Changelog for ghc-pipes-concurrency-2.0.12-3.8.x86_64.rpm :

* Sun Sep 30 2018 psimonsAATTsuse.com- Update pipes-concurrency to version 2.0.12. Upstream does not provide a change log file.
* Tue Jul 10 2018 psimonsAATTsuse.com- Add pipes-concurrency at version 2.0.11.