1 files changed, 11 insertions, 0 deletions
diff --git a/third_party/rust/proc-macro-error/build.rs b/third_party/rust/proc-macro-error/build.rs
new file mode 100644
index 0000000000..3c1196f269
--- /dev/null
+++ b/third_party/rust/proc-macro-error/build.rs
@@ -0,0 +1,11 @@
+fn main() {
+    if !version_check::is_feature_flaggable().unwrap_or(false) {
+        println!("cargo:rustc-cfg=use_fallback");
+    }
+
+    if version_check::is_max_version("1.38.0").unwrap_or(false)
+        || !version_check::Channel::read().unwrap().is_stable()
+    {
+        println!("cargo:rustc-cfg=skip_ui_tests");
+    }
+}