Don't remove location information for packages (#1133)

esphome/components/packages/__init__.py

@@ -1,51 +1,44 @@
-from deepmerge import conservative_merger as package_merger
-
 import esphome.config_validation as cv
 
 from esphome.const import CONF_PACKAGES
 
-VALID_PACKAGE_NAME_CHARS = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_'
 
+def _merge_package(full_old, full_new):
 
-def _merge_package(config, package_name, package_config):
-    config = config.copy()
-    package_merger.merge(config, package_config)
-    return config
+    def merge(old, new):
+        # pylint: disable=no-else-return
+        if isinstance(new, dict):
+            if not isinstance(old, dict):
+                return new
+            res = old.copy()
+            for k, v in new.items():
+                res[k] = merge(old[k], v) if k in old else v
+            return res
+        elif isinstance(new, list):
+            if not isinstance(old, list):
+                return new
+            return old + new
 
+        return new
 
-def _is_valid_package_name(value: str) -> bool:
-    if not value:
-        return False
-    if value[0].isdigit():
-        return False
-    try:
-        cv.valid_name(value)
-    except cv.Invalid:
-        return False
-    return True
+    return merge(full_old, full_new)
 
 
 def do_packages_pass(config: dict):
     if CONF_PACKAGES not in config:
-        return
+        return config
     packages = config[CONF_PACKAGES]
-    temp_config = config.copy()
     with cv.prepend_path(CONF_PACKAGES):
-        if packages is not None and not isinstance(packages, dict):
+        if not isinstance(packages, dict):
             raise cv.Invalid("Packages must be a key to value mapping, got {} instead"
                              "".format(type(packages)))
+
         for package_name, package_config in packages.items():
             with cv.prepend_path(package_name):
-                if not isinstance(package_config, dict):
-                    raise cv.Invalid("Package definition must be a dictionary containing valid "
-                                     "esphome configuration to be merged with the main "
-                                     "config, got {} instead"
-                                     .format(type(package_config)))
-                if not _is_valid_package_name(package_name):
-                    raise cv.Invalid("Package name is invalid. Valid name should consist of "
-                                     "letters, numbers and underscores. It shouldn't also "
-                                     "start with number")
-                temp_config = _merge_package(temp_config, package_name, package_config)
-        del temp_config[CONF_PACKAGES]
-        config.clear()
-        config.update(temp_config)
+                recursive_package = package_config
+                if isinstance(package_config, dict):
+                    recursive_package = do_packages_pass(package_config)
+                config = _merge_package(config, recursive_package)
+
+        del config[CONF_PACKAGES]
+    return config