cd-hit: fix darwin build

[stephank]

Motivation for this change

ZHF: #122042
cc @NixOS/nixos-release-managers

Hydra failure: https://hydra.nixos.org/build/142598941/log

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 123026 at 4055fa2 run on aarch64-linux 1

1 package built successfully:

• cd-hit

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/applications/science/biology/cd-hit/default.nix:34:5:

     |
  34 |     license = licenses.gpl2;
     |     ^
  

---

Result of nixpkgs-review pr 123026 at 4055fa2 run on x86_64-linux 1

1 package built successfully:

• cd-hit

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/applications/science/biology/cd-hit/default.nix:34:5:

     |
  34 |     license = licenses.gpl2;
     |     ^
  

[veprbl]

Upstream PR weizhongli/cdhit#114

[veprbl]

Result of nixpkgs-review pr 123026 run on x86_64-darwin 1

1 package built:

• cd-hit