nix-files/hosts/common/hardware/default.nix

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{ lib, pkgs, ... }:
{
imports = [
./x86_64.nix
];
boot.initrd.supportedFilesystems = [ "ext4" "btrfs" "ext2" "ext3" "vfat" ];
# useful emergency utils
boot.initrd.extraUtilsCommands = ''
copy_bin_and_libs ${pkgs.btrfs-progs}/bin/btrfstune
'';
boot.kernelParams = [ "boot.shell_on_fail" ];
# other kernelParams:
# "boot.trace"
# "systemd.log_level=debug"
# "systemd.log_target=console"
# hack in the `boot.shell_on_fail` arg since that doesn't always seem to work.
boot.initrd.preFailCommands = "allowShell=1";
# default: 4 (warn). 7 is debug
boot.consoleLogLevel = 7;
boot.loader.grub.enable = lib.mkDefault false;
boot.loader.generic-extlinux-compatible.enable = lib.mkDefault true;
# non-free firmware
hardware.enableRedistributableFirmware = true;
# powertop will default to putting USB devices -- including HID -- to sleep after TWO SECONDS
powerManagement.powertop.enable = false;
# linux CPU governor: <https://www.kernel.org/doc/Documentation/cpu-freq/governors.txt>
# - "powersave" => force CPU to always run at lowest supported frequency
# - "performance" => force CPU to always run at highest frequency
# - "ondemand" => adjust frequency based on load
# - "conservative" (ondemand but slower to adjust)
# - "schedutil"
# - "userspace"
powerManagement.cpuFreqGovernor = "ondemand";
services.logind.extraConfig = ''
# dont shutdown when power button is short-pressed
HandlePowerKey=ignore
'';
# services.snapper.configs = {
# root = {
# subvolume = "/";
# extraConfig = {
# ALLOW_USERS = "colin";
# };
# };
# };
# services.snapper.snapshotInterval = "daily";
}