I’ve never build my own kernel.
I need to get command output from a patched kernel.
That’s why trying to build a recent kernel and apply the patch all using nix.
Do you have an idea what I should be doing instead?
The build fails with:
> checking kernel source version... 6.15.0
> configure: error:
> *** Cannot build against kernel version 6.15.0.
> *** The maximum supported kernel version is 6.14.
>
When I change 15 with 14 I get another error:
error: builder for '/nix/store/ihz5iy08n12n4adj80fn88jyiq0j60aq-linux-config-6.14.0.drv' failed with exit code 255;
last 25 log lines:
> GOT: y
> QUESTION: Microsoft Hyper-V driver testing, NAME: HYPERV_TESTING, ALTS: N/y/?, ANSWER:
> GOT:
> GOT: *
> GOT: * Rust hacking
> GOT: *
> QUESTION: Debug assertions, NAME: RUST_DEBUG_ASSERTIONS, ALTS: N/y/?, ANSWER:
> GOT:
> QUESTION: Overflow checks, NAME: RUST_OVERFLOW_CHECKS, ALTS: Y/n/?, ANSWER:
> GOT:
> QUESTION: Allow unoptimized build-time assertions, NAME: RUST_BUILD_ASSERT_ALLOW, ALTS: N/y/?, ANSWER:
> GOT:
> GOT: #
> GOT: # configuration written to .config
> GOT: #
> GOT: make[1]: Leaving directory '/build/source/build'
> GOT: make: Leaving directory '/build/source'
> warning: unused option: CRC32_SELFTEST
> warning: unused option: CRYPTO_TEST
> warning: unused option: POWER_RESET_GPIO
> warning: unused option: POWER_RESET_GPIO_RESTART
> warning: unused option: REISERFS_FS_POSIX_ACL
> warning: unused option: REISERFS_FS_SECURITY
> warning: unused option: REISERFS_FS_XATTR
> error: unused option: SCHED_DEBUG
For full logs, run:
nix log /nix/store/ihz5iy08n12n4adj80fn88jyiq0j60aq-linux-config-6.14.0.drv
error: 1 dependencies of derivation '/nix/store/6pldwfq8xihkihz2wixaryvflci736yi-linux-6.14.0.drv' failed to build
error: 1 dependencies of derivation '/nix/store/1jflnm0khqsk9rzy2mfmpdl10545qmcy-nixos-minimal-25.11.20250619.08f2208-x86_64-linux.iso.drv' failed to build
## nix build .#isopatchedkernel
packages.x86_64-linux.isopatchedkernel = inputs.nixos-generators.nixosGenerate {
system = "x86_64-linux";
format = "install-iso";
specialArgs = {
inherit inputs;
};
modules = [
"${inputs.nixpkgs}/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix"
(
{ pkgs, modulesPath, ... }:
{
boot.kernelPackages = pkgs.linuxPackagesFor (
pkgs.linux_6_15.override {
argsOverride = rec {
src = pkgs.fetchFromGitHub {
owner = "torvalds";
repo = "linux";
rev = "ada1b0436b5a290923b072b2eb0368a7869bf680";
sha256 = "sha256-dssKqIvWe3pSIdooOibnU1laE0/egJhdiFXuMcwzaHs=";
};
dontStrip = true;
version = "6.15.0";
modDirVersion = "6.15.0";
};
}
);
nixpkgs.config.allowBroken = true;
boot.kernelPatches = [
{
name = "somepatch";
patch = ./somepatch.patch;
}
];
system.stateVersion = "25.11";
}
)
];
};