Unable to build Pants in nix-shell on OS X

[kvudata]

Describe the bug
I'm following the instructions at https://www.pantsbuild.org/2.21/docs/contributions/development/setting-up-pants, and when I run pants after nix-shell it fails with

...
  = note: ld: library not found for -liconv
          clang-11: error: linker command failed with exit code 1 (use -v to see invocation)
          

error: could not compile `ring` (build script) due to 1 previous error
warning: build failed, waiting for other jobs to finish...

Pants version
Checked out main as of caa340570525ac6342800f20008c680c80f02ad0.

OS
MacOS (M1 running Sonoma 14.6.1)

Additional info

[jsirois]

I don't use Pants or macOS or nix-shell and I found this with about 2 minutes search effort: https://discourse.nixos.org/t/nix-shell-rust-hello-world-ld-linkage-issue/17381