diff --git a/README.md b/README.md
index 9fb1162..cf03ceb 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # ghc-data-default
 
+GHC default data library.
+
diff --git a/ghc-data-default.spec b/ghc-data-default.spec
new file mode 100644
index 0000000..a6e2d5a
--- /dev/null
+++ b/ghc-data-default.spec
@@ -0,0 +1,67 @@
+%define ghc_ver %(ghc --version | sed "s|.*version ||")
+%define pkgname %(echo %name | sed "s|^ghc-||")
+Name:          ghc-data-default
+Version:       0.5.3
+Release:       1mamba
+Summary:       GHC default data library.
+Group:         System/Libraries
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           http://hackage.haskell.org/package/%{pkgname}
+Source:        http://hackage.haskell.org/packages/archive/data-default/%{version}/data-default-%{version}.tar.gz
+License:       BSD
+## AUTOBUILDREQ-BEGIN
+## AUTOBUILDREQ-END
+BuildRequires: ghc
+BuildRequires: ghc-data-default-class
+BuildRequires: ghc-data-default-instances-base
+BuildRequires: ghc-data-default-instances-containers
+BuildRequires: ghc-data-default-instances-dlist
+BuildRequires: ghc-data-default-instances-old-locale
+Requires:      ghc-data-default-class
+Requires:      ghc-data-default-instances-base
+Requires:      ghc-data-default-instances-containers
+Requires:      ghc-data-default-instances-dlist
+Requires:      ghc-data-default-instances-old-locale
+Requires:      ghc = %{ghc_ver}
+BuildRoot:     %{_tmppath}/%{name}-%{version}-root
+
+%description
+GHC default data library.
+
+%prep
+%setup -q -n data-default-%{version}
+
+%build
+runghc Setup.lhs configure \
+--prefix=%{_prefix} --libdir=%{_libdir}
+
+runghc Setup.lhs build
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+runghc Setup.lhs copy --destdir=%{buildroot}
+runghc Setup.lhs register \
+--gen-pkg-config="%{buildroot}%{_libdir}/ghc-%{ghc_ver}/%{pkgname}-%{version}/%{pkgname}-%{version}.conf"
+
+%clean
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+%post
+ghc-pkg register %{_libdir}/ghc-%{ghc_ver}/%{pkgname}-%{version}/%{pkgname}-%{version}.conf &>/dev/null || true
+:
+
+%preun
+ghc-pkg unregister %{_libdir}/ghc-%{ghc_ver}/%{pkgname}-%{version}/%{pkgname}-%{version}.conf &>/dev/null || true
+:
+
+%files
+%defattr(-,root,root)
+%dir %{_libdir}/ghc-%{ghc_ver}/%{pkgname}-%{version}
+%{_libdir}/ghc-%{ghc_ver}/%{pkgname}-%{version}/*
+%{_datadir}/doc/%{pkgname}-%{version}/LICENSE
+
+%changelog
+* Sun Sep 08 2013 Silvan Calarco <silvan.calarco@mambasoft.it> 0.5.3-1mamba
+- package created by silvan using the webbuild interface