Exla wrong CPU architecture when doing Mix.install?

Hi,

I’m following the Bumblebee Llama livebook to try the Llama 2 model on my old Intel Macbook

However the Mix.install failed:

13:53:32.406 [warning] The on_load function for module Elixir.EXLA.NIF returned:
{:error,
 {:load_failed,
  ~c"Failed to load NIF library: 'dlopen(/Users/me1/Library/Caches/mix/installs/elixir-1.15.7-erts-14.1.1/2b7a348373d05835d9cd119931789c36/_build/dev/lib/exla/priv/libexla.so, 2): Symbol not found: __ZNKSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEE3strEv\n  Referenced from: /Users/me1/Library/Caches/mix/installs/elixir-1.15.7-erts-14.1.1/2b7a348373d05835d9cd119931789c36/_build/dev/lib/exla/priv/xla_extension/lib/libxla_extension.so (which was built for Mac OS X 13.1)\n  Expected in: /usr/lib/libc++.1.dylib\n'"}}

I investigated a little bit, and found that while doing the Mix.install, it has the following traces:

Unpacking /Users/me1/Library/Caches/xla/0.5.1/cache/download/xla_extension-x86_64-darwin-cpu.tar.gz into /Users/me1/Library/Caches/mix/installs/elixir-1.15.7-erts-14.1.1/e3dd0250dbf080b97b38b403511c7f5b/deps/exla/cache
c++ -fPIC -I/Applications/Livebook.app/Contents/Resources/rel/vendor/otp/erts-14.1.1/include -Icache/xla_extension/include -O3 -Wall -Wno-sign-compare -Wno-unused-parameter -Wno-missing-field-initializers -Wno-comment -shared -std=c++17 -w -DLLVM_VERSION_STRING= c_src/exla/exla.cc c_src/exla/exla_nif_util.cc c_src/exla/exla_client.cc -o cache/libexla.so -Lcache/xla_extension/lib -lxla_extension -flat_namespace -undefined suppress
install_name_tool -change bazel-out/darwin_arm64-opt/bin/xla/extension/libxla_extension.so @loader_path/xla_extension/lib/libxla_extension.so -change bazel-out/darwin-opt/bin/xla/extension/libxla_extension.so @loader_path/xla_extension/lib/libxla_extension.so cache/libexla.so
Caching libexla.so at /Users/me1/Library/Caches/xla/exla/elixir-1.15.7-erts-14.1.1-xla-0.5.1-exla-0.6.0-vowh7yabhpsxubaescx6xex7my/libexla.so

The trace line:

install_name_tool -change bazel-out/darwin_arm64-opt/bin/xla/extension/libxla_extension.so

refers to darwin_arm64-opt which is for ARM CPU, instead of darwin-opt

It is might be the root cause of my Mix.install issue.
Could some one please help me on this? Thanks