bibutils: enable darwin

[veprbl]

Motivation for this change

Closes: #123542

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Ensured that relevant documentation is up to date
• Fits CONTRIBUTING.md.

[r-rmcgibbo]

Result of nixpkgs-review pr 123581 at b75ce20 run on aarch64-linux 1

1 package built successfully:

• bibutils

1 suggestion:

• warning: unclear-gpl

  gpl2 is a deprecated license, please check if project uses gpl2Plus or gpl2Only and change meta.license accordingly.

  Near pkgs/tools/misc/bibutils/default.nix:38:5:

     |
  38 |     license = licenses.gpl2;
     |     ^
  

---

Result of nixpkgs-review pr 123581 at b75ce20 run on x86_64-linux 1

3 packages built successfully:

• bibutils
• kbibtex
• tests.trivial

1 suggestion:

• warning: unclear-gpl

  gpl2 is a deprecated license, please check if project uses gpl2Plus or gpl2Only and change meta.license accordingly.

  Near pkgs/tools/misc/bibutils/default.nix:38:5:

     |
  38 |     license = licenses.gpl2;
     |     ^