diff --git a/infra/libkookie/.gitattributes b/infra/libkookie/.gitattributes
new file mode 100644
index 00000000000..cec7a479705
--- /dev/null
+++ b/infra/libkookie/.gitattributes
@@ -0,0 +1,2 @@
+nixpkgs/* linguist-vendored
+home-manager/* linguist-vendored