cabal-install and hscolour version confuse Cabal

haskell-platform-build-tools.patch

@@ -0,0 +1,13 @@
+--- haskell-platform-7.10.2-a/packages/haskell-platform-7.10.2/haskell-platform.cabal~	2015-08-06 00:06:13.000000000 +0900
++++ haskell-platform-7.10.2-a/packages/haskell-platform-7.10.2/haskell-platform.cabal	2015-10-02 18:40:24.046614029 +0900
+@@ -110,8 +110,8 @@
+   -- Depending on programs does not work, they are not registered
+   -- We list them to help distro packaging.
+   build-tools:
+-      cabal-install                  ==1.22.6.0,
++--      cabal-install                  ==1.22.6.0,
+       alex                           ==3.1.4,
+       happy                          ==1.19.5,
+-      hscolour                       ==1.23,
++      hscolour                       ==1.20,
+       haddock                        ==2.16.1

haskell-platform.spec

@@ -56,6 +56,7 @@ Group:          Development/Tools
 License:        BSD
 URL:            http://www.haskell.org/platform/
 Source0:        http://www.haskell.org/platform/download/%{version}/%{name}-%{upstream_version}-a.tar.gz
+Patch1:         haskell-platform-build-tools.patch
 
 BuildRequires:  ghc-Cabal-devel
 BuildRequires:  ghc-rpm-macros-extra
@@ -201,6 +202,7 @@ cp LICENSE hptool/Setup.hs packages/%{name}-%{version}
 # HsColour reports 1.20
 #cabal-tweak-dep-ver hscolour '==1.20.3' '==1.20'
 mv %{name}.cabal packages/%{name}-%{version}
+%patch1 -p1 -b .orig
 
 
 %build