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-rw-r--r--pkgs/development/libraries/liboping/default.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/development/libraries/liboping/default.nix b/pkgs/development/libraries/liboping/default.nix
index 9a44e84b136..118f283a0f9 100644
--- a/pkgs/development/libraries/liboping/default.nix
+++ b/pkgs/development/libraries/liboping/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
     })
   ];
 
-  NIX_CFLAGS_COMPILE = lib.optionalString
+  env.NIX_CFLAGS_COMPILE = lib.optionalString
     stdenv.cc.isGNU "-Wno-error=format-truncation";
 
   buildInputs = [ ncurses perl ];