Log platform import errors and correct reqs for config check (#25425)

* Log failures to load plaforms

* Drop unused exception variable

* Also load pip requirements with check config

* Fix lint

* More lint

* Drop invalid parameters for error call

homeassistant/config.py

@@ -706,11 +706,14 @@ async def async_process_component_config(
         if (not hass.config.skip_pip and p_integration.requirements and
                 not await async_process_requirements(
                     hass, p_integration.domain, p_integration.requirements)):
+            _LOGGER.error(
+                "Unable to install all requirements for %s.%s", domain, p_name)
             continue
 
         try:
             platform = p_integration.get_platform(domain)
         except ImportError:
+            _LOGGER.exception("Failed to get platform %s.%s", domain, p_name)
             continue
 
         # Validate platform specific schema

homeassistant/helpers/check_config.py

@@ -159,6 +159,15 @@ async def async_check_ha_config_file(hass: HomeAssistant) -> \
                     "platform.".format(p_name, domain))
                 continue
 
+            if (not hass.config.skip_pip and p_integration.requirements and
+                    not await requirements.async_process_requirements(
+                        hass, p_integration.domain,
+                        p_integration.requirements)):
+                result.add_error(
+                    "Unable to install all requirements: {}".format(
+                        ', '.join(integration.requirements)))
+                continue
+
             try:
                 platform = p_integration.get_platform(domain)
             except ImportError: