From d1469fd1904b349724c5b5f77a8f6b9a0fc0065d Mon Sep 17 00:00:00 2001
From: Lars Eggert <lars@eggert.org>
Date: Wed, 18 Sep 2024 10:21:53 +0300
Subject: [PATCH] Invert

---
 neqo-crypto/build.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/neqo-crypto/build.rs b/neqo-crypto/build.rs
index 7e34f57320..b61a8e92af 100644
--- a/neqo-crypto/build.rs
+++ b/neqo-crypto/build.rs
@@ -324,7 +324,7 @@ fn setup_standalone(nss: &str) -> Vec<String> {
         .unwrap_or_else(|_| fs::read_to_string(nssdist.join("latest")).unwrap());
 
     // If NSS_PREBUILT is set, we assume that the NSS libraries are already built.
-    if env::var("NSS_PREBUILT").is_ok() {
+    if env::var("NSS_PREBUILT").is_err() {
         build_nss(nss, &nsstarget);
     }