diff --git a/configs/airootfs/usr/share/omarchy-iso/orchestrator/phases_impl.py b/configs/airootfs/usr/share/omarchy-iso/orchestrator/phases_impl.py
index 6276812..63900d2 100644
--- a/configs/airootfs/usr/share/omarchy-iso/orchestrator/phases_impl.py
+++ b/configs/airootfs/usr/share/omarchy-iso/orchestrator/phases_impl.py
@@ -746,6 +746,9 @@ def _runtime_package_list(ctx: InstallContext) -> list[str]:
             continue
         if s not in already_installed and s not in pkgs:
             pkgs.append(s)
+    # Local builds live only in this ISO's mirror; a later region switch could not fetch them.
+    if PINNED_PACKAGES.exists():
+        pkgs += [p for p in PINNED_PACKAGES.read_text().split() if p not in already_installed and p not in pkgs]
     return pkgs
 
 
diff --git a/test/unit/test_pin_local_packages.py b/test/unit/test_pin_local_packages.py
index 4bb6d1f..62b10eb 100644
--- a/test/unit/test_pin_local_packages.py
+++ b/test/unit/test_pin_local_packages.py
@@ -83,5 +83,36 @@ class PinLocalPackagesTest(unittest.TestCase):
             self.assertFalse((root / "etc/pacman.d").exists())
 
 
+class RuntimePackagesTest(unittest.TestCase):
+    def runtime_packages(self, pinned: str | None) -> list[str]:
+        with tempfile.TemporaryDirectory() as tmp:
+            root = Path(tmp)
+            pinned_file = root / "pinned-packages"
+            if pinned is not None:
+                pinned_file.write_text(pinned)
+            base = root / "omarchy-base.packages"
+            base.write_text("# base\nfcitx5\ngit\n")
+            real_path = phases_impl.Path
+
+            def path(arg, *rest):
+                if arg == "/usr/share/omarchy-iso/omarchy-base.packages":
+                    return base
+                return real_path(arg, *rest)
+
+            with mock.patch.object(phases_impl, "PINNED_PACKAGES", pinned_file), \
+                 mock.patch.object(phases_impl, "Path", side_effect=path), \
+                 mock.patch.object(phases_impl, "_early_packages", return_value=["git"]), \
+                 mock.patch.object(phases_impl, "_package_targets", return_value={
+                     "runtime": "omarchy-dev", "settings": "omarchy-settings-dev", "nvim": "omarchy-nvim"}):
+                return phases_impl._runtime_package_list(types.SimpleNamespace())
+
+    def test_local_builds_install_on_every_region(self):
+        packages = self.runtime_packages("omarchy-dev\nomarchy-settings-dev\nrime-ice-installer\n")
+        self.assertEqual(packages, ["omarchy-dev", "fcitx5", "rime-ice-installer"])
+
+    def test_published_builds_add_nothing(self):
+        self.assertEqual(self.runtime_packages(None), ["omarchy-dev", "fcitx5"])
+
+
 if __name__ == "__main__":
     unittest.main()