POSTIN
/bin/sh
update-alternatives --install /usr/bin/xsidplay xsidplay /usr/bin/xsidplay-libsidplay2 20
POSTUN
/bin/sh
[ $1 = 0 ] || exit 0 update-alternatives --remove xsidplay /usr/bin/xsidplay-libsidplay2
/bin/sh
update-alternatives --install /usr/bin/xsidplay xsidplay /usr/bin/xsidplay-libsidplay2 20
/bin/sh
[ $1 = 0 ] || exit 0 update-alternatives --remove xsidplay /usr/bin/xsidplay-libsidplay2