I verified this fix using ubuntu-release-upgrader 1:25.04.15 from plucky-proposed:
root@o:~# cat > /etc/apt/sources.list.d/code.sources << EOF Types: deb URIs: https://packages.microsoft.com/repos/code Suites: stable Components: main Signed-By: . -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.4.7 (GNU/Linux) . mQENBFYxWIwBCADAKoZhZlJxGNGWzqV+1OG1xiQeoowKhssGAKvd+buXCGISZJwT LXZqIcIiLP7pqdcZWtE9bSc7yBY2MalDp9Liu0KekywQ6VVX1T72NPf5Ev6x6DLV 7aVWsCzUAF+eb7DC9fPuFLEdxmOEYoPjzrQ7cCnSV4JQxAqhU4T6OjbvRazGl3ag OeizPXmRljMtUUttHQZnRhtlzkmwIrUivbfFPD+fEoHJ1+uIdfOzZX8/oKHKLe2j H632kvsNzJFlROVvGLYAk2WRcLu+RjjggixhwiB+Mu/A8Tf4V6b+YppS44q8EvVr M+QvY7LNSOffSO6Slsy9oisGTdfE39nC7pVRABEBAAG0N01pY3Jvc29mdCAoUmVs ZWFzZSBzaWduaW5nKSA8Z3Bnc2VjdXJpdHlAbWljcm9zb2Z0LmNvbT6JATUEEwEC AB8FAlYxWIwCGwMGCwkIBwMCBBUCCAMDFgIBAh4BAheAAAoJEOs+lK2+EinPGpsH /32vKy29Hg51H9dfFJMx0/a/F+5vKeCeVqimvyTM04C+XENNuSbYZ3eRPHGHFLqe MNGxsfb7C7ZxEeW7J/vSzRgHxm7ZvESisUYRFq2sgkJ+HFERNrqfci45bdhmrUsy 7SWw9ybxdFOkuQoyKD3tBmiGfONQMlBaOMWdAsic965rvJsd5zYaZZFI1UwTkFXV KJt3bp3Ngn1vEYXwijGTa+FXz6GLHueJwF0I7ug34DgUkAFvAs8Hacr2DRYxL5RJ XdNgj4Jd2/g6T9InmWT0hASljur+dJnzNiNCkbn9KbX7J/qK1IbR8y560yRmFsU+ NdCFTW7wY0Fb1fWJ+/KTsC4= =J6gs -----END PGP PUBLIC KEY BLOCK----- EOF root@o:~# apt update && apt upgrade -y Hit:1 http://security.ubuntu.com/ubuntu oracular-security InRelease Hit:2 http://archive.ubuntu.com/ubuntu oracular InRelease Get:3 https://packages.microsoft.com/repos/code stable InRelease [3590 B] Hit:4 http://archive.ubuntu.com/ubuntu oracular-updates InRelease Get:5 https://packages.microsoft.com/repos/code stable/main amd64 Packages [19.3 kB] Hit:6 http://archive.ubuntu.com/ubuntu oracular-backports InRelease Fetched 22.9 kB in 0s (52.3 kB/s) 53 packages can be upgraded. Run 'apt list --upgradable' to see them. Upgrading: apport gnupg-l10n gpgconf libdw1t64 libplymouth5 openssh-sftp-server plymouth python3-problem-report sosreport vim-runtime apport-core-dump-handler gnupg-utils gpgsm libelf1t64 libxslt1.1 pci.ids plymouth-theme-ubuntu-text python3-software-properties tzdata vim-tiny cloud-init gpg gpgv libexpat1 linux-base perl python3-apport rsyslog ubuntu-release-upgrader-core xxd dirmngr gpg-agent keyboxd liblzma5 openssh-client perl-base python3-distupgrade snapd vim xz-utils gnupg gpg-wks-client libarchive13t64 libperl5.38t64 openssh-server perl-modules-5.38 python3-jinja2 software-properties-common vim-common Not upgrading yet due to phasing: libnetplan1 netplan-generator netplan.io python3-netplan Summary: Upgrading: 49, Installing: 0, Removing: 0, Not Upgrading: 4 32 standard LTS security updates Download size: 60.5 MB Space needed: 708 kB / 33.0 GB available [...SNIP...] root@o:~# apt install code -y Installing: code Installing dependencies: adwaita-icon-theme libasound2-data libdrm-intel1 libgl1-amber-dri libhttp-date-perl libnet-dbus-perl liburi-perl libxcb-shm0 libxt6t64 alsa-topology-conf libasound2t64 libdrm-nouveau2 libgl1-mesa-dri libhttp-message-perl libnet-http-perl libvulkan1 libxcb-sync1 libxtst6 alsa-ucm-conf libatk-bridge2.0-0t64 libdrm-radeon1 libglapi-mesa libhttp-negotiate-perl libnet-smtp-ssl-perl libwayland-client0 libxcb-xfixes0 libxv1 