nix-daemon: Fix compat with older clients
nix-daemon: Fix compat with older clients

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