hackage-repo-tool: Fix a compile warning. #217
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The warning was: • The constraint ‘ToJSON WriteJSON (Signed a)’ matches an instance declaration instance (Monad m, ToJSON m a) => ToJSON m (Signed a) -- Defined in ‘hackage-security-0.5.3.0:Hackage.Security.TUF.Signed’ This makes type inference for inner bindings fragile; either use MonoLocalBinds, or simplify it using the instance Fixed by simplifying using the instance.
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| I'm not sure this is a proper fix; I'd like to hear from @edsko what his type-safety intention was here... |
edsko approved these changes Aug 6, 2018
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Don't quite understand the rationale behind this warning, but I think this fix is fine.
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| Alright, thanks! :-) |
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| For the record, the motivation for this warning is described in |
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The warning was:
Fixed by simplifying using the instance.