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-rw-r--r--pkgs/tools/filesystems/idsk/default.nix4
1 files changed, 2 insertions, 2 deletions
diff --git a/pkgs/tools/filesystems/idsk/default.nix b/pkgs/tools/filesystems/idsk/default.nix
index 34a32c4a6dfe7..5e78a1266873d 100644
--- a/pkgs/tools/filesystems/idsk/default.nix
+++ b/pkgs/tools/filesystems/idsk/default.nix
@@ -14,10 +14,10 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  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)
     "-std=c++14"
-  ];
+  ]);
 
   installPhase = ''
     mkdir -p $out/bin