diff --git a/ghc-utf8-string.spec b/ghc-utf8-string.spec
index 9984e5c..814b036 100644
--- a/ghc-utf8-string.spec
+++ b/ghc-utf8-string.spec
@@ -1,18 +1,11 @@
 # https://fedoraproject.org/wiki/Packaging:Haskell
-# https://fedoraproject.org/wiki/PackagingDrafts/Haskell
 
 %global pkg_name utf8-string
 
-%global common_summary Support for reading and writing UTF8 Strings
-
-%global common_description A UTF8 layer for IO and Strings. The utf8-string package provides operations\
-for encoding UTF8 strings to Word8 lists and back, and for reading and writing\
-UTF8 without truncation. 
-
 Name:           ghc-%{pkg_name}
 Version:        0.3.7
-Release:        6%{?dist}
-Summary:        %{common_summary}
+Release:        7%{?dist}
+Summary:        Support for reading and writing UTF8 Strings
 
 License:        BSD
 URL:            http://hackage.haskell.org/package/%{pkg_name}
@@ -26,7 +19,20 @@ BuildRequires:  ghc-bytestring-devel
 # End cabal-rpm deps
 
 %description
-%{common_description}
+A UTF8 layer for IO and Strings. The utf8-string package provides operations
+for encoding UTF8 strings to Word8 lists and back, and for reading and writing
+UTF8 without truncation.
+
+
+%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 utf8-string library development files.
 
 
 %prep
@@ -42,18 +48,25 @@ BuildRequires:  ghc-bytestring-devel
 %ghc_lib_install
 
 
-%ghc_devel_package
+%post devel
+%ghc_pkg_recache
+
 
-%ghc_devel_description
+%postun devel
+%ghc_pkg_recache
 
 
-%ghc_devel_post_postun
+%files -f %{name}.files
+%doc LICENSE
 
 
-%ghc_files LICENSE
+%files devel -f %{name}-devel.files
 
 
 %changelog
+* Mon Jun  3 2013 Jens Petersen <petersen@redhat.com> - 0.3.7-7
+- update to new simplified Haskell Packaging Guidelines
+
 * Wed Feb 13 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.3.7-6
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_19_Mass_Rebuild