I spent some time today trying to package up julia. It's pretty messy and this is no where near complete (it still downloads packages and fails to build due to https://github.com/JuliaLang/julia/issues/933), but thought I'd put it out there in case anyone else wants to play with it.
http://www.cora.nwra.com/~orion/fedora/julia-0-0.1.giteecafbe656863a6a8ad496... http://www.cora.nwra.com/~orion/fedora/julia.spec