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-rw-r--r--pkgs/applications/science/logic/cbmc/default.nix4
1 files changed, 2 insertions, 2 deletions
diff --git a/pkgs/applications/science/logic/cbmc/default.nix b/pkgs/applications/science/logic/cbmc/default.nix
index d61a9893942..ddfa999fcc7 100644
--- a/pkgs/applications/science/logic/cbmc/default.nix
+++ b/pkgs/applications/science/logic/cbmc/default.nix
@@ -60,13 +60,13 @@ stdenv.mkDerivation rec {
       --prefix PATH : "$out/share/cbmc" \
   '';
 
-  NIX_CFLAGS_COMPILE = lib.optionals stdenv.cc.isGNU [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.cc.isGNU [
     # Needed with GCC 12 but breaks on darwin (with clang)
     "-Wno-error=maybe-uninitialized"
   ] ++ lib.optionals stdenv.cc.isClang [
     # fix "argument unused during compilation"
     "-Wno-unused-command-line-argument"
-  ];
+  ]);
 
   # TODO: add jbmc support
   cmakeFlags = [ "-DWITH_JBMC=OFF" "-Dsat_impl=cadical" "-Dcadical_INCLUDE_DIR=${cadical.dev}/include" ];