Fix lima vz support by forcing Apple SDK 15 usage

[josvazg]

Help wanted: This does not work, but maybe the fix is easy?

Related to #346006

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/)
• 24.11 Release Notes (or backporting 23.11 and 24.05 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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[emilazy]

You want buildInputs , not nativeBuildInputs.

If the SDK version QEMU is built with matters, it should be changed in the QEMU package rather than overridden here.

[josvazg]

You want buildInputs , not nativeBuildInputs.

If the SDK version QEMU is built with matters, it should be changed in the QEMU package rather than overridden here.

Thanks for the help and guidance? a few questions:

• Why not nativeBuildInputs? I guess apple-sdk does not apply to non darwin platforms.

• If qemu default build is stuck at apple_sdk 11 they might have a reason, right? Which means an override will fix this package that needs the newer SDK and to use vz rather than only have the option of qemu as a VM. On the other hand, if they are stuck with 11 it might mean that qemu nix package might not work without further effort on a newer SDK.

This can get into a deep rabbit hole.

[emilazy]

• Why not nativeBuildInputs? I guess apple-sdk does not apply to non darwin platforms.

nativeBuildInputs are for tools that run during the build. We want to override SDK for the host platform.

• If qemu default build is stuck at apple_sdk 11 they might have a reason, right? Which means an override will fix this package that needs the newer SDK and to use vz rather than only have the option of qemu as a VM. On the other hand, if they are stuck with 11 it might mean that qemu nix package might not work without further effort on a newer SDK.

It’s actually using 12.3, and the reason is just that we had no newer SDKs available until recently. Though I wasn’t aware that QEMU could make use of any features that aren’t available on the 12.3 SDK? But I could be wrong.

[booxter]

FYI I bumped lima version and realized I need to also bump SDK to continue running ubuntu images with default templates, so something like this PR is also included in #355729

[josvazg]

Thanks @booxter !

Closing as a (partial) duplicate of #355729