Package: pdftk-java Version: 0.0.0+20180620.1-1 Severity: important pdftk-java does not depend on a JRE, but it requires one to work:
mdonges@cindy:~$ pdftk /usr/bin/pdftk: 5: /usr/bin/pdftk: java: not found When I install default-jre-headless plus its dependencies, it works fine: mdonges@cindy:~$ pdftk SYNOPSIS pdftk <input PDF files | - | PROMPT> […] Please fix the dependencies. -- System Information: Debian Release: buster/sid APT prefers testing APT policy: (450, 'testing'), (450, 'stable'), (400, 'unstable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.17.0-1-amd64 (SMP w/8 CPU cores) Locale: LANG=C.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=C.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages pdftk-java depends on: ii libbcprov-java 1.60-1 ii libcommons-lang3-java 3.7-1 pdftk-java recommends no packages. Versions of packages pdftk-java suggests: ii poppler-utils [xpdf-utils] 0.63.0-2 -- no debconf information