diff --git a/ghc-blaze-builder.spec b/ghc-blaze-builder.spec
index bc8aa40..6fa63de 100644
--- a/ghc-blaze-builder.spec
+++ b/ghc-blaze-builder.spec
@@ -1,16 +1,11 @@
 # https://fedoraproject.org/wiki/Packaging:Haskell
-# https://fedoraproject.org/wiki/PackagingDrafts/Haskell
 
 %global pkg_name blaze-builder
 
-%global common_summary Builder to efficiently append text
-
-%global common_description Builder to efficiently append text, optimized for HTML generation.
-
 Name:           ghc-%{pkg_name}
 Version:        0.3.1.0
-Release:        7%{?dist}
-Summary:        %{common_summary}
+Release:        8%{?dist}
+Summary:        Builder to efficiently append text
 
 License:        BSD
 URL:            http://hackage.haskell.org/package/%{pkg_name}
@@ -24,7 +19,24 @@ BuildRequires:  ghc-text-devel
 # End cabal-rpm deps
 
 %description
-%{common_description}
+This library provides an abstraction of buffered output of byte streams
+and several convenience functions to exploit it. For example, it allows
+to efficiently serialize Haskell values to lazy bytestrings with a large
+average chunk size. The large average chunk size allows to make good use of
+cache prefetching in later processing steps (e.g. compression) and reduces
+the system call overhead when writing the resulting lazy bytestring to
+a file or sending it over the network.
+
+
+%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
@@ -39,19 +51,26 @@ BuildRequires:  ghc-text-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 LICENSE
+%files -f %{name}.files
+%doc LICENSE
+
+
+%files devel -f %{name}-devel.files
 %doc CHANGES README.markdown
 
 
 %changelog
+* Fri Jun 07 2013 Jens Petersen <petersen@redhat.com> - 0.3.1.0-8
+- update to new simplified Haskell Packaging Guidelines
+
 * Wed Feb 13 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.3.1.0-7
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_19_Mass_Rebuild