migrate to experimental snow.flake schema

snow.nix

@@ -1,22 +1,20 @@
-{cerulean, ...} @ inputs:
-cerulean.mkNexus ./. (self: {
-  nexus = {
-    args = {inherit inputs;};
-
-    modules = with inputs; [];
-
+{
+  inputs,
+  cerulean,
+  ...
+} @ args: {
+  nodes = {
     base = inputs.nixpkgs;
+    homeManager = inputs.home-manager;
+
+    args = {inherit inputs;};
+    modules = with inputs; [];
 
     groups = {
       servers = {};
     };
 
-    nodes = let
-      inherit
-        (self.nexus)
-        groups
-        ;
-    in {
+    nodes = {
       nixarawrui = {
         system = "x86_64-linux";
 
@@ -30,7 +28,7 @@ cerulean.mkNexus ./. (self: {
       arcturus = {
         system = "x86_64-linux";
 
-        groups = [
+        groups = groups: [
           groups.servers
         ];
 
@@ -110,7 +108,7 @@ cerulean.mkNexus ./. (self: {
       lyra = {
         system = "x86_64-linux";
 
-        groups = [
+        groups = groups: [
           groups.servers
         ];
 
@@ -122,4 +120,4 @@ cerulean.mkNexus ./. (self: {
       };
     };
   };
-})
+}