Commit cfb4fd54 authored by Tim Schumacher's avatar Tim Schumacher
Browse files

linux/common-config: Overhaul Rust for Linux enabling logic 

The table with kernel version and compiler requirements only starts from
Linux 6.12 now (the previous default), so update the force-enable logic
to accommodate users that don't want to follow those suggestions.

This includes printing warnings instead of asserting and allowing the
force-enable to override both the compiler check and the version (or
architecture) check.
parent 3f646e12

pkgs/os-specific/linux/kernel/common-config.nix

+7 −8
Original line number Diff line number Diff line
@@ -45,7 +45,7 @@ let 
  forceRust = features.rust or false;

  # Architecture support collected from HAVE_RUST Kconfig definitions and the following table:

  # https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/rust/arch-support.rst

  kernelSupportsRust = (

  rustByDefault = (

    lib.versionAtLeast version "6.12"

    && (

      stdenv.hostPlatform.isx86_64
@@ -55,14 +55,13 @@ let 
    )

  );



  # Currently only enabling Rust by default on kernel 6.12+,

  # which actually has features that use Rust that we want.

  defaultRust = lib.versionAtLeast version "6.12" && rustAvailable;

  withRust =

    assert lib.assertMsg (!(forceRust && !kernelSupportsRust)) ''

      Kernel ${version} is not declared as supporting Rust on this host platform and compiler.

    '';

    (forceRust || defaultRust) && kernelSupportsRust;

    lib.warnIfNot (forceRust -> rustAvailable)

      "force-enabling Rust for Linux without an available rustc"

      lib.warnIfNot

      (forceRust -> rustByDefault)

      "force-enabling Rust for Linux on an unsupported kernel version, host platform or compiler"

      (forceRust || (rustAvailable && rustByDefault));



  options = {