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T4272.hs:15:26:
Could not deduce (a ~ TermFamily a a)
from the context (TermLike a)
bound by the type signature for
laws :: TermLike a => TermFamily a a -> b
at T4272.hs:14:9-53
‘a’ is a rigid type variable bound by
the type signature for laws :: TermLike a => TermFamily a a -> b
at T4272.hs:14:16
Expected type: TermFamily a (TermFamily a a)
Actual type: TermFamily a a
Relevant bindings include
t :: TermFamily a a (bound at T4272.hs:15:6)
laws :: TermFamily a a -> b (bound at T4272.hs:15:1)
In the first argument of ‘terms’, namely
‘(undefined :: TermFamily a a)’
In the second argument of ‘prune’, namely
‘(terms (undefined :: TermFamily a a))’
In the expression: prune t (terms (undefined :: TermFamily a a))
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