p/haskell-gstreamer/debian/libghc-gstreamer-dev.preinst


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#!/bin/sh

set -e

#DEBHELPER#

if [ "$1" = "upgrade" ]
then
    ghc-pkg unregister --force gstreamer-`echo $2 | sed 's/-.*//'` \
        > /dev/null 2>&1 \
        || true
fi