{ lib, buildLinux, fetchurl , kernelPatches ? [ ] , structuredExtraConfig ? {} , extraMeta ? {} , argsOverride ? {} , ... } @ args: let version = "5.15.96-rt61"; # updated by ./update-rt.sh branch = lib.versions.majorMinor version; kversion = builtins.elemAt (lib.splitString "-" version) 0; in buildLinux (args // { inherit version; # modDirVersion needs a patch number, change X.Y-rtZ to X.Y.0-rtZ. modDirVersion = if (builtins.match "[^.]*[.][^.]*-.*" version) == null then version else lib.replaceStrings ["-"] [".0-"] version; src = fetchurl { url = "mirror://kernel/linux/kernel/v5.x/linux-${kversion}.tar.xz"; sha256 = "167g34xjbqxr5klqp127j2j15pms4jmgs0y7gr8zipiz2i69g39l"; }; kernelPatches = let rt-patch = { name = "rt"; patch = fetchurl { url = "mirror://kernel/linux/kernel/projects/rt/${branch}/older/patch-${version}.patch.xz"; sha256 = "1s6h80q4sddnsxjx4ilc52j4kvxwbzj638rbh7wwxvknh21vkwvl"; }; }; in [ rt-patch ] ++ kernelPatches; structuredExtraConfig = with lib.kernel; { PREEMPT_RT = yes; # Fix error: unused option: PREEMPT_RT. EXPERT = yes; # PREEMPT_RT depends on it (in kernel/Kconfig.preempt) # Fix error: option not set correctly: PREEMPT_VOLUNTARY (wanted 'y', got 'n'). PREEMPT_VOLUNTARY = lib.mkForce no; # PREEMPT_RT deselects it. # Fix error: unused option: RT_GROUP_SCHED. RT_GROUP_SCHED = lib.mkForce (option no); # Removed by sched-disable-rt-group-sched-on-rt.patch. } // structuredExtraConfig; extraMeta = extraMeta // { inherit branch; }; } // argsOverride)