Merge branch 'staging-next'

Status on Hydra for linuxes seems good enough:
https://hydra.nixos.org/eval/1585703?filter=linux&compare=1585482&full=#tabs-now-fail

nixos/modules/virtualisation/ecs-agent.nix

@@ -38,9 +38,8 @@ in {
         if [ ! -z "$ECS_DATADIR" ]; then
           mkdir -p "$ECS_DATADIR"
         fi
-        ${cfg.package.bin}/bin/agent
+        ${cfg.package}/bin/agent
       '';
     };
   };
 }
-

nixos/modules/virtualisation/lxd.nix

@@ -108,7 +108,7 @@ in
       '';
 
       serviceConfig = {
-        ExecStart = "@${cfg.package.bin}/bin/lxd lxd --group lxd";
+        ExecStart = "@${cfg.package}/bin/lxd lxd --group lxd";
         Type = "simple";
         KillMode = "process"; # when stopping, leave the containers alone
         LimitMEMLOCK = "infinity";