python-OWSLib was available for epel7 but it seems to be missing from epel8. I don't know if it's helpful but I tried to build the f32 version (python-OWSLib-0.20.0-1.fc32.src.rpm) under epel8 and it builds.
If anybody is willing to maintain it, please feel free to request the necessary branch! I don't have the time and willingness to do it.
New Fedora maintainer here. I will do the EPEL8 backport, with the caveat that pytest is too old to run the test suite.
Branch requested: https://pagure.io/releng/fedora-scm-requests/issue/40062
FEDORA-EPEL-2021-91088c15ce has been submitted as an update to Fedora EPEL 8. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2021-91088c15ce
FEDORA-EPEL-2021-91088c15ce has been pushed to the Fedora EPEL 8 testing repository. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2021-91088c15ce See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-EPEL-2021-91088c15ce has been pushed to the Fedora EPEL 8 stable repository. If problem still persists, please make note of it in this bug report.