diff --git a/nix/nixos/cardano-node-service.nix b/nix/nixos/cardano-node-service.nix
index 23d7a6cff71..15e679e6d20 100644
--- a/nix/nixos/cardano-node-service.nix
+++ b/nix/nixos/cardano-node-service.nix
@@ -10,7 +10,7 @@ let
   svcLib = (import ../svclib.nix { inherit pkgs; cardano-node = pkgs.cardano-node; });
   envConfig = cfg.environments.${cfg.environment}; systemdServiceName = "cardano-node${optionalString cfg.instanced "@"}";
   mkScript = cfg:
-    let exec = "cardano-node";
+    let exec = "cardano-node run";
         cmd = builtins.filter (x: x != "") [
           "${cfg.package}/bin/${exec}"
           "--genesis-file ${cfg.genesisFile}"
@@ -184,7 +184,7 @@ in {
       topology = mkOption {
         type = types.path;
         default = localLib.mkEdgeTopology {
-          inherit (cfg) nodeId port;
+          inherit (cfg) port;
           inherit (envConfig) edgeNodes;
         };
         description = ''
diff --git a/nix/scripts.nix b/nix/scripts.nix
index 333ea39427e..e84b12b394f 100644
--- a/nix/scripts.nix
+++ b/nix/scripts.nix
@@ -44,7 +44,7 @@ let
       edgeHost = if config.useProxy then config.proxyHost else config.edgeHost;
       edgeNodes = if config.useProxy then [] else config.edgeNodes;
     in config.topologyFile or commonLib.mkEdgeTopology {
-      inherit (config) hostAddr port nodeId;
+      inherit (config) hostAddr port;
       inherit edgeNodes edgeHost edgePort;
     };
     serviceConfig = {
diff --git a/nix/sources.json b/nix/sources.json
index c7dfe74c365..dceb721dce8 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -48,15 +48,15 @@
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "iohk-nix": {
-        "branch": "master",
+        "branch": "jordan/update-mkEdgeTopology",
         "description": "nix scripts shared across projects",
         "homepage": null,
         "owner": "input-output-hk",
         "repo": "iohk-nix",
-        "rev": "e4a53fa76c111393481d5739f0d7d10782f3cfcb",
-        "sha256": "1h5jd10pb8a7n18m5f123imw7nzikpawp3vbqsmhysmfazj61gpb",
+        "rev": "60ba229a02e941ca8aa00782d576bfb38d26100c",
+        "sha256": "0lchcbk144cmrd0fzmixzf7c0bw4dsv3sx45qva82wa7lria9g1j",
         "type": "tarball",
-        "url": "https://github.com/input-output-hk/iohk-nix/archive/e4a53fa76c111393481d5739f0d7d10782f3cfcb.tar.gz",
+        "url": "https://github.com/input-output-hk/iohk-nix/archive/60ba229a02e941ca8aa00782d576bfb38d26100c.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "niv": {
diff --git a/nix/svclib.nix b/nix/svclib.nix
index 46d67222c26..acd2e02e68c 100644
--- a/nix/svclib.nix
+++ b/nix/svclib.nix
@@ -25,10 +25,8 @@ let
       addr = host-addr;
       ports = map (x: port-base + x) (range 0 (node-count - 1));
       mkPeer = port: { inherit addr port valency; };
-      mkNodeTopo = nodeId: port: {
-        inherit nodeId;
-        nodeAddress = { inherit addr port; };
-        producers = map mkPeer (remove port ports);
+      mkNodeTopo = port : {
+        Producers =  map mkPeer (remove port ports);
       };
     in toFile "topology.json" (toJSON (imap0 mkNodeTopo ports));
 
@@ -67,13 +65,10 @@ let
       ## we choose not to spread ports for this topology
       shelley-ids = range                      node-id-base (node-id-base + node-count - 1);
       mkPeer = id: { inherit valency; port = port-base + id; addr = addr-fn id; };
-      mkShelleyNode = id: {
-        nodeId = id;
-        nodeAddress = { port = port-base + id; addr = addr-fn id; };
-        producers = map (mkPeer) (remove id shelley-ids) ++
-                    [ { inherit valency; port = proxy-port; addr = proxy-addr; } ];
+      mkShelleyNode = {
+        Producers = map (mkPeer) (remove id shelley-ids);
       };
-      topology = map mkShelleyNode shelley-ids;
+      topology = mkShelleyNode;
     in toFile "topology.yaml" (toJSON topology);
 
   # Note how some values are literal strings, and some integral.