nix-store --serve: Don't loop forever
nix-store --serve: Don't loop forever

nix-store --export takes a tmproot, which can only release by exiting.
Substituters don't currently work in a way that could take advantage of
the looping, anyway.

Signed-off-by: Shea Levy <2ad57049e5a4c55c398e1a2fc9bf3e78fb5d7c3a@shealevy.com>

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