I tested an upgrade where I added gnome-software-plugin-snap to the ForcedObsoletes section of ubuntu-desktop and the following packages were marked for removal. (I did a diff of removed packages w/ and w/o that package in ForcedObsoletes.)
command-not-found-data example-content gcc-7-base imagemagick-6-common libalgorithm-diff-perl libart-2.0-2 libasan4 libboost-system1.65.1 libboost-thread1.65.1 libclass-xsaccessor-perl libcpanel-json-xs-perl libexempi3 libexiv2-14 libexporter-tiny-perl libfakeroot libfuture-perl libgtksourceview-3.0-common libgweather-3-15 libhunspell-1.6-0 libhwloc5 libilmbase12 libilmbase24 libio-async-perl libio-pty-perl libip4tc0 liblist-compare-perl liblqr-1-0 libmozjs-52-0 libnet-ip-perl libnss-myhostname libnumber-compare-perl liboauth0 libpackage-stash-xs-perl libplymouth4 libpython2.7 libraw16 libreoffice-avmedia-backend-gstreamer libreoffice-style-galaxy libstruct-dumb-perl libtest-fatal-perl libubsan0 libunicode-utf8-perl libusbmuxd4 libxapian30 libxml-libxml-perl libxml-namespacesupport-perl libxml-sax-base-perl libxml-sax-expat-perl libxml-sax-perl libxml-writer-perl libzeitgeist-2.0-0 light-themes linux-headers-5.4.0-42 linux-headers-5.4.0-42-generic linux-hwe-5.4-headers-5.4.0-47 linux-image-5.4.0-42-generic linux-modules-5.4.0-42-generic linux-modules-extra-5.4.0-42-generic python-talloc python3-asn1crypto python3-crypto python3-keyrings.alt python3-oauth python3-simplegeneric python3-zope.interface python3.6 python3.6-minimal qpdf t1utils ubuntu-sounds ubuntu-system-service xserver-xorg-hwe-18.04 xserver-xorg-input-all-hwe-18.04 xserver-xorg-input-libinput-hwe-18.04 xserver-xorg-video-ati-hwe-18.04 xserver-xorg-video-fbdev-hwe-18.04 xserver-xorg-video-intel-hwe-18.04 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1894919 Title: gnome-software-plugin-snap consider an unwanted removal for 20.04 ubuntu-desktop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1894919/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs