Set single_config_entry in System monitor manifest (#134838)

homeassistant/components/systemmonitor/config_flow.py

@@ -8,8 +8,6 @@ from typing import Any
 import voluptuous as vol
 
 from homeassistant.components.binary_sensor import DOMAIN as BINARY_SENSOR_DOMAIN
-from homeassistant.config_entries import ConfigFlowResult
-from homeassistant.core import callback
 from homeassistant.helpers import entity_registry as er
 from homeassistant.helpers.schema_config_entry_flow import (
     SchemaCommonFlowHandler,
@@ -100,12 +98,3 @@ class SystemMonitorConfigFlowHandler(SchemaConfigFlowHandler, domain=DOMAIN):
     def async_config_entry_title(self, options: Mapping[str, Any]) -> str:
         """Return config entry title."""
         return "System Monitor"
-
-    @callback
-    def async_create_entry(
-        self, data: Mapping[str, Any], **kwargs: Any
-    ) -> ConfigFlowResult:
-        """Finish config flow and create a config entry."""
-        if self._async_current_entries():
-            return self.async_abort(reason="already_configured")
-        return super().async_create_entry(data, **kwargs)

homeassistant/components/systemmonitor/manifest.json

@@ -6,5 +6,6 @@
   "documentation": "https://www.home-assistant.io/integrations/systemmonitor",
   "iot_class": "local_push",
   "loggers": ["psutil"],
-  "requirements": ["psutil-home-assistant==0.0.1", "psutil==6.1.1"]
+  "requirements": ["psutil-home-assistant==0.0.1", "psutil==6.1.1"],
+  "single_config_entry": true
 }

homeassistant/components/systemmonitor/strings.json

@@ -1,7 +1,7 @@
 {
   "config": {
     "abort": {
-      "already_configured": "[%key:common::config_flow::abort::already_configured_service%]"
+      "single_instance_allowed": "[%key:common::config_flow::abort::already_configured_service%]"
     },
     "step": {
       "user": {

homeassistant/generated/integrations.json

@@ -6183,7 +6183,8 @@
       "name": "System Monitor",
       "integration_type": "hub",
       "config_flow": true,
-      "iot_class": "local_push"
+      "iot_class": "local_push",
+      "single_config_entry": true
     },
     "tado": {
       "name": "Tado",

tests/components/systemmonitor/test_config_flow.py

@@ -48,17 +48,9 @@ async def test_form_already_configured(
     result = await hass.config_entries.flow.async_init(
         DOMAIN, context={"source": config_entries.SOURCE_USER}
     )
-    assert result["step_id"] == "user"
-    assert result["type"] is FlowResultType.FORM
-
-    result = await hass.config_entries.flow.async_configure(
-        result["flow_id"],
-        {},
-    )
-    await hass.async_block_till_done()
 
     assert result["type"] is FlowResultType.ABORT
-    assert result["reason"] == "already_configured"
+    assert result["reason"] == "single_instance_allowed"
 
 
 async def test_add_and_remove_processes(