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T10503.hs:8:6: error:
• Could not deduce: k ~ *
from the context: Proxy 'KProxy ~ Proxy 'KProxy
bound by a type expected by the context:
(Proxy 'KProxy ~ Proxy 'KProxy) => r
at T10503.hs:8:6-85
‘k’ is a rigid type variable bound by
the type signature for:
h :: forall k r. ((Proxy 'KProxy ~ Proxy 'KProxy) => r) -> r
at T10503.hs:8:6-85
• In the ambiguity check for ‘h’
To defer the ambiguity check to use sites, enable AllowAmbiguousTypes
In the type signature:
h :: forall r.
(Proxy ('KProxy :: KProxy k) ~ Proxy ('KProxy :: KProxy *) => r)
-> r
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