Rust 1.75 requires setting newer MACOSX_DEPLOYMENT_TARGET
With the release of rust 1.75, we now require setting the minimal
MACOSX_DEPLOYMENT_TARGET to at least 10.12. You can do this by appending
recipe/conda_build_config.yaml with the following content:
c_stdlib_version:       # [osx and x86]
  - '10.12'             # [osx and x86]
and adding {{ stdlib("c") }} as build dependency next to your compiler jinja:
  build:
    - {{ compiler("rust") }}
    - {{ stdlib("c") }}
Note: This entry was update in April 2024 to reflect the new infrastructure for
setting MACOSX_DEPLOYMENT_TARGET, see
here.