matrix-continuwuity: adjust rocksdb build with upstream

          };

          patches = [ ];

          cmakeFlags =

            lib.subtractLists [

              # no real reason to have snappy or zlib, no one uses this

              (lib.cmakeBool "WITH_SNAPPY" true)

              (lib.cmakeBool "ZLIB" true)

              (lib.cmakeBool "WITH_ZLIB" true)

              # we dont need to use ldb or sst_dump (core_tools)

              (lib.cmakeBool "WITH_CORE_TOOLS" true)

              # we dont need to build rocksdb tests

              (lib.cmakeBool "WITH_TESTS" true)

              # we use rust-rocksdb via C interface and dont need C++ RTTI

              (lib.cmakeBool "USE_RTTI" true)

              # this doesn't exist in RocksDB

              (lib.cmakeBool "FORCE_SSE43" true)

            ] old.cmakeFlags

            ++ [

              # no real reason to have snappy, no one uses this

              (lib.cmakeBool "WITH_SNAPPY" false)

              (lib.cmakeBool "ZLIB" false)

              (lib.cmakeBool "WITH_ZLIB" false)

              # we dont need to use ldb or sst_dump (core_tools)

              (lib.cmakeBool "WITH_CORE_TOOLS" false)

              # we dont need to build rocksdb tests

              (lib.cmakeBool "WITH_TESTS" false)

              # we use rust-rocksdb via C interface and dont need C++ RTTI

              (lib.cmakeBool "USE_RTTI" false)

              (lib.cmakeBool "WITH_TRACE_TOOLS" false)

            ];

          outputs = [ "out" ];

          # We aren't building tools, the original package uses this to make sure rocksdb

          # tools work as expected. Hence we override this and make it empty.

          preInstall = "";

        }

      );

in