module: default hyperhiveFlake to self — operator no longer sets it

README.md

@@ -63,10 +63,7 @@ Minimal `flake.nix` for a host that runs hive-c0re:
       modules = [
         hyperhive.nixosModules.hive-c0re
         ({ ... }: {
-          services.hive-c0re = {
-            enable = true;
-            hyperhiveFlake = "${hyperhive}";
-          };
+          services.hive-c0re.enable = true;
           # ... rest of your host config (hardware, networking, users, …)
           system.stateVersion = "25.11";
         })

flake.nix

@@ -89,6 +89,7 @@
         # builds (already applied internally in `nixosConfigurations`).
         hive-c0re = import ./nix/modules/hive-c0re.nix {
           hyperhivePackage = system: self.packages.${system}.default;
+          hyperhiveFlake = "${self}";
         };
       };
 

nix/modules/hive-c0re.nix

@@ -1,4 +1,7 @@
-{ hyperhivePackage }:
+{
+  hyperhivePackage,
+  hyperhiveFlake,
+}:
 {
   pkgs,
   lib,
@@ -19,12 +22,14 @@ in
     };
     hyperhiveFlake = lib.mkOption {
       type = lib.types.str;
-      default = "/etc/hyperhive";
+      default = hyperhiveFlake;
+      defaultText = lib.literalMD "the flake's own store path";
       description = ''
         URL of the hyperhive flake (no fragment). Inlined into each
         per-agent `flake.nix` at `inputs.hyperhive.url`. The per-agent
         flake then pulls `hyperhive.nixosConfigurations.agent-base` to
-        build the container.
+        build the container. Defaults to this flake's own store path —
+        only override if you want agents tracking a different ref.
       '';
     };
     dashboardPort = lib.mkOption {