assert versionAtLeast (getVersion pkgs.nixUnstable) "1.11pre4244_133a421";

      nix = nixUnstable;

      aws-sdk-cpp' =
        lib.overrideDerivation (aws-sdk-cpp.override {
          apis = ["s3"];
          customMemoryManagement = false;
        }) (attrs: {
          src = fetchFromGitHub {
            owner = "edolstra";
            repo = "aws-sdk-cpp";
            rev = "d1e2479f79c24e2a1df8a3f3ef3278a1c6383b1e";
            sha256 = "1vhgsxkhpai9a7dk38q4r239l6dsz2jvl8hii24c194lsga3g84h";
          };
        });
      nix = overrideDerivation nixUnstable (attrs: {
        src = fetchFromGitHub {
          owner = "NixOS";
          repo = "nix";
          rev = "b0f7f9c98f2b54e34e9344f817d30363533d108f";
          sha256 = "1xwdlnbsdlsqplzv7s3gaiv1s8mb26qqy17gazl4hy1d3djp0hvl";
        };
        buildInputs = attrs.buildInputs ++ [ autoreconfHook bison flex ];
        nativeBuildInputs = attrs.nativeBuildInputs ++ [ aws-sdk-cpp' autoconf-archive ];
        configureFlags = attrs.configureFlags + " --disable-doc-gen";
        preConfigure = "./bootstrap.sh; mkdir -p $doc $man";
      });

            nix git boehmgc

            nix git boehmgc aws-sdk-cpp'

          (lib.overrideDerivation (aws-sdk-cpp.override {
            apis = ["s3"];
            customMemoryManagement = false;
          }) (attrs: {
            src = fetchFromGitHub {
              owner = "edolstra";
              repo = "aws-sdk-cpp";
              rev = "local";
              sha256 = "1vhgsxkhpai9a7dk38q4r239l6dsz2jvl8hii24c194lsga3g84h";
            };
          }))