Run config option validation even in raw mode

platformio/project/config.py

@@ -279,6 +279,9 @@ class ProjectConfigBase(object):
         if value == MISSING:
             return None
 
+        if option_meta.validate:
+            value = option_meta.validate(value)
+
         return self._expand_interpolations(value)
 
     def _expand_interpolations(self, value):
@@ -315,11 +318,8 @@ class ProjectConfigBase(object):
         if not option_meta:
             return value
 
-        if option_meta.validate:
-            value = option_meta.validate(value)
         if option_meta.multiple:
             value = self.parse_multi_values(value or [])
-
         try:
             return self.cast_to(value, option_meta.type)
         except click.BadParameter as e:

platformio/project/options.py

@@ -107,6 +107,9 @@ def expand_dir_templates(path):
 def validate_dir(path):
     if not path:
         return path
+    # if not all values expanded, ignore validation
+    if "${" in path and "}" in path:
+        return path
     if path.startswith("~"):
         path = fs.expanduser(path)
     if "$" in path: