Make --repair work on Darwin
Make --repair work on Darwin

Mac OS X doesn't allow renaming a read-only directory.

http://hydra.nixos.org/build/9113895

dtzWill/nix,rycee/nix,pikajude/nix,bennofs/nix,NixOS/nix,zimbatm/nix,vcunat/nix,pikajude/nix,gebner/nix,ysangkok/nix,NixOS/nix,ttuegel/nix,NixOS/nix,NixOS/nix,bennofs/nix,joelmo/nix,bjornfor/nix,layus/nix,nbp/nix,tchajed/nix,gridaphobe/nix,nbp/nix,layus/nix,gridaphobe/nix,tchajed/nix,peti/nix,garbas/nix,gebner/nix,vcunat/nix,wmertens/nix,dtzWill/nix,ttuegel/nix,dezgeg/nix,zimbatm/nix,gebner/nix,garbas/nix,joelmo/nix,vizanto/nix,layus/nix,garbas/nix,nbp/nix,ehmry/nix,jcumming/nix,garbas/nix,pikajude/nix,offlinehacker/nix,bennofs/nix,shlevy/nix,joelmo/nix,puffnfresh/nix,puffnfresh/nix,aucampia/nix,acowley/nix,bjornfor/nix,tchajed/nix,rycee/nix,vizanto/nix,ysangkok/nix,aucampia/nix,vizanto/nix,wmertens/nix,dezgeg/nix,wmertens/nix,vcunat/nix,rowhit/nix,rowhit/nix,puffnfresh/nix,NixOS/nix,dezgeg/nix,puffnfresh/nix,wmertens/nix,shlevy/nix,jcumming/nix,jcumming/nix,dtzWill/nix,vizanto/nix,bennofs/nix,dezgeg/nix,dtzWill/nix,rycee/nix,zimbatm/nix,peti/nix,dtzWill/nix,nbp/nix,ysangkok/nix,acowley/nix,jcumming/nix,rowhit/nix,tchajed/nix,gridaphobe/nix,dezgeg/nix,shlevy/nix,zimbatm/nix,ehmry/nix,gridaphobe/nix,garbas/nix,shlevy/nix,ehmry/nix,bjornfor/nix,rycee/nix,ttuegel/nix,aucampia/nix,ttuegel/nix,peti/nix,shlevy/nix,peti/nix,peti/nix,gebner/nix,offlinehacker/nix,vcunat/nix,rycee/nix,offlinehacker/nix,bjornfor/nix,ehmry/nix,aucampia/nix,acowley/nix,acowley/nix,layus/nix,offlinehacker/nix,joelmo/nix,layus/nix,rowhit/nix,ehmry/nix,ehmry/nix