GHC 8.2 does not accept British {-# LANGUAGE GeneralisedNewtypeDeriving #-} spelling
The GHC docs for GeneralisedNewtypeDeriving at (https://downloads.haskell.org/\~ghc/latest/docs/html/users_guide/glasgow_exts.html\#generalised-derived-instances-for-newtypes) suggest British spelling should be accepted, and indeed it's the preferred spelling in the docs. However GHC 8.2 throws an error. I haven't tested this against HEAD so if it's fixed there please feel free to close.
I know this is a bit picky but it's caught me out a few times and I couldn't see it previously reported (I may have missed it though).
Trac metadata
| Trac field | Value |
|---|---|
| Version | 8.2.2 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | lowest |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
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