diff --git a/ghc-rpm-macros.ghc b/ghc-rpm-macros.ghc
index 08a179e..c0c2511 100644
--- a/ghc-rpm-macros.ghc
+++ b/ghc-rpm-macros.ghc
@@ -36,3 +36,6 @@ echo '%{ghcdocdir}' >> %1-doc.files \
 %ghc_reindex_haddock ( cd %{_docdir}/ghc/libraries && [ -x "./gen_contents_index" ] && ./gen_contents_index ) || :
 
 %ghc_version %(ghc --numeric-version)
+
+%GHCRequires() \
+Requires:       ghc-%1-%2 = %(ghc-pkg list --global --simple-output %1|sed -e "s/%1-//")
diff --git a/ghc-rpm-macros.spec b/ghc-rpm-macros.spec
index 25191aa..98915d3 100644
--- a/ghc-rpm-macros.spec
+++ b/ghc-rpm-macros.spec
@@ -1,6 +1,6 @@
 Name:		ghc-rpm-macros
-Version:	0.2.1
-Release:	2%{?dist}
+Version:	0.2.2
+Release:	1%{?dist}
 Summary:	Macros for building packages for GHC
 
 Group:		Development/Libraries
@@ -48,6 +48,9 @@ rm -rf $RPM_BUILD_ROOT
 
 
 %changelog
+* Mon Nov 16 2009 Jens Petersen <petersen@redhat.com> - 0.2.2-1
+- add %%GHCRequires for automatically versioned library deps
+
 * Tue Sep 22 2009 Jens Petersen <petersen@redhat.com> - 0.2.1-2
 - no, revert versioned ghcdocdir again!