| ... | ... | @@ -42,4 +42,5 @@ The development version of GHC adds a top-level declaration on the form: |
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```
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which produces the same instance as would be produced by a `deriving` clause in a `data` or `newtype` declaration, but allows this derivation to be decoupled from the datatype declaration, e.g. in another module. |
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which produces the same instance as would be produced by a `deriving` clause in a `data` or `newtype` declaration, but allows this derivation to be decoupled from the datatype declaration, e.g. in another module
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([ GHC documentation](http://www.haskell.org/ghc/dist/current/docs/users_guide/type-extensions.html#stand-alone-deriving)) |
