On Sun, 8 Oct 2023 08:15:40 +0200 Helmut Grohne <hel...@subdivi.de> wrote: > Package: dhcpcd-base > Version: 9.4.1-24~deb12u2 > Severity: serious > Justification: file loss during upgrade > X-Debbugs-Cc: debian-rele...@lists.debian.org > User: helm...@debian.org > Usertags: dep17p1 > > Unfortunately, the stable update of dhcpcd5 introduced a regression > relevant to upgrades from bullseye. The bullseye dhcpcd5 package > contained the files > - /lib/dhcpcd/dhcpcd-hooks/01-test > - /lib/dhcpcd/dhcpcd-hooks/20-resolv.conf > - /lib/dhcpcd/dhcpcd-hooks/30-hostname > - /lib/dhcpcd/dhcpcd-hooks/60-ntp-common.conf > - /lib/dhcpcd/dhcpcd-hooks/62-chrony.conf > - /lib/dhcpcd/dhcpcd-hooks/64-timesyncd.conf > - /lib/dhcpcd/dhcpcd-hooks/68-openntpd.conf > - /lib/dhcpcd/dhcpcd-run-hooks > and these have been moved into dhcpcd-base in that particular stable > update. The update correctly declares Replaces for this. Unfortunately, > it also moves these files from /lib to /usr/lib. Therefore, the declared > Replaces have no effect (regarding these files) and as a consequence, an > upgrade may delete the affected files.
That doesn't hold water. Moving files to the base package doesn't delete them. > mmdebstrap bullseye /dev/null --variant=apt --include dhcpcd5 > --chrooted-customize-hook='sed -i -e s/bullseye/bookworm/ > /etc/apt/sources.list && apt update && apt-get install -y libc6 usrmerge && > apt-get download dhcpcd-base && dpkg --auto-deconfigure --unpack > ./dhcpcd-base_*.deb && dpkg -r dhcpcd5 && ls /usr/lib/dhcpcd/dhcpcd-hooks' > > If you run this, it ends with: > > | Selecting previously unselected package dhcpcd-base. > | dpkg: considering deconfiguration of dhcpcd5, which would be broken by > installation of dhcpcd-base ... > | dpkg: yes, will deconfigure dhcpcd5 (broken by dhcpcd-base) > | (Reading database ... 6731 files and directories currently installed.) > | Preparing to unpack .../dhcpcd-base_9.4.1-24~deb12u2_amd64.deb ... > | De-configuring dhcpcd5 (7.1.0-2+b1) ... > | Unpacking dhcpcd-base (9.4.1-24~deb12u2) ... > | Replacing files in old package dhcpcd5 (7.1.0-2+b1) ... > | (Reading database ... 6752 files and directories currently installed.) > | Removing dhcpcd5 (7.1.0-2+b1) ... > | ls: cannot access '/usr/lib/dhcpcd/dhcpcd-hooks': No such file or directory > > This kind of problem has been categorized in the > https://subdivi.de/~helmut/dep17.html as P1 and the recommended > mitigation M7 is changing Breaks+Replaces to Conflicts. I think this > mitigation is fully applicable here, because apt will by default unpack > the updated dhcpcd5 package first and then the conflict is resolved. The > additional constraint is satisfied by the default solution of apt. Thus changing fields from what to what? Martin-Éric
