diff --git a/mesonbuild/ast/introspection.py b/mesonbuild/ast/introspection.py
index 0861748052a8..030ca8b18b45 100644
--- a/mesonbuild/ast/introspection.py
+++ b/mesonbuild/ast/introspection.py
@@ -125,7 +125,7 @@ def func_project(self, node: BaseNode, args: T.List[TYPE_nvar], kwargs: T.Dict[s
                         self.do_subproject(i)
 
         self.coredata.init_backend_options(self.backend)
-        options = {k: v for k, v in self.environment.options.items() if k.name.startswith('backend_')}
+        options = {k: v for k, v in self.environment.options.items() if k.is_backend()}
 
         self.coredata.set_options(options)
         self._add_languages(proj_langs, MachineChoice.HOST)
diff --git a/mesonbuild/coredata.py b/mesonbuild/coredata.py
index 263d2fec5383..eae986dae3a7 100644
--- a/mesonbuild/coredata.py
+++ b/mesonbuild/coredata.py
@@ -89,7 +89,7 @@ class OptionKey:
     internally easier to reason about and produce.
     """
 
-    __slots__ = ['name', 'subproject', 'machine', 'lang', '_hash', '_type']
+    __slots__ = ['name', 'subproject', 'machine', 'lang', '_hash', 'type']
 
     name: str
     subproject: str
diff --git a/mesonbuild/interpreter.py b/mesonbuild/interpreter.py
index a266e1f70382..e6936e4ec6ab 100644
--- a/mesonbuild/interpreter.py
+++ b/mesonbuild/interpreter.py
@@ -3142,7 +3142,7 @@ def set_backend(self):
         if self.environment.first_invocation:
             self.coredata.init_backend_options(backend)
 
-        options = {k: v for k, v in self.environment.options.items() if k.name.startswith('backend_')}
+        options = {k: v for k, v in self.environment.options.items() if k.is_backend()}
         self.coredata.set_options(options)
 
     @stringArgs