prayer: remove

[tu-maurice]

Description of changes

This PR removes anything related to the prayer package. For this I present the following reasons:

• The package has not been touched in almost 4 years.
• It failed to build in the past 2 years, which means no active users.
• The sources are not available anymore, so we're only relying on hydras cache for this.
• Fixing the build doesn't get the derivation into a clean nor usable state. See prayer: use html-tidy 5.6 #266129

I think this package is beyond a point where marking it as broken is reasonable, because "Such unconditionally-broken packages should be removed from Nixpkgs eventually unless they are fixed." (quote Nixpkgs manual) and the package is beyond fixing.

I should probably add some error message somewhere, explaining that the packages is gone, but I have no idea how or where. Any thoughts?

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/)
• 23.11 Release Notes (or backporting 23.05 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.

[ambroisie]

The place to add a message about removed packages is in aliases.nix, you should find plenty of examples in the file.

[tu-maurice]

Neat. Is there a similar spot for the module? Or do I just remove that?

[ambroisie]

NixOS modules have rename.nix I believe (can't check as I'm on mobile).

[tu-maurice]

Ah. Yeah there's one with plenty examples. Thank you, @ambroisie :)

[pbsds]

I think removal of service modules should go in the release notes.

[pbsds]

just a small nit

[AndersonTorres]

A prayer for the removal of prayer.