feat(buildInventory): move instance resolution into buildInventory

Such that buildClan doesn't have to compose the results
buildInventory should be more self contained. But it is NOT meant a
public API! use buildClan argument 'inventory' instead

lib/inventory/build-inventory/builder/interface.nix

@@ -9,6 +9,9 @@ in
     directory = mkOption {
       type = types.path;
     };
+    distributedServices = mkOption {
+      type = types.raw;
+    };
     inventory = mkOption {
       type = types.raw;
     };

lib/inventory/build-inventory/default.nix

@@ -8,7 +8,11 @@ let
     machinesFromInventory :: Inventory -> { ${machine_name} :: NixOSConfiguration }
   */
   buildInventory =
-    { inventory, directory }:
+    {
+      inventory,
+      directory,
+      flakeInputs,
+    }:
     (lib.evalModules {
       specialArgs = {
         inherit clanLib;
@@ -16,6 +20,19 @@ let
       modules = [
         ./builder
         { inherit directory inventory; }
+        (
+          # config.distributedServices.allMachines.${name} or [ ];
+          { config, ... }:
+          {
+            distributedServices = clanLib.inventory.mapInstances {
+              inherit (config) inventory;
+              inherit flakeInputs;
+            };
+            machines = lib.mapAttrs (machineName: v: {
+              machineImports = v;
+            }) config.distributedServices.allMachines;
+          }
+        )
       ];
     }).config;
 in