Kubecolor oc alias and zsh completions

[jennydaman]

Description

• Add a kubecolor alias for oc. See https://github.com/kubecolor/kubecolor/blob/main/README.md#whats-this
• Add an option enableZshIntegration which fixes ZSH completions for kubectl (and oc). See https://kubecolor.github.io/setup/shells/zsh/#completions

Checklist

• Change is backwards compatible.

• Code formatted with ./format.

• Code tested through nix-shell --pure tests -A run.all
  or nix build --reference-lock-file flake.lock ./tests#test-all using Flakes.

• Test cases updated/added. See example.

• Commit messages are formatted like

  {component}: {description}
  
  {long description}
  

  See CONTRIBUTING for more information and recent commit messages for examples.

• If this PR adds a new module

  • Added myself as module maintainer. See example.

Maintainer CC

@ajgon

[ajgon]

I think your commits got broken somehow, and you've lost the oc alias part :-).

[jennydaman]

Whoops, you're right. I made a mistake rewriting history to run ./format.

[jennydaman]

@ajgon ptal?

[ajgon]

Suggested change

	oc = "env KUBECTL_COMMAND=${lib.getExe pkgs.openshift} ${
	lib.getExe cfg.package
	}";
	oc = lib.mkIf (lib.elem pkgs.openshift config.home-manager.users.ajgon.home.packages || lib.elem pkgs.openshift config.environment.systemPackages) "env KUBECTL_COMMAND=${lib.getExe pkgs.openshift} ${
	lib.getExe cfg.package
	}";

I would add this alias only if user has openshift installed.

[jennydaman]

@ajgon I added some tests for the conditional addition of the oc alias.

This is my first PR to nix-community. I'm not sure what the best way to test this would be. Is it bad to have pkgs.openshift in the test here, instead of config.lib.test.mkStubPackage?

[ajgon]

I think mkStubPackage will work better here, as it won't build whole derivation for openshift, just for testing. You can overload pkgs with overlay i.e.

  nixpkgs.overlays = [
    (self: super: rec {
      openshift = config.lib.test.mkStubPackage {
        name = "openshift";
        version = "4.16.0";
    };
  ];

and keep the rest of your test as is. This should use stub instead of a real package, thus avoiding building deriv. 'm not at my laptop right now, so can't guarantee if it works, but in general that's the idea you should follow :-).