Hi, by following the instructions at: https://www.collaboraoffice.com/code/ to add and use the Debian 8 repositories the following is shown on this specific system during the installation of loolwsd_2.1.2-6: /var/lib/dpkg/info/loolwsd.postinst: 7: /var/lib/dpkg/info/loolwsd.postinst: setcap: not found /var/lib/dpkg/info/loolwsd.postinst: 8: /var/lib/dpkg/info/loolwsd.postinst: setcap: not found It seems that system missed the package "libcap2-bin" which is providing the setcap binary. To make sure this binary is installed it might be useful to add a dependency to "libcap2-bin" to this package.
Andras Timar committed a patch related to this issue. It has been pushed to "master": http://cgit.freedesktop.org/libreoffice/online/commit/?id=f55d3583bec6d579b3aedef226552c070c022c0d tdf#108753 postinstall script uses setcap, package should depend on libcap2-bin
Andras Timar committed a patch related to this issue. It has been pushed to "libreoffice-5-4": http://cgit.freedesktop.org/libreoffice/online/commit/?id=25d27d3764c0c4de8aa95b26e6068e3cb144442c&h=libreoffice-5-4 tdf#108753 postinstall script uses setcap, package should depend on libcap2-bin