nixos/radarr,lidarr,readarr,whisparr,prowlarr: add settings option

[Stunkymonkey]

follow-up: #373576

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• 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/)
• 25.05 Release Notes (or backporting 24.11 and 25.05 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
• Fits CONTRIBUTING.md.

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[ambroisie]

No apiKeyFile?

[Stunkymonkey]

@ambroisie we could. Not sure, because it looked quiet complex to me for inserting just a string.

Should I add it?

[ambroisie]

I think I'd care mainly if there was a way to set the various client API keys declaratively in Prowlarr, but that's not really doable from what I understand (except maybe if I hacked it in with some custom SQLite invocations...).

As it is, it feels like a small inconsistency with Sonarr's module.

[kevincox]

I have no particular knowledge of these services and it seems like there are many other interested reviewers. If you need someone to merge once everything is reviewed and touched up feel free to give me a ping, but until then I will step out.

[pta2002]

With this servarr directory, I feel it makes more sense to move the module files into it so they're all together.

As an added bonus, I'd suggest you could do a fairly simple nixos test which sets the API key and tries to hit the API with curl. I did something very similar in the autobrr PR I did a few days ago.

[pta2002]

I think I'd care mainly if there was a way to set the various client API keys declaratively in Prowlarr, but that's not really doable from what I understand (except maybe if I hacked it in with some custom SQLite invocations...).

It is if we script the API! I have a WIP implemention of that in my private config, I can push it tomorrow if you're interested. Something like configarr or recyclarr might work here too.

All in all it's about a 40-line python script though, and most of it is just niceties. It's really not complex.

However I'd say we really shouldn't block this PR on that. I can make a PR later with that if I can get it working well enough.

[undefined-landmark]

Great work! Any reason not to turn the environmentFiles option into a function and reuse it across the different modules?

[Stunkymonkey]

Great work! Any reason not to turn the environmentFiles option into a function and reuse it across the different modules?

surely we could. please have a look

[pta2002]

Looks good to me, if you can confirm it works!

I would still suggest the test though, I think it would be a fairly simple thing that would add some confidence to any future changes in these modules.