29 lines
888 B
Nix
29 lines
888 B
Nix
{ pkgs
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, lib
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, config
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, ... }: with lib; let
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cfg = config.global.kernel;
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in {
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options.global.kernel = {
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enable = mkEnableOption "kernel version and configuration" // { default = true; };
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lts = mkEnableOption "longterm kernel releases";
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sysctl = {
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enable = mkEnableOption "sysctl presets" // { default = true; };
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harden = mkEnableOption "hardening sysctls" // { default = true; };
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swappiness = mkOption {
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type = with types; int;
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default = 0;
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description = "vm.swappiness value, should be zero for low memory SSD systems";
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};
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};
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};
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config = mkIf cfg.enable {
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boot.kernel.sysctl = {
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"kernel.dmesg_restrict" = mkIf cfg.sysctl.harden 1;
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"vm.swappiness" = cfg.sysctl.swappiness;
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};
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boot.kernelPackages = with pkgs; mkOverride 1001 (if cfg.lts then linuxPackages else linuxPackages_latest);
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};
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}
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