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GenCannotDoRep1_1.hs:1:29: warning: [-Wdeprecated-flags (in -Wdefault)]
-XDatatypeContexts is deprecated: It was widely considered a misfeature, and has been removed from the Haskell language.
GenCannotDoRep1_1.hs:8:49: error: [GHC-30367]
• Can't make a derived instance of ‘Generic1 Context’:
Context must not have a datatype context
• In the data declaration for ‘Context’
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