https://bugzilla.redhat.com/show_bug.cgi?id=827289
--- Comment #2 from Michel Alexandre Salim michel+fdr@sylvestre.me --- @Kushal - please hold the review until the Packaging Committee vote this Wednesday; the /nix directory use is likely a problem:
https://fedorahosted.org/fpc/ticket/180
Might have to get the package into RPM Fusion instead (are you a contributor there?)