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T15076.hs:13:11: warning: [-Wpartial-type-signatures (in -Wdefault)]
• Found type wildcard ‘_’ standing for ‘Proxy f’
Where: ‘f’, ‘a’ are rigid type variables bound by
the type signature for:
foo :: forall a (f :: forall (x :: a). Proxy x -> *). Proxy f -> ()
at T15076.hs:(10,1)-(12,20)
• In a pattern type signature: _
In the pattern: _ :: _
In an equation for ‘foo’: foo (_ :: _) = ()
• Relevant bindings include
foo :: Proxy f -> () (bound at T15076.hs:13:1)
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