POSTUN

/bin/sh

if [ $1 -eq 0 ]; then
  alternatives --remove unison \
    /usr/bin/unison-2.27
fi
exit 0

POSTTRANS

/bin/sh

alternatives \
  --install \
  /usr/bin/unison \
  unison \
  /usr/bin/unison-2.27 \
  2027000

# Clean up after previous package version's incorrect alternatives usage.
alternatives --remove unison-icon \
  /usr/share/pixmaps/unison-2.27.png || :
alternatives --remove unison-desktop \
  /usr/share/applications/fedora-unison-2.27.desktop || :