nest 2 (vcat [pprInstances ispecs, pprInstances unifiers])],
if not (isSingleton matches)
then -- Two or more matches
empty
else -- One match, plus some unifiers
ASSERT( not (null unifiers) )
nest 2 (vcat [pprInstances ispecs, pprInstances unifiers])],
if not (isSingleton matches)
then -- Two or more matches
empty
else -- One match, plus some unifiers
ASSERT( not (null unifiers) )