python-sphinxcontrib-pecanwsme from Cloud:OpenStack:Pike project
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Add repository and install manually
For SLE 12 SP3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Cloud:OpenStack:Pike/SLE_12_SP3/Cloud:OpenStack:Pike.repo zypper refresh zypper install python-sphinxcontrib-pecanwsme