New patches:

[removed (->) instance from Data.Data
jpm@cs.uu.nl**20081006075254] {
hunk ./Data/Data.hs 1139
-
-
---
--- A last resort for functions
---
-
-instance (Data a, Data b) => Data (a -> b) where
-  toConstr _   = error "toConstr"
-  gunfold _ _  = error "gunfold"
-  dataTypeOf _ = mkNorepType "Prelude.(->)"
-  dataCast2 f  = gcast2 f
-
-
-------------------------------------------------------------------------------
}

Context:

[added new module Data.Data
'Jose Pedro Magalhaes <jpm@cs.uu.nl>'**20081002140535
 
 The new Data.Data module contains all of Data.Generics.Basics 
 and most of Data.Generics.Instances. The missing instances were 
 deemed dubious and moved to the syb package.
] 
[add new Data.Data module
'Jose Pedro Magalhaes <jpm@cs.uu.nl>'**20081002082735] 
[restore Complex's derived Data instance
'Jose Pedro Magalhaes <jpm@cs.uu.nl>'**20081002082655] 
[update Data.Generics import
'Jose Pedro Magalhaes <jpm@cs.uu.nl>'**20081002082604] 
[Don't use ^(2::Int) in Data.Complex.magnitude; partially fixes trac #2450
Ian Lynagh <igloo@earth.li>**20081004142651
 We still might want to make a RULE for this, so the bug is not fully fixed.
] 
[Restore the Haskell 98 behaviour of Show Ratio (#1920)
Simon Marlow <simonmarhaskell@gmail.com>**20080923134949] 
[Pad version number to 4.0.0.0
Ian Lynagh <igloo@earth.li>**20080920155801] 
[TAG 6.10 branch has been forked
Ian Lynagh <igloo@earth.li>**20080919123437] 
Patch bundle hash:
e2e0114e022640e68ea2768054e2d2812260234c