Hello, On Tue, 2025-03-04 at 15:52 +0000, Simon McVittie wrote: > Control: tags -1 + moreinfo > > On Tue, 04 Mar 2025 at 16:35:45 +0100, John Paul Adrian Glaubitz wrote: > > the package dbus-system-bus-common fails to install when the messagebus > > user already > > exists which seems to be the case on some systems: > > Specifically, it looks as though on the affected system, the messagebus > user exists outside the Debian-Policy-defined system user range 100-999 > (or possibly adduser is misidentifying it as being outside that range).
This is inside a schroot on a buildd and it looks like something recently changed, either with the dbus package or any other package. > Please provide details of the messagebus user/group? This should do it: > > getent passwd messagebus > getent group messagebus (sid-alpha-sbuild)root@alpha-sc-03:/# getent passwd messagebus messagebus:x:104:111::/nonexistent:/usr/sbin/nologin (sid-alpha-sbuild)root@alpha-sc-03:/# getent group messagebus messagebus:x:111: (sid-alpha-sbuild)root@alpha-sc-03:/# > > Setting up dbus-system-bus-common (1.16.2-1) ... > > fatal: The user `messagebus' already exists, but is not a system user. > > Exiting. > > dpkg: error processing package dbus-system-bus-common (--configure): > > installed dbus-system-bus-common package post-installation script > > subprocess returned error exit status 13 > > Setting up sbuild-build-depends-dose3-dummy (0.invalid.0) ... > > dpkg: dependency problems prevent configuration of dbus: > > dbus depends on dbus-system-bus-common (>= 1.16.2-1); however: > > Package dbus-system-bus-common is not configured yet. > > From the mention of sbuild-build-depends-dose3-dummy, I assume this is a > sbuild chroot, in which case /etc/passwd and /etc/group were probably > copied from the host system by sbuild. If so, running the commands above > on the host system is probably sufficient. Correct. This is on a buildd. See: https://buildd.debian.org/status/fetch.php?pkg=altos&arch=alpha&ver=1.9.19-4&stamp=1741107746&raw=0 > > The postinst script should probably check for the existance of the > > messagebus account > > instead of trying to create it unconditionally. > > If I understand correctly, the adduser maintainers' recommendation is > that, to the contrary, packages *should* invoke adduser unconditionally, > and let adduser decide what (if anything) it needs to do to arrange for > the desired state to exist. adduser maintainers: is that correct, or > am I misunderstanding? No idea. I'm just reporting a recent regression that affects multiple buildds and causes the installation of build dependencies to fail. Currently, it affects alpha, powerpc, ppc64 and sh4. See: https://buildd.debian.org/status/package.php?p=altos&suite=sid Look at number of attempted builds in the "logs" column. Adrian -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer `. `' Physicist `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
