digitallyinduced/ihp
`Could not deduce (IsString string0)` when using logger (from v0.10.0 onwards)
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#927 ouverte le 20 juin 2021
enhancementgood first issue
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Description
Upon upgrading from 0.9.0 to 0.10.0 I get an error on this:
Log.debug "Some log message"
The error:
• Could not deduce (IsString string0)
arising from the literal '"Some log message"'
...
The type variable 'string0' is ambiguous
These potential instances exist:
instance IsString Value
-- Defined in 'aeson-1.5.4.1:Data.Aeson.Types.Internal'
instance IsString ByteString
-- Defined in 'Data.ByteString.Internal'
instance (a ~ Char) => IsString (Seq a)
-- Defined in 'Data.Sequence.Internal'
...plus four others
...plus 37 instances involving out-of-scope types
(use -fprint-potential-instances to see them all)
Doing this works:
Log.debug ("Some log message" :: Text)
But that's a bit annoying to do everywhere. Anything smart I can do with my imports or something to avoid having to do that? Or must I be doing something weird to get this error in the first place?
Ref https://ihpframework.slack.com/archives/C01DQE0F4F8/p1624128600130600