PREUN
/bin/sh
/usr/sbin/alternatives --remove scheme-script \ /usr/bin/ikarus-scheme-script || :
POSTTRANS
/bin/sh
/usr/sbin/alternatives --install /usr/bin/scheme-script \ scheme-script /usr/bin/ikarus-scheme-script 80 || :
/bin/sh
/usr/sbin/alternatives --remove scheme-script \ /usr/bin/ikarus-scheme-script || :
/bin/sh
/usr/sbin/alternatives --install /usr/bin/scheme-script \ scheme-script /usr/bin/ikarus-scheme-script 80 || :