_variables.pyi: Add type annotations for _variables.pyx

This enables type checking from mypy on the cython module

2 files changed, 10 insertions, 1 deletions

diff --git a/setup.cfg b/setup.cfg
index e8ba5ac35..971bb970b 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -33,7 +33,7 @@ ignore_missing_imports=True
 
 # Ignore missing stubs for Cythonized modules.
 # In future, these should be re-enabled by writing stubs for them.
-[mypy-buildstream.node,buildstream._loader.*,buildstream._types,buildstream._utils,buildstream._variables]
+[mypy-buildstream.node,buildstream._loader.*,buildstream._types,buildstream._utils]
 ignore_missing_imports=True
 
 # Ignore issues with generated files and vendored code
diff --git a/src/buildstream/_variables.pyi b/src/buildstream/_variables.pyi
new file mode 100644
index 000000000..1e2f47325
--- /dev/null
+++ b/src/buildstream/_variables.pyi
@@ -0,0 +1,9 @@
+from typing import Optional
+
+from .node import MappingNode, Node
+
+class Variables:
+    def __init__(self, node: MappingNode) -> None: ...
+    def check(self) -> None: ...
+    def expand(self, node: Node) -> None: ...
+    def get(self, name: str) -> Optional[str]: ...