erlang-emmap has broken dependencies in the F-21 tree: On x86_64: erlang-emmap-0-0.8.git05ae1bb.fc21.x86_64 requires erlang(erl_nif_version) = 0:2.4 On i386: erlang-emmap-0-0.8.git05ae1bb.fc21.i686 requires erlang(erl_nif_version) = 0:2.4 On armhfp: erlang-emmap-0-0.8.git05ae1bb.fc21.armv7hl requires erlang(erl_nif_version) = 0:2.4 Please resolve this as soon as possible.