Remove the documenation section on derived instances

The problem mentioned there doesn't exist in Haddock 2.0.0.0

1 files changed, 0 insertions, 32 deletions

diff --git a/doc/haddock.xml b/doc/haddock.xml
index c78fb662..ba3cb3e0 100644
--- a/doc/haddock.xml
+++ b/doc/haddock.xml
@@ -1280,38 +1280,6 @@ import B
 	point locally to <literal>C.T</literal>.</para>
     </section>
 
-    <section id="deriving">
-      <title>Derived instances</title>
-
-      <para>The <literal>deriving</literal> keyword in Haskell
-      presents a small problem for Haddock.  Lacking a full type
-      system, Haddock has to figure out what the shape of the derived
-      instance is.  There is currently a partial implementation of
-      this, but for some data types Haddock can't determine the shape
-      of the derived instance, and you see something like
-      &ldquo;???&rdquo; in the documentation.</para>
-
-      <para>One workaround for this is to use CPP (<xref linkend="cpp"
-      />) to give Haddock explicit instance headers.  Here is an
-      example from the OpenGL library:</para> 
-
-<programlisting>
-data VertexArrayDescriptor a =
-   VertexArrayDescriptor !NumComponents !DataType !Stride !(Ptr a)
-#ifdef __HADDOCK__
--- Help Haddock a bit, because it doesn't do any instance inference.
-instance Eq (VertexArrayDescriptor a)
-instance Ord (VertexArrayDescriptor a)
-instance Show (VertexArrayDescriptor a)
-#else
-   deriving ( Eq, Ord, Show )
-#endif
-</programlisting>
-
-      <para>As a rule of thumb, try <literal>deriving</literal> first,
-      and if that doesn't work then use the above workaround.</para>
-    </section>
-
     <section id="module-attributes">
       <title>Module Attributes</title>