at-spi2-common libatk1.0-0t64 libegl-mesa0 libgles2 libice6 libnet-ssleay-perl libwayland-cursor0 libxcomposite1 libxxf86dga1 at-spi2-core libatspi2.0-0t64 libegl1 libglvnd0 libio-html-perl libpango-1.0-0 libwayland-egl1 libxcursor1 libxxf86vm1 cpp libauthen-sasl-perl libencode-locale-perl libglx-mesa0 libio-socket-ssl-perl libpangocairo-1.0-0 libwayland-server0 libxdamage1 luit cpp-14 libavahi-client3 libepoxy0 libglx0 libio-stringy-perl libpangoft2-1.0-0 libwebp7 libxfixes3 mesa-libgallium cpp-14-x86-64-linux-gnu libavahi-common-data libfile-basedir-perl libgraphite2-3 libipc-system-simple-perl libpciaccess0 libwww-perl libxft2 mesa-vulkan-drivers cpp-x86-64-linux-gnu libavahi-common3 libfile-desktopentry-perl libgtk-3-0t64 libisl23 libpixman-1-0 libwww-robotrules-perl libxi6 perl-openssl-defaults dconf-gsettings-backend libcairo-gobject2 libfile-listing-perl libgtk-3-bin libjbig0 librsvg2-2 libx11-protocol-perl libxinerama1 ubuntu-mono dconf-service libcairo2 libfile-mimeinfo-perl libgtk-3-common libjpeg-turbo8 librsvg2-common libx11-xcb1 libxkbfile1 x11-common fontconfig libclone-perl libfont-afm-perl libharfbuzz0b libjpeg8 libsharpyuv0 libxaw7 libxml-parser-perl x11-utils fontconfig-config libcolord2 libfontconfig1 libhtml-form-perl liblcms2-2 libsm6 libxcb-dri2-0 libxml-twig-perl x11-xserver-utils fonts-dejavu-core libcups2t64 libfreetype6 libhtml-format-perl liblerc4 libthai-data libxcb-dri3-0 libxml-xpathengine-perl xdg-utils fonts-dejavu-mono libdata-dump-perl libgbm1 libhtml-parser-perl libllvm19 libthai0 libxcb-glx0 libxmu6 zutty gsettings-desktop-schemas libdatrie1 libgdk-pixbuf-2.0-0 libhtml-tagset-perl liblwp-mediatypes-perl libtie-ixhash-perl libxcb-present0 libxpm4 gtk-update-icon-cache libdconf1 libgdk-pixbuf2.0-bin libhtml-tree-perl liblwp-protocol-https-perl libtiff6 libxcb-randr0 libxrandr2 hicolor-icon-theme libdeflate0 libgdk-pixbuf2.0-common libhttp-cookies-perl libmailtools-perl libtimedate-perl libxcb-render0 libxrender1 humanity-icon-theme libdrm-amdgpu1 libgl1 libhttp-daemon-perl libmpc3 libtry-tiny-perl libxcb-shape0 libxshmfence1 Suggested packages: cpp-doc alsa-utils libgssapi-perl gvfs libcrypt-ssleay-perl libbusiness-isbn-perl libunicode-map8-perl debhelper cairo-5c gcc-14-locales libasound2-plugins colord libio-compress-brotli-perl librsvg2-bin libregexp-ipv6-perl libunicode-string-perl mesa-utils xorg-docs-core cpp-14-doc libdigest-hmac-perl cups-common liblcms2-utils libsub-name-perl libauthen-ntlm-perl xml-twig-tools nickle Summary: Upgrading: 0, Installing: 168, Removing: 0, Not Upgrading: 4 Download size: 195 MB Space needed: 825 MB / 33.0 GB available [...SNIP...] Note that https://changelogs.ubuntu.com/meta-release-proposed currently has plucky marked Supported: 1, so we can actually use the --proposed flag to test. root@o:~# do-release-upgrade --proposed Checking for a new Ubuntu release = Welcome to Ubuntu 25.04 'Plucky Puffin' = The Ubuntu team is proud to announce Ubuntu 25.04 'Plucky Puffin'. To see what's new in this release, visit: https://wiki.ubuntu.com/PluckyPuffin/ReleaseNotes Ubuntu is a Linux distribution for your desktop or server, with a fast and easy install, regular