python3Packages.vllm: disable on aarch64-darwin (#451116)

      daniel-fahey

    ];

    badPlatforms = [

      # CMake Error at cmake/cpu_extension.cmake:188 (message):

      #   vLLM CPU backend requires AVX512, AVX2, Power9+ ISA, S390X ISA, ARMv8 or

      #   RISC-V support.

      "aarch64-darwin"

      # CMake Error at cmake/cpu_extension.cmake:78 (find_isa):

      # find_isa Function invoked with incorrect arguments for function named:

      # find_isa