diff --git a/ghc-MemoTrie.spec b/ghc-MemoTrie.spec
index a90aa2e..9e0e38e 100644
--- a/ghc-MemoTrie.spec
+++ b/ghc-MemoTrie.spec
@@ -1,18 +1,11 @@
 # https://fedoraproject.org/wiki/Packaging:Haskell
-# https://fedoraproject.org/wiki/PackagingDrafts/Haskell
 
 %global pkg_name MemoTrie
 
-%global common_summary Trie-based memo functions
-
-%global common_description MemoTrie provides a basis for memoized functions over some domains using tries.\
-It's based on ideas from Ralf Hinze and code from Spencer Janssen.\
-Project wiki page: <http://haskell.org/haskellwiki/MemoTrie>
-
 Name:           ghc-%{pkg_name}
 Version:        0.6.1
-Release:        1%{?dist}
-Summary:        %{common_summary}
+Release:        2%{?dist}
+Summary:        Trie-based memo functions
 
 License:        BSD
 URL:            http://hackage.haskell.org/package/%{pkg_name}
@@ -25,7 +18,20 @@ BuildRequires:  ghc-void-devel
 # End cabal-rpm deps
 
 %description
-%{common_description}
+MemoTrie provides a basis for memoized functions over some domains using tries.
+It is based on ideas from Ralf Hinze and code from Spencer Janssen.
+Project wiki page: <http://haskell.org/haskellwiki/MemoTrie>
+
+
+%package devel
+Summary:        Haskell %{pkg_name} library development files
+Requires:       ghc-compiler = %{ghc_version}
+Requires(post): ghc-compiler = %{ghc_version}
+Requires(postun): ghc-compiler = %{ghc_version}
+Requires:       %{name} = %{version}-%{release}
+
+%description devel
+This package provides the Haskell %{pkg_name} library development files.
 
 
 %prep
@@ -40,18 +46,25 @@ BuildRequires:  ghc-void-devel
 %ghc_lib_install
 
 
-%ghc_devel_package
-
-%ghc_devel_description
+%post devel
+%ghc_pkg_recache
 
 
-%ghc_devel_post_postun
+%postun devel
+%ghc_pkg_recache
 
 
-%ghc_files COPYING
+%files -f %{name}.files
+%doc COPYING
+
+
+%files devel -f %{name}-devel.files
 
 
 %changelog
+* Fri Jun 07 2013 Jens Petersen <petersen@redhat.com> - 0.6.1-2
+- update to new simplified Haskell Packaging Guidelines
+
 * Tue Mar 12 2013 Jens Petersen <petersen@redhat.com> - 0.6.1-1
 - update to 0.6.1