1 files changed, 11 insertions, 0 deletions
diff --git a/proc-macro-error/proc-macro-error/build.rs b/proc-macro-error/proc-macro-error/build.rs
new file mode 100644
index 0000000..04ddc11
--- /dev/null
+++ b/proc-macro-error/proc-macro-error/build.rs
@@ -0,0 +1,11 @@
+#[rustversion::nightly]
+fn nightly() {
+    println!("cargo:rustc-cfg=pme_nightly");
+}
+
+#[rustversion::not(nightly)]
+fn nightly() {}
+
+fn main() {
+    nightly()
+}