prerm is in tachyon-bin-nox 0.99~b6+dsx-4.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | #!/bin/sh
set -e
VARIANT=nox
remove_variant_alternative () {
	local variant=$1
	update-alternatives --remove tachyon /usr/bin/tachyon-${variant}
	return 0
	}
case $1 in
	remove|deconfigure) remove_variant_alternative $VARIANT ;;
	upgrade|failed-upgrade) ;;
	*) echo "prerm called with unknown argument \`$1'" >&2 ; exit 0 ;;
esac
exit 0
 |