nixos/lubelogger: init

[bct]

Adds a module for LubeLogger, and adds myself as maintainer.

Closes #333954

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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[bct]

This is mostly #335653 , with a few modifications:

• fixes "cannot coerce integer to a string"
• adds an environmentFile option, for setting sensitive environment variables
• updates the /var/lib/lubelogger/wwwroot symlinks when the nix package is updated
• hardens the systemd configuration

[Lyndeno]

I'll have a look at this later, I am happy to also be added to the maintainers field for the module.

[bct]

👍 Only changed the maintainer because I wasn't sure you were still up for it.

Unfortunately I pulled at a thread and discovered that this module is not working correctly. Configuration changes get lost when the service is restarted - it's loading userConfig from the ContentRoot in the /nix/store, not from /var/lib/lubelogger.

I've put up a PR for this issue here: hargata/lubelog#781