Adding mtime=0 to arandr to improve deterministic build

[TessyJames28]

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.

---

Add a 👍 reaction to pull requests you find important.

[gepbird]

Hi @TessyJames28, I see this fixed the reproducibility issue related to #383869, thanks for your work!

What's the reason for closing this?

[TessyJames28]

I noticed it was failing one of the check because of formatting issue. I have to address the issue. I have made another pull request

[gepbird]

You can rebase with git and force push to an existing PR, but creating a new one is fine too.

Also note that a big formatting PR was recently merged, if you still have issues with it try pulling the latest master branch and create a new branch from there (or rebase your existing branch on top of it).