Package: src:util-linux Version: 2.29.2-4 Severity: normal Hi! I'm afraid that current dpkg-gencontrol doesn't support the "Important:" field. It throws a warning then ignores it. But, you can make it add whatever you wish by giving it a X[BSC]*- prefix.
In this case, binary:mount and binary:fdisk should have: XB-Important: yes "man deb-src-control" has more information; thanks to Bastian Blank for a better solution than my sed hack. Meow! -- System Information: Debian Release: buster/sid APT prefers unstable-debug APT policy: (500, 'unstable-debug'), (500, 'unstable'), (500, 'testing'), (150, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.13.0-rc6-debug-ubsan-00198-gafd58c2be315 (SMP w/6 CPU cores) Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE=C.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: sysvinit (via /sbin/init)