POSTIN

/bin/sh

update-alternatives --install /usr/libexec/gst-install-plugins-helper gst-install-plugins-helper /usr/libexec/pk-gstreamer-install 10

POSTUN

/bin/sh

if [ "$1" = "0" ]; then
    if ! [ -e /usr/libexec/pk-gstreamer-install ]; then
        update-alternatives --remove gst-install-plugins-helper /usr/libexec/pk-gstreamer-install
    fi
fi