linux: handle case where ZBOOT EFI stub is the target

[jmbaur]

Description of changes

When CONFIG_EFI_ZBOOT is enabled in the linux kernel's config, vmlinuz.efi becomes the file you want to install through the zinstall make target. This also needs the hexdump tool during the build of the EFI image.

Things done

• Built on platform(s)
  • x86_64-linux (cross to aarch64)
  • 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/)
• 24.05 Release Notes (or backporting 23.05 and 23.11 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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[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/3032/3216

[alyssais]

Diff LGTM

[jmbaur]

Sorry for the churn, forgot this was targeting staging and had rebased on master, should be fixed now.

[jmbaur]

@alyssais any chance you'd be able to merge this one? I'm pretty sure amjoseph used to maintain the linux derivations, so there's no maintainer here to merge this anymore.

[JohnRTitor]

Hello, could you rebase this?

[JohnRTitor]

Ok lets merge this one after CI passes green

[Ma27]

@jmbaur

I'm pretty sure amjoseph used to maintain the linux derivations, so there's no maintainer here to merge this anymore.

What makes you think that? There were even people pinged by ofborg because there's a maintainer team for the kernel.

The sole problem - in my case - is that I just didn't have the time so far to take a look.

[jmbaur]

@Ma27 sorry the history looks kinda weird! I accidentally rebased this PR on master, when it was targeted at staging, so it pulled in a few unrelated files which then pulled in the maintainers for those files. IIRC, the only original reviewer that got pulled in was amjoseph.

[fpletz]

I tried building vmlinuz.efi on aarch64. This is actually wrong here since it needs to be put in nativeBuildInputs.