl libnet-smtp-ssl-perl
  libnet-ssleay-perl libnetaddr-ip-perl libnghttp2-dev libperl-dev libperl4-corelibs-perl libsub-override-perl libtie-ixhash-perl libtimedate-perl libtry-tiny-perl liburi-perl libwww-perl
  libwww-robotrules-perl libx11-protocol-perl libxml-parser-perl libxml-twig-perl libxml-xpathengine-perl perl pkg-config po-debconf quilt sane-utils sgml-data tig update-inetd
The following packages will be upgraded:
  perl-base
1 upgraded, 0 newly installed, 89 to remove and 0 not upgraded.
Need to get 1576 kB of archives.
After this operation, 94.6 MB disk space will be freed.
Do you want to continue? [Y/n] n
Abort.
```

-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.6.0-2-amd64 (SMP w/8 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8), LANGUAGE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages perl-base depends on:
ii  dpkg       1.19.7
ii  libc6      2.30-8
ii  libcrypt1  1:4.4.16-1

perl-base recommends no packages.

Versions of packages perl-base suggests:
ii  perl            5.30.2-1
ii  sensible-utils  0.0.12+nmu1

-- no debconf information