anchor.diff:  
   let
     malloc = if jemalloc != null then jemalloc else gperftools;
  +  tools = [ "sst_dump" "ldb" "rocksdb_dump" "rocksdb_undump" "blob_dump" ];
   in
   stdenv.mkDerivation rec {
     name = "rocksdb-${version}";
     version = "5.10.3";
   
  -  outputs = [ "dev" "out" "static" ];
  +  outputs = [ "dev" "out" "static" "bin" ];
   
     src = fetchFromGitHub {
       owner = "facebook";
  
positive.code: { stdenv
  , fetchFromGitHub
  , fixDarwinDylibNames
  , which, perl
  
negative.code:   buildFlags = buildAndInstallFlags ++ [
      "shared_lib"
      "static_lib"
    ] ++ tools ;
  
    installFlags = buildAndInstallFlags ++ [
      "INSTALL_PATH=\${out}"
  