anchor.diff:      preConfigure       = lib.optionalString (lib.versionAtLeast version "3.5") "patchShebangs utils";
   
       postPatch = ''
  -      sed -ie 's!/bin/echo!echo!' 3rdParty/V8/v*/gypfiles/*.gypi
  +      ${if lib.versionAtLeast version "3.9"
  +        then "sed -ie 's!/bin/echo!echo!' 3rdParty/V8/gypfiles/*.gypi"
  +        else "sed -ie 's!/bin/echo!echo!' 3rdParty/V8/v*/gypfiles/*.gypi"}
   
         # with nixpkgs, it has no sense to check for a version update
         substituteInPlace js/client/client.js --replace "require('@arangodb').checkAvailableVersions();" ""
  
positive.code:     '';
  
      cmakeFlags = [
        # do not set GCC's -march=xxx based on builder's /proc/cpuinfo
        "-DUSE_OPTIMIZE_FOR_ARCHITECTURE=OFF"
        # also avoid using builder's /proc/cpuinfo
        "-DHAVE_SSE42=${if stdenv.hostPlatform.sse4_2Support then "ON" else "OFF"}"
        "-DASM_OPTIMIZATIONS=${if stdenv.hostPlatform.sse4_2Support then "ON" else "OFF"}"
      ];
  
      meta = with lib; {
        homepage = "https://www.arangodb.com";
        description = "A native multi-model database with flexible data models for documents, graphs, and key-values";
        license = licenses.asl20;
        platforms = platforms.linux;
        maintainers = [ maintainers.flosse ];
      };
    };
  in {
    arangodb_3_3 = common {
      version = "3.3.24";
      sha256 = "18175789j4y586qvpcsaqxmw7d6vc3s29qm1fja5c7wzimx6ilyp";
    };
    arangodb_3_4 = common {
      version = "3.4.8";
      sha256 = "0vm94lf1i1vvs04vy68bkkv9q43rsaf1y3kfs6s3jcrs3ay0h0jn";
    };
    arangodb_3_5 = common {
      version = "3.5.1";
      sha256 = "1jw3j7vaq3xgkxiqg0bafn4b2169jq7f3y0l7mrpnrpijn77rkrv";
    };
  }
  
negative.code:       inherit sha256;
      };
  
      nativeBuildInputs = [
        cmake
        perl
        (if lib.versionAtLeast version "3.9" then python3 else python2)
        which
      ];
  
      buildInputs = [ openssl zlib snappy lzo ];
  
      # prevent failing with "cmake-3.13.4/nix-support/setup-hook: line 10: ./3rdParty/rocksdb/RocksDBConfig.cmake.in: No such file or directory"
  