Missing documentation for -Wderiving-typeable
I enabled -Weverything
out of curiosity and got the following warning:
src/Data/Text/Prettyprint/Doc/Internal.hs:129:24: warning: [-Wderiving-typeable]
• Deriving ‘Typeable’ has no effect: all types now auto-derive Typeable
• In the data declaration for ‘Doc’
|
129 | deriving (Generic, Typeable)
| ^^^^^^^^
I was wondering since which GHC version Typeable
is auto-derived, but couldn't find any documentation at all at https://downloads.haskell.org/~ghc/8.10.1-rc1/docs/html/users_guide/using-warnings.html.