ocamlPackages.pyml: fix test on darwin

[Et7f3]

Description of changes

Caught while reviewing #162385

Things done

While building I saw:

building
       clang pyml_arch.ml.sharp
clang-11: warning: argument unused during compilation: '-fno-strict-overflow' [-Wunused-command-line-argument]
       clang numpy_stubs.o
clang-11: warning: argument unused during compilation: '-fno-strict-overflow' [-Wunused-command-line-argument]
       clang pyml_stubs.o
clang-11: warning: argument unused during compilation: '-fno-strict-overflow' [-Wunused-command-line-argument]

it seem that clang doesn't handle this argument where should I change it ? in cc-wrapper ?

I also added IPython because some test where skipped.

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandbox = true set in nix.conf? (See Nix manual)
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 23.05 Release Notes (or backporting 22.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
  • (Release notes changes) Ran nixos/doc/manual/md-to-db.sh to update generated release notes
• Fits CONTRIBUTING.md.