diff --git a/common/server/gitea-runner.nix b/common/server/gitea-runner.nix
index f5f4a17..b57b056 100644
--- a/common/server/gitea-runner.nix
+++ b/common/server/gitea-runner.nix
@@ -11,12 +11,6 @@ in
       type = lib.types.str;
       description = lib.mdDoc "gitea runner data directory.";
     };
-    instanceUrl = lib.mkOption {
-      type = lib.types.str;
-    };
-    registrationTokenFile = lib.mkOption {
-      type = lib.types.path;
-    };
   };
 
   config = lib.mkIf cfg.enable {
@@ -35,13 +29,6 @@ in
     };
     users.groups.gitea-runner = { };
 
-    # registration token
-    services.gitea-runner.registrationTokenFile = "/run/agenix/gitea-runner-registration-token";
-    age.secrets.gitea-runner-registration-token = {
-      file = ../../secrets/gitea-runner-registration-token.age;
-      owner = "gitea-runner";
-    };
-
     systemd.services.gitea-runner = {
       description = "Gitea Runner";
 
@@ -57,40 +44,7 @@ in
 
       path = with pkgs; [ gitea-actions-runner ];
 
-      # based on https://gitea.com/gitea/act_runner/src/branch/main/run.sh
       script = ''
-        . ${cfg.registrationTokenFile}
-
-        if [[ ! -s .runner ]]; then
-          try=$((try + 1))
-          success=0
-
-          LOGFILE="$(mktemp)"
-
-          # The point of this loop is to make it simple, when running both act_runner and gitea in docker,
-          # for the act_runner to wait a moment for gitea to become available before erroring out.  Within
-          # the context of a single docker-compose, something similar could be done via healthchecks, but
-          # this is more flexible.
-          while [[ $success -eq 0 ]] && [[ $try -lt ''${10:-10} ]]; do
-            act_runner register \
-              --instance "${cfg.instanceUrl}" \
-              --token    "$GITEA_RUNNER_REGISTRATION_TOKEN" \
-              --name     "${config.networking.hostName}" \
-              --no-interactive > $LOGFILE 2>&1
-
-            cat $LOGFILE
-
-            cat $LOGFILE | grep 'Runner registered successfully' > /dev/null
-            if [[ $? -eq 0 ]]; then
-              echo "SUCCESS"
-              success=1
-            else
-              echo "Waiting to retry ..."
-              sleep 5
-            fi
-          done
-        fi
-
         exec act_runner daemon
       '';
     };
diff --git a/machines/phil/default.nix b/machines/phil/default.nix
index d6a0211..10e299f 100644
--- a/machines/phil/default.nix
+++ b/machines/phil/default.nix
@@ -6,10 +6,5 @@
   ];
 
   networking.hostName = "phil";
-  services.gitea-runner = {
-    enable = true;
-    instanceUrl = "https://git.neet.dev";
-  };
-
-  boot.binfmt.emulatedSystems = [ "x86_64-linux" ];
+  services.gitea-runner.enable = true;
 }
diff --git a/machines/storage/s0/default.nix b/machines/storage/s0/default.nix
index 024768e..845ba03 100644
--- a/machines/storage/s0/default.nix
+++ b/machines/storage/s0/default.nix
@@ -7,7 +7,12 @@
 
   networking.hostName = "s0";
 
-  system.autoUpgrade.enable = true;
+  # system.autoUpgrade.enable = true;
+
+  # gitea runner and allow it to build ARM derivations
+  services.gitea-runner.enable = true;
+  boot.binfmt.emulatedSystems = [ "aarch64-linux" ];
+  nix.gc.automatic = lib.mkForce false; # allow the nix store to serve as a build cache
 
   services.iperf3.enable = true;
   services.iperf3.openFirewall = true;