5645cd22d4
Closes #376820 The issue with providing `moduleMakeFlags` via `passthru` of the kernel package is that when this package gets overriden[1], the `moduleMakeFlags` list still references the kernel without the overrides. This broke e.g. kernel modules of linux-rpi4 which can be reproduced with nix-build --argstr system aarch64-linux -A linuxKernel.packages.linux_rpi4.zfs_2_3 This used to break with Error: modDirVersion 6.6.51 specified in the Nix expression is wrong, it should be: 6.6.51-v8 since KBUILD_OUTPUT referenced the kernel without the changes from `overrideDerivation` that also changes the `modDirVersion`. The new approach is to add the build flags right into `linuxKernel.packages.linux_X_Y`: that way we don't need any hacks to update `moduleMakeFlags` when the derivation with the passthru gets overridden. By using the fixpoint of the package-set, the `kernelModuleMakeFlags` list is correctly updated. E.g. given with import ./. {}; linuxKernel.packages.linux_6_6.extend (self: super: { kernel = super.kernel.overrideAttrs (_: { name = "linux-snens"; }); }) the `makeFlags` is correctly updated: $ nix-instantiate snenskek.nix -A zfs_2_3.makeFlags --eval --strict [ "ARCH=x86_64" "CROSS_COMPILE=" "KBUILD_OUTPUT=/nix/store/gsp68549k1aqbwxwczpgw67w5jjn4shw-linux-snens-dev/lib/modules/6.6.74/build" ] [1] E.g. `linux-rpi4`.
40 lines
1.1 KiB
Nix
40 lines
1.1 KiB
Nix
{
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lib,
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fetchFromGitHub,
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kernel,
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kernelModuleMakeFlags,
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unstableGitUpdater,
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}:
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kernel.stdenv.mkDerivation {
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pname = "rust-out-of-tree-module";
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version = "0-unstable-2024-05-06";
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src = fetchFromGitHub {
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owner = "Rust-for-linux";
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repo = "rust-out-of-tree-module";
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rev = "9872947486bb8f60b0d11db15d546a3d06156ec5";
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hash = "sha256-TzCySY7uQac98dU+Nu5dC4Usm7oG0iIdZZmZgAOpni4=";
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};
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nativeBuildInputs = kernel.moduleBuildDependencies;
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makeFlags = kernelModuleMakeFlags ++ [
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"KDIR=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
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];
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installFlags = [ "INSTALL_MOD_PATH=${placeholder "out"}" ];
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installTargets = [ "modules_install" ];
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passthru.updateScript = unstableGitUpdater { };
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meta = {
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broken = !kernel.withRust;
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description = "Basic template for an out-of-tree Linux kernel module written in Rust";
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homepage = "https://github.com/Rust-for-Linux/rust-out-of-tree-module";
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license = lib.licenses.gpl2Only;
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maintainers = [ lib.maintainers.blitz ];
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platforms = [ "x86_64-linux" ] ++ lib.optional (kernel.kernelAtLeast "6.9") "aarch64-linux";
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};
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}
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