# Do not modify this file!  It was generated by ‘nixos-generate-config’
# and may be overwritten by future invocations.  Please make changes
# to /etc/nixos/configuration.nix instead.
{
  config,
  lib,
  pkgs,
  modulesPath,
  ...
}:
{
  imports = [
    (modulesPath + "/installer/scan/not-detected.nix")
  ];

  boot.kernelParams = [
    # === NVMe power management (relaxed 2026-10) ===
    #
    # These began as a hard workaround for NVMe freezes on the KINGBANK KP260
    # (a DRAM-less QLC drive, prone to slow APST wakeups): APST fully disabled,
    # the command timeout pushed to the maximum, and PCIe ASPM turned off.
    # Kernel logs from 2026-09-19..10-03 (8 boots) show no NVMe
    # timeout/reset/AER, so it is relaxed to reclaim idle power and let the
    # kernel recover a stuck command instead of hanging on it:
    #
    #   - APST allowed again, capped at a wide 100 ms latency (was: disabled).
    #   - io_timeout back to the kernel default 30 s (was: ~49 days, which let
    #     a stuck command wait forever instead of resetting the controller).
    #   - pcie_aspm removed: PCIe link power saving is unrelated to the drive's
    #     own APST.
    #
    # If freezes return under heavy read/write, restore the old workaround:
    #   nvme_core.default_ps_max_latency_us=0 nvme_core.io_timeout=4294967295 pcie_aspm=off
    # See https://community.frame.work/t/nvme-timeout-woes/54999
    "nvme_core.default_ps_max_latency_us=100000"
  ];

  # Use the EFI boot loader.
  boot.loader.efi.canTouchEfiVariables = true;
  # depending on how you configured your disk mounts, change this to /boot or /boot/efi.
  boot.loader.efi.efiSysMountPoint = "/boot";
  boot.loader.systemd-boot.enable = true;

  # https://github.com/NixOS/nixpkgs/blob/nixos-unstable/pkgs/top-level/linux-kernels.nix
  boot.kernelPackages = pkgs.linuxPackages_latest;

  boot.initrd.availableKernelModules = [
    "xhci_pci"
    "ahci"
    "nvme"
    "usbhid"
    "usb_storage"
    "sd_mod"
  ];
  # clear /tmp on boot to get a stateless /tmp directory.
  boot.tmp.cleanOnBoot = true;

  # Enable binfmt emulation of aarch64-linux, this is required for cross compilation.
  boot.binfmt.emulatedSystems = [
    "aarch64-linux"
    "riscv64-linux"
  ];
  # This enables the kernel to preload the emulator binaries when the binfmt registrations are added,
  # obviating the need to make the emulator binaries available inside chroots and chroot-like sandboxes.
  boot.binfmt.preferStaticEmulators = true; # required to work with podman

  # supported file systems, so we can mount any removable disks with these filesystems
  boot.supportedFilesystems = [
    "ext4"
    "btrfs"
    "xfs"
    "ntfs"
    "fat"
    "vfat"
    "exfat"
  ];

  # LUKS initrd, all fileSystems (/, /boot, /btr_pool, /nix, /persistent, /snapshots, /tmp, /swap)
  # and swap (including /swap/swapfile bind and swapDevices) are managed by disko (disko-fs.nix).

  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
  # (the default) this is the recommended approach. When using systemd-networkd it's
  # still possible to use this option, but it's recommended to use it in conjunction
  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
  networking.useDHCP = lib.mkDefault true;
  # networking.interfaces.enp5s0.useDHCP = lib.mkDefault true;
  # networking.interfaces.wlo1.useDHCP = lib.mkDefault true;

  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
  powerManagement.cpuFreqGovernor = lib.mkDefault "performance"; # ondemand / powersave / performance
  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
}