I'm trying to uninstall havana on rhel6 packstack bombs trying to install nova, I've tried to install it by hand here: [root@control-n ~]# yum install python-nova Loaded plugins: product-id, security, subscription-manager This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package python-nova.noarch 0:2013.2-0.19.b3.el6 will be installed --> Processing Dependency: python-pyasn1 for package: python-nova-2013.2-0.19.b3.el6.noarch --> Processing Dependency: python-neutronclient for package: python-nova-2013.2-0.19.b3.el6.noarch --> Processing Dependency: python-jinja2 for package: python-nova-2013.2-0.19.b3.el6.noarch --> Processing Dependency: python-boto for package: python-nova-2013.2-0.19.b3.el6.noarch --> Running transaction check ---> Package python-boto.noarch 0:2.9.9-2.el6 will be installed ---> Package python-neutronclient.noarch 0:2.3.0-1.el6 will be installed --> Processing Dependency: python-cliff >= 1.0 for package: python-neutronclient-2.3.0-1.el6.noarch --> Processing Dependency: pyparsing for package: python-neutronclient-2.3.0-1.el6.noarch ---> Package python-nova.noarch 0:2013.2-0.19.b3.el6 will be installed --> Processing Dependency: python-jinja2 for package: python-nova-2013.2-0.19.b3.el6.noarch ---> Package python-pyasn1.noarch 0:0.0.12a-1.el6 will be installed --> Running transaction check ---> Package pyparsing.noarch 0:1.5.6-1.el6 will be installed ---> Package python-cliff.noarch 0:1.4.4-1.el6 will be installed --> Processing Dependency: python-cmd2 for package: python-cliff-1.4.4-1.el6.noarch ---> Package python-nova.noarch 0:2013.2-0.19.b3.el6 will be installed --> Processing Dependency: python-jinja2 for package: python-nova-2013.2-0.19.b3.el6.noarch --> Running transaction check ---> Package python-cmd2.noarch 0:0.6.4-7.el6 will be installed ---> Package python-nova.noarch 0:2013.2-0.19.b3.el6 will be installed --> Processing Dependency: python-jinja2 for package: python-nova-2013.2-0.19.b3.el6.noarch --> Finished Dependency Resolution Error: Package: python-nova-2013.2-0.19.b3.el6.noarch (openstack-havana) Requires: python-jinja2 You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest epel has a python-jinja2-26 http://dl.fedoraproject.org/pub/epel/6/x86_64/repoview/python-jinja2-26.html but not a python-jinja2 rhel didn't have jinja2 that I could see. is there a different place to get this from?