hydra: add laptop public key

system/hosts/server/home.nix

@@ -156,6 +156,7 @@ in {
       supportedFeatures = [ "kvm" "nixos-test" "benchmark" "big-parallel" ];
       sshKey = "/secrets/hydra-builder-key";
       sshUser = "hydra-builder";
+      publicHostKey = cfg.laptopPublicKey;
     }
   ];
   # limit CI CPU usage since I'm running everything else off this server too

system/hosts/server/options.nix

@@ -14,6 +14,11 @@
           default = null;
           description = "laptop hostname";
         };
+        laptopPublicKey = mkOption {
+          type = with types; nullOr str;
+          default = null;
+          description = "laptop public ssh key";
+        };
         keycloakRealm = mkOption {
           type = types.str;
           default = "master";