--- /dev/null
+%define ruby_ridir %(ruby -r rbconfig -e 'include Config; print File.join(CONFIG["datadir"], "ri", CONFIG["ruby_version"], "system")')
+%define ruby_rubylibdir %(ruby -r rbconfig -e 'print Config::CONFIG["rubylibdir"]')
+%define ruby_archdir %(ruby -r rbconfig -e 'print Config::CONFIG["archdir"]')
+Summary: Fast Changeset Tool
+Name: fastcst
+Version: 0.5.2
+Release: 1
+License: GPL
+Group: Development/Languages
+Source0: http://www.zedshaw.com/projects/fastcst/%{name}-%{version}.tar.bz2
+# Source0-md5: c5f11c44c7290131b3569bf32a80b89e
+URL: http://www.zedshaw.com/projects/fastcst/
+BuildRequires: ruby
+BuildRequires: ruby-devel
+Requires: ruby
+Requires: ruby-RMail
+Requires: ruby-pluginfactory
+BuildRoot: %{tmpdir}/%{name}-%{version}-root-%(id -u -n)
+
+%description
+A fast suffix-tree based changeset tool.
+
+%prep
+%setup -q -n %{name}-%{version}
+
+%build
+
+rm lib/pluginfactory.rb
+
+ruby setup.rb config \
+ --rbdir=%{ruby_rubylibdir} \
+ --sodir=%{ruby_archdir}
+
+ruby setup.rb setup
+
+rdoc -o rdoc lib --inline-source
+rdoc --ri lib -o ri
+
+%install
+rm -rf $RPM_BUILD_ROOT
+install -d $RPM_BUILD_ROOT{%{ruby_rubylibdir},%{ruby_ridir}}
+
+ruby setup.rb install --prefix=$RPM_BUILD_ROOT
+
+cp -a ri/ri/* $RPM_BUILD_ROOT%{ruby_ridir}
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+%files
+%defattr(644,root,root,755)
+%doc README* rdoc
+%attr(755,root,root) %{_bindir}/fcst
+%attr(755,root,root) %{ruby_archdir}/suffix_array.so
+%{ruby_rubylibdir}/guid.rb
+%{ruby_rubylibdir}/sadelta.rb
+%{ruby_rubylibdir}/fastcst
+%{ruby_ridir}/*