Changelog for ghc-haskell-gi-base-0.21.4-lp150.1.2.x86_64.rpm :

* Mon Oct 15 2018 psimonsAATTsuse.com- Update haskell-gi-base to version 0.21.4. [#]## 0.21.4 + Add support for callback-valued properties.
* Mon Oct 01 2018 psimonsAATTsuse.com- Update haskell-gi-base to version 0.21.3. Upstream has edited the change log file since the last release in a non-trivial way, i.e. they did more than just add a new entry at the top. You can review the file at: http://hackage.haskell.org/package/haskell-gi-base-0.21.3/src/ChangeLog.md
* Tue Jul 10 2018 psimonsAATTsuse.com- Add haskell-gi-base at version 0.21.1.