anchor.diff:  
           };
   
  -        lowdown-nix = with final; stdenv.mkDerivation rec {
  +        lowdown-nix = with final; currentStdenv.mkDerivation rec {
             name = "lowdown-0.9.0";
   
             src = lowdown-src;
  
positive.code:           nativeBuildInputs = [ buildPackages.which ];
  
            configurePhase = ''
                ${if (stdenv.isDarwin && stdenv.isAarch64) then "echo \"HAVE_SANDBOX_INIT=false\" > configure.local" else ""}
                ./configure \
                  PREFIX=${placeholder "dev"} \
                  BINDIR=${placeholder "bin"}/bin
              '';
          };
  
        };
  
        hydraJobs = {
  
  
negative.code:               mkdir -p $out/lib
                cp -pd ${boost}/lib/{libboost_context*,libboost_thread*,libboost_system*} $out/lib
                rm -f $out/lib/*.a
                ${lib.optionalString currentStdenv.isLinux ''
                  chmod u+w $out/lib/*.so.*
                  patchelf --set-rpath $out/lib:${currentStdenv.cc.cc.lib}/lib $out/lib/libboost_thread.so.*
                ''}
              '';
  
  