Currect libprelude rawhide branch states the package is dead:

commit 245366323e12d2435620745545225d056a829ebd
Author: Steve <sgrubb>
Date:   Mon Jul 8 10:15:36 2013 -0400

    Upstream has been dead for over a year

But the package has not yet been blocked in rawhide <https://fedorahosted.org/rel-eng/search?q=libprelude> and it's available in RPM repositories:

# LANG=en yum install libprelude
Failed to set locale, defaulting to C
Resolving Dependencies
--> Running transaction check
---> Package libprelude.x86_64 1:1.0.0-17.fc19 will be installed
--> Finished Dependency Resolution
--> Finding unneeded leftover dependencies
Found and removing 0 unneeded dependencies

Dependencies Resolved

================================================================================
 Package           Arch          Version                   Repository      Size
================================================================================
Installing:
 libprelude        x86_64        1:1.0.0-17.fc19           rawhide        769 k

Transaction Summary
================================================================================
Install  1 Package


Please follow the <https://fedoraproject.org/wiki/How_to_remove_a_package_at_end_of_life>.