Somehow I already have both versions installed. However, trying to update or reinstall one or both of them gives an error about conflicting files: Running transaction test Error: Transaction check error: file /usr/share/man/man5/cert8.db.5.gz conflicts between attempted installs of nss-3.19.2-1.0.fc22.i686 and nss-3.19.2-1.0.fc22.x86_64 file /usr/share/man/man5/cert9.db.5.gz conflicts between attempted installs of nss-3.19.2-1.0.fc22.i686 and nss-3.19.2-1.0.fc22.x86_64 file /usr/share/man/man5/key3.db.5.gz conflicts between attempted installs of nss-3.19.2-1.0.fc22.i686 and nss-3.19.2-1.0.fc22.x86_64 file /usr/share/man/man5/key4.db.5.gz conflicts between attempted installs of nss-3.19.2-1.0.fc22.i686 and nss-3.19.2-1.0.fc22.x86_64 file /usr/share/man/man5/pkcs11.txt.5.gz conflicts between attempted installs of nss-3.19.2-1.0.fc22.i686 and nss-3.19.2-1.0.fc22.x86_64 file /usr/share/man/man5/secmod.db.5.gz conflicts between attempted installs of nss-3.19.2-1.0.fc22.i686 and nss-3.19.2-1.0.fc22.x86_64 See also Bug 1160708 for the PPC version of this.
Fedora 22 changed to end-of-life (EOL) status on 2016-07-19. Fedora 22 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.