preinst is in libghc-gtkglext-dev 0.12.1-4.
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 | #!/bin/sh
set -e
if [ "$1" = "upgrade" ]
then
ghc-pkg unregister gtkglext-`echo $2 | sed 's/-.*//'` > /dev/null 2>&1 || true
fi
|