`OverloadedStrings` for types

Is there any sense in adding

class IsSymbol a where
  type FromSymbol (str :: Symbol) :: a

instance IsSymbol ErrorMessage where
  type FromSymbol str = GHC.TypeLits.Text str

instance IsSymbol ErrorMessage where
  type FromSymbol str = str

where FromSymbol gets placed before type-level string literals:

TypeError ("Warning: ":<>:ShowType ty:<>:" is odd.")

analogous to Data.String.IsString.

Trac metadata

Trac field	Value
Version	7.10.3
Type	FeatureRequest
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
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