Package: mon Version: 1.4.1-1 Severity: serious Your package has a preinst maintainer script, calling adduser. At the same time, your package Depends: adduser, but does not Pre-Depends: adduser. Installing your package fails when adduser is not yet configured.
Reproducer: $ mmdebstrap --variant=essential --include=mon unstable /dev/null ... Selecting previously unselected package mon-client. Preparing to unpack .../22-mon-client_1.2.0-3_all.deb ... Unpacking mon-client (1.2.0-3) ... Selecting previously unselected package mon. Preparing to unpack .../23-mon_1.4.1-1_arm64.deb ... Creating user 'mon' ... warn: `/etc/adduser.conf' does not exist. Using defaults. Insecure $ENV{PATH} while running with -T switch at /usr/share/perl5/Debian/AdduserLogging.pm line 161. dpkg: error processing archive /tmp/apt-dpkg-install-eLquvp/23-mon_1.4.1-1_arm64.deb (--unpack): new mon package pre-installation script subprocess returned error exit status 25 Errors were encountered while processing: /tmp/apt-dpkg-install-eLquvp/23-mon_1.4.1-1_arm64.deb You may consider replacing adduser with a sysusers fragment, see https://manpages.debian.org/unstable/debhelper/dh_installsysusers.1.en.html Otherwise, please Pre-Depend on adduser. Best, Chris