komac: migrate to finalAttrs

[HeitorAugustoLN]

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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[kachick]

I can understand the motivation for replacing rec with finalAttrs.
Is it also desirable to change from the current let-in style?

I don't know the details of the background. I just found #293452 and #194475. The issues seem to be under discussion.

[HeitorAugustoLN]

I can understand the motivation for replacing rec with finalAttrs. Is it also desirable to change from the current let-in style?

I don't know the details of the background. I just found #293452 and #194475. The issues seem to be under discussion.

Using rec or let-in means that self-references won’t update if an attribute is overridden, which can lead to mismatches. With finalAttrs (recursive fixed-point), when you override something like version, every reference that uses it (such as in tag or changelog) updates automatically. This keeps everything consistent without needing manual overrides for each attribute.

[kachick]

Thank you for explaining. 🙏