Your package ghdl failed to build from source in current F28. https://koji.fedoraproject.org/koji/taskinfo?taskID=24793463 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
https://koji.fedoraproject.org/koji/buildinfo?buildID=1059966
ghdl-0.35dev-0.20180315git0edf0a1.0.fc28 has been submitted as an update to Fedora 28. https://bodhi.fedoraproject.org/updates/FEDORA-2018-4d0e1f6c78
ghdl-0.35dev-0.20180315git0edf0a1.0.fc28 has been pushed to the Fedora 28 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2018-4d0e1f6c78
ghdl-0.35dev-0.20180315git0edf0a1.0.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report.