Split python3 module to a separate package

python-cython.spec

@@ -1,4 +1,5 @@
 %define tarname Cython
+%bcond_without  python3
 
 Summary:	Language for writing C extensions to Python
 Name:		python-cython
@@ -12,14 +13,16 @@ Url:		http://www.cython.org
 BuildRequires:	python-devel
 BuildRequires:	dos2unix
 BuildRequires:  python-distribute
+%if %{with python3}
 BuildRequires:  python3-distribute
+%endif
 
 %description
 Cython is a language that facilitates the writing of C extensions for
 the Python language. It is based on Pyrex, but provides more cutting
 edge functionality and optimizations.
 
-
+%if %{with python3}
 %package -n python3-cython
 Summary:    Language for writing C extensions to Python
 Group:      Development/Python
@@ -30,29 +33,35 @@ BuildRequires:  python3-devel
 Cython is a language that facilitates the writing of C extensions for
 the Python language. It is based on Pyrex, but provides more cutting
 edge functionality and optimizations.
+%endif
 
 %prep
 %setup -q -c
 
 mv %{tarname}-%{version} python2
+%if %{with python3}
 cp -r python2 python3
+%endif
 
 %build 
 pushd python2
 python setup.py build
 popd
+%if %{with python3}
 pushd python3
 %{__python3} setup.py build
 popd
+%endif
 
 %install
-
+%if %{with python3}
 pushd python3
 PYTHONDONTWRITEBYTECODE= %__python3 setup.py install --root %{buildroot}
 mv %{buildroot}/usr/bin/cython %{buildroot}/usr/bin/cython3
 mv %{buildroot}/usr/bin/cygdb %{buildroot}/usr/bin/cygdb3
 mv %{buildroot}/usr/bin/cythonize %{buildroot}/usr/bin/cythonize3
 popd
+%endif
 
 pushd python2
 find -name .*DS_Store* | xargs rm -rf
@@ -77,6 +86,7 @@ popd
 %{py_platsitedir}/cython*
 %{py_platsitedir}/pyximport*
 
+%if %{with python3}
 %files -n python3-cython
 %{_bindir}/cython3
 %{_bindir}/cygdb3
@@ -85,3 +95,4 @@ popd
 %{py3_platsitedir}/Cython*
 %{py3_platsitedir}/cython*
 %{py3_platsitedir}/pyximport*
+%endif