message: fix hash option
diff: @@ -8,12 +8,8 @@ set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Mo
  option(BuildVelocyPackExamples "Build examples" ON)
  option(Maintainer "Build maintainer tools" OFF)
  option(Coverage "Build with coverage" OFF)
  -option(HashType "Hash type (fasthash, xxhash)" OFF)
  -#Default to xxhash
  -if(HashType STREQUAL "OFF")
  - set(HashType "xxhash")
  -endif()
  +set(HashType "xxhash" CACHE STRING "Hash type (fasthash, xxhash)" )
  # Set Build Type
  if(NOT CMAKE_BUILD_TYPE)
  