linux_xanmod, linux_xanmod_latest: add update script

[eljamm]

To test, run:

nix-shell maintainers/scripts/update.nix --argstr package linux_xanmod

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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[eljamm]

I've noticed that passthru.updateScript doesn't propagate to linux_xanmod and linux_xanmod_latest, but this is the case for all kernels, not just Xanmod (which needs to be added to manual-config.nix and I already had some success doing so).

So to test this, one would just need to run:

• ./update-xanmod.sh <VARIANT> from the same directory as the file, or
• pkgs/os-specific/linux/kernel/update-xanmod.sh <VARIANT>

[zzzsyyy]

Seems that the filename is sometimes <variant>/<version>-xanmod**2**？(it's relatively rare)

[eljamm]

Seems that the filename is sometimes <variant>/<version>-xanmod**2**？(it's relatively rare)

Interesting, I didn't know that. Nice catch!

[eljamm]

New changes:

• Small refactors
• Add some comments to clarify what this does
• Properly handle and update the suffix

[nixos-discourse]

This pull request has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/prs-ready-for-review/3032/5430

[eljamm]

Since #412568 has been merged, this can now be tested with:

nix-shell maintainers/scripts/update.nix --argstr package linux_xanmod

[eljamm]

I've been using this since April without any issues, so I think this is good to merge, but any suggestions are welcome.

[nixpkgs-ci]

Successfully created backport PR for release-25.05:

• [Backport release-25.05] linux_xanmod, linux_xanmod_latest: add update script #429339

[eljamm]

Thanks!