TVM fails to compile Metal lib on MacOS due to version?

trying to run a metal relay model with the MacOS metal runtime. it builds the model just fine but when I go to run it I get errors. i can run the exact same model with the llvm cpu runtime without issue.

to create the model i do:

mod, params = relay.frontend.from_tflite(tflite_model, shape_dict=shape_dict, dtype_dict=dtype_dict)
targetm = "metal" #"metal-macos-metal2.1"
with transform.PassContext(opt_level=3):
    libm = relay.build(mod, targetm, params=params)
module_gpu = runtime.GraphModule(libm["default"](tvm.metal()))

module_gpu.set_input(0, dummy_data)
module_gpu.set_input(1, dummy_state)

module_gpu.run()

at which point i get this error.

  File "/Users/marko/code/tvm/src/runtime/metal/metal_module.mm", line 100
  File "/Users/marko/code/tvm/src/runtime/library_module.cc", line 78
TVMError: ---------------------------------------------------------------
An internal invariant was violated during the execution of TVM.
Please read TVM's error reporting guidelines.
More details can be found here: https://discuss.tvm.ai/t/error-reporting/7793.
---------------------------------------------------------------

  Check failed: ret == 0: TVMError: Fail to compile metal lib:Compilation failed:
error: invalid value 'macos-metal2.3' in '-std=macos-metal2.3'
note: use 'ios-metal1.0' for 'Metal 1.0 (iOS)' standard
note: use 'ios-metal1.1' for 'Metal 1.1 (iOS)' standard
note: use 'ios-metal1.2' for 'Metal 1.2 (iOS)' standard
note: use 'ios-metal2.0' for 'Metal 2.0 (iOS)' standard
note: use 'ios-metal2.1' for 'Metal 2.1 (iOS)' standard
note: use 'ios-metal2.2' for 'Metal 2.2 (iOS)' standard
note: use 'osx-metal1.0' for 'Metal 1.0 (OSX)' standard
note: use 'macos-metal1.1' or 'osx-metal1.1' for 'Metal 1.1 (macOS)' standard
note: use 'macos-metal1.2' or 'osx-metal1.2' for 'Metal 1.2 (macOS)' standard
note: use 'macos-metal2.0' or 'osx-metal2.0' for 'Metal 2.0 (macOS)' standard
note: use 'macos-metal2.1' for 'Metal 2.1 (macOS)' standard
note: use 'macos-metal2.2' for 'Metal 2.2 (macOS)' standard

i’m currently running MacOS 10.15.7 and it seems I may be running metal 2.1 but my question is how do i go about specifying the Metal version? do i have to recompile? and if so what file should i point the CMakeLists.txt or tvm_config to?