1 files changed, 7 insertions, 5 deletions
diff --git a/nixpkgs/pkgs/applications/misc/getxbook/default.nix b/nixpkgs/pkgs/applications/misc/getxbook/default.nix
index a69f8d7f0574..15b7c37244fd 100644
--- a/nixpkgs/pkgs/applications/misc/getxbook/default.nix
+++ b/nixpkgs/pkgs/applications/misc/getxbook/default.nix
@@ -9,11 +9,13 @@ stdenv.mkDerivation rec {
     sha256 = "0ihwrx4gspj8l7fc8vxch6dpjrw1lvv9z3c19f0wxnmnxhv1cjvs";
   };
 
-  NIX_CFLAGS_COMPILE = builtins.toString [
-    "-Wno-error=format-truncation"
-    "-Wno-error=deprecated-declarations"
-    "-Wno-error=stringop-overflow"
-  ];
+  NIX_CFLAGS_COMPILE = builtins.toString (
+    [ "-Wno-error=deprecated-declarations" ]
+      ++ lib.optionals (!stdenv.cc.isClang) [
+        "-Wno-error=format-truncation"
+        "-Wno-error=stringop-overflow"
+      ]
+  );
 
   buildInputs = [ openssl ];