"yum-builddep xchat-2.8.4-15.fc9.src.rpm" fails with error "Error: No Package found for /bin/sed" the BuildRequires line in the spec needs to be just 'sed', then it yanks in all deps as expected
You're using a broken build of yum which chokes on file dependencies (like the one which reported the bogus "broken dependencies" in Rawhide). A BuildRequires on a file is perfectly valid, and the file /bin/sed is contained in the sed package.
yeah, thanks, this was fixed in yum-3.2.16-2.fc9.noarch