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T4485.hs:47:15:
Overlapping instances for EmbedAsChild
(IdentityT IO) (XMLGenT m0 (XML m0))
arising from a use of `asChild'
Matching instances:
instance [overlap ok] (m1 ~ m, EmbedAsChild m c) =>
EmbedAsChild m (XMLGenT m1 c)
-- Defined at T4485.hs:29:10-68
instance [overlap ok] EmbedAsChild
(IdentityT IO) (XMLGenT Identity ())
-- Defined at T4485.hs:42:10-58
(The choice depends on the instantiation of `m0'
To pick the first instance above, use -XIncoherentInstances
when compiling the other instance declarations)
In the expression: asChild
In the expression: asChild $ (genElement "foo")
In an equation for `asChild':
asChild b = asChild $ (genElement "foo")
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