POSTIN

/bin/sh

( cd /usr/share/doc/ghc/libraries && [ -x "./gen_contents_index" ] && ./gen_contents_index ) || :

POSTUN

/bin/sh

if [ "$1" -eq 0 ] ; then
  ( cd /usr/share/doc/ghc/libraries && [ -x "./gen_contents_index" ] && ./gen_contents_index ) || :
fi