treewide: use toString on list NIX_CFLAGS_COMPILE

with structuredAttrs lists will be bash arrays which cannot be exported
which will be a issue with some patches and some wrappers like cc-wrapper

1 files changed, 1 insertions, 1 deletions

diff --git a/pkgs/development/libraries/aws-sdk-cpp/default.nix b/pkgs/development/libraries/aws-sdk-cpp/default.nix
index 5fb65ffa181..c72347a2b7d 100644
--- a/pkgs/development/libraries/aws-sdk-cpp/default.nix
+++ b/pkgs/development/libraries/aws-sdk-cpp/default.nix
@@ -105,7 +105,7 @@ stdenv.mkDerivation rec {
   ] ++ lib.optional (apis != ["*"])
     "-DBUILD_ONLY=${lib.concatStringsSep ";" apis}";
 
-  NIX_CFLAGS_COMPILE = [
+  NIX_CFLAGS_COMPILE = toString [
     # openssl 3 generates several deprecation warnings
     "-Wno-error=deprecated-declarations"
   ];