DPkg::Pre-Install-Pkgs { "if [ -x /usr/bin/etckeeper ]; then etckeeper pre-install; fi"; };
DPkg::Post-Invoke      { "if [ -x /usr/bin/etckeeper ]; then etckeeper post-install; fi"; };

RPM::Pre-Install-Pkgs { "if [ -x /usr/bin/etckeeper ]; then etckeeper pre-install; fi"; };
RPM::Post-Invoke      { "if [ -x /usr/bin/etckeeper ]; then etckeeper post-install; fi"; };