releases, a tight selection of excellent applications installed by default, and almost any other software you can imagine available through the network. We hope you enjoy Ubuntu. == Feedback and Helping == If you would like to help shape Ubuntu, take a look at the list of ways you can participate at https://ubuntu.com/community/contribute Your comments, bug reports, patches and suggestions will help ensure that our next release is the best release of Ubuntu ever. If you feel that you have found a bug please read: https://help.ubuntu.com/community/ReportingBugs Then report bugs using apport in Ubuntu. For example: ubuntu-bug linux will open a bug report in Launchpad regarding the linux package. If you have a question, or if you think you may have found a bug but aren't sure, first try to reach out on one of the communication channels. Matrix is the go-to for instant chatting, while Discourse would be more approriate for long discussions in a more asynchronous way. Otherwise you can still join the #ubuntu IRC channel on Libera.Chat, send an email to the Ubuntu Users mailing list, or find some help on the Ubuntu forums: https://ubuntu.com/community/communications/matrix https://discourse.ubuntu.com/ https://help.ubuntu.com/community/InternetRelayChat https://lists.ubuntu.com/mailman/listinfo/ubuntu-users https://ubuntuforums.org/ == More Information == You can find out more about Ubuntu on our website, IRC channel and wiki. If you're new to Ubuntu, please visit: https://ubuntu.com/ To sign up for future Ubuntu announcements, please subscribe to Ubuntu's very low volume announcement list at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-announce Continue [yN] y [...SNIP...] Searching for obsolete software Reading state information... Done Remove obsolete packages? 27 packages are going to be removed. Continue [yN] Details [d]d Remove (was auto installed) humanity-icon-theme libapt-pkg6.0t64 libassuan0 libdrm-nouveau2 libdrm-radeon1 libdw1t64 libfwupd2 libgl1-amber-dri libglapi-amber libgusb2 libicu74 libmodule-scandeps-perl libnl-genl-3-200 libnsl2 libperl5.38t64 libpython3.12-minimal libpython3.12-stdlib libpython3.12t64 libsgutils2-1.46-2 libxcb-dri2-0 perl-modules-5.38 python3-colorama python3.12 python3.12-gdbm python3.12-minimal sosreport ubuntu-mono Continue [yN] Details [d] After noting that code was not going to be removed, I continued the upgrade. At the end, I checked the following: root@o:~# grep "Foreign.*" /var/log/dist-upgrade/main.log 2025-04-25 14:14:49,246 DEBUG Foreign (before rewriting sources): code 2025-04-25 14:14:49,246 DEBUG Foreign (after rewriting sources): root@o:~# apt policy code code: Installed: 1.99.3-1744761595 Candidate: 1.99.3-1744761595 Version table: *** 1.99.3-1744761595 100 100 /var/lib/dpkg/status ** Tags removed: verification-needed verification-needed-plucky ** Tags added: verification-done verification-done-plucky -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2107657 Title: upgrades to plucky incorrectly remove foreign packages from disabled sources To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/2107657/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
