Fix Buildroot OTA upgrade path

buildroot-manage.sh

@@ -622,6 +622,21 @@ PY
     info "Linked image-provided Python runtime into the venv"
 }
 
+remove_shadowing_buildroot_native_packages() {
+    local removed=0
+
+    if "$VENV_PIP" show python-periphery >/dev/null 2>&1; then
+        stage "Restoring Buildroot GPIO runtime"
+        info "Removing venv-installed python-periphery so the image-provided package is used"
+        "$VENV_PIP" uninstall -y python-periphery >/dev/null 2>&1 || true
+        removed=1
+    fi
+
+    if [ "$removed" -eq 0 ]; then
+        info "No shadowing Buildroot native GPIO wheels found in the venv"
+    fi
+}
+
 install_core_into_venv() {
     local core_repo core_ref core_spec
 
@@ -1361,6 +1376,7 @@ install_repeater() {
     install_buildroot_dependencies
     install_core_into_venv
     install_repeater_package
+    remove_shadowing_buildroot_native_packages
     link_system_site_packages
 
     stage "Validating installed runtime"
@@ -1426,6 +1442,7 @@ upgrade_repeater() {
         ensure_yq >/dev/null 2>&1 || true
         install_repeater_package
     fi
+    remove_shadowing_buildroot_native_packages
     link_system_site_packages
     stage "Validating installed runtime"
     if check_venv_runtime; then

repeater/web/update_endpoints.py

@@ -29,6 +29,7 @@ from datetime import datetime
 from typing import List, Optional
 
 import cherrypy
+from repeater.service_utils import is_buildroot
 
 logger = logging.getLogger("HTTPServer")
 
@@ -808,9 +809,18 @@ def _do_install() -> None:
     _state.append_line(f"[pyMC updater] Installing from channel '{channel}'…")
 
     _UPGRADE_WRAPPER = "/usr/local/bin/pymc-do-upgrade"
+    _BUILDROOT_UPGRADE_HELPER = "/root/scripts/buildroot-manage.sh"
     is_root = (_os.geteuid() == 0)
 
-    if is_root:
+    if is_root and is_buildroot():
+        env["PYMC_REPEATER_REF"] = channel
+        env["PYMC_CORE_REF"] = channel
+        _state.append_line(f"[pyMC updater] Buildroot image detected – using {_BUILDROOT_UPGRADE_HELPER}")
+        if not os.path.isfile(_BUILDROOT_UPGRADE_HELPER):
+            _state.finish_install(False, f"Buildroot upgrade helper not found at {_BUILDROOT_UPGRADE_HELPER}")
+            return
+        cmd = ["/bin/sh", _BUILDROOT_UPGRADE_HELPER, "upgrade"]
+    elif is_root:
         _migrate_service_unit()
 
         # Ensure venv exists (migration from system-pip era)