Require python-zope-interface4 forward-compat package on el6.

python-zope-exceptions.spec

@@ -7,7 +7,7 @@
 Summary:    Zope Exceptions
 Name:       python-zope-exceptions
 Version:    4.0.3
-Release:    1%{?dist}
+Release:    2%{?dist}
 Source0:    http://pypi.python.org/packages/source/z/%{modname}/%{modname}-%{version}.zip
 License:    ZPLv2.1
 Group:      Development/Libraries
@@ -16,7 +16,14 @@ URL:        http://pypi.python.org/pypi/zope.exceptions
 
 BuildRequires:  python2-devel
 BuildRequires:  python-setuptools
+
+%if 0%{?rhel} && 0%{?rhel} <= 6
+BuildRequires:  python-zope-interface4
+Requires:       python-zope-interface4
+%else
 BuildRequires:  python-zope-interface
+Requires:       python-zope-interface
+%endif
 
 %if 0%{?with_python3}
 BuildRequires:  python3-devel
@@ -24,8 +31,6 @@ BuildRequires:  python3-setuptools
 BuildRequires:  python3-zope-interface
 %endif
 
-Requires:       python-zope-interface
-
 %description
 This package contains exception interfaces and implementations which are so
 general purpose that they don't belong in Zope application-specific packages.
@@ -101,6 +106,9 @@ popd
 
 
 %changelog
+* Tue Jan 01 2013 Ralph Bean <rbean@redhat.com> - 4.0.3-2
+- Require python-zope-interface4 compat package on el6.
+
 * Tue Dec 11 2012 Ralph Bean <rbean@redhat.com> - 4.0.3-1
 - Latest upstream.
 - Packaged a python3 subpackage.