aws-crt-cpp: add nix as reverse dependency to passthru.tests

pkgs/development/libraries/aws-crt-cpp/default.nix

@@ -12,6 +12,7 @@
 , aws-checksums
 , cmake
 , s2n-tls
+, nix
 }:
 
 stdenv.mkDerivation rec {
@@ -65,6 +66,10 @@ stdenv.mkDerivation rec {
     moveToOutput lib/aws-crt-cpp/cmake "$dev"
   '';
 
+  passthru.tests = {
+    inherit nix;
+  };
+
   meta = with lib; {
     description = "C++ wrapper around the aws-c-* libraries";
     homepage = "https://github.com/awslabs/aws-crt-cpp";