{ config, lib, pkgs, ... }: let btrfs = "/dev/disk/by-uuid/69ab72d4-6ced-4f70-8b5e-aa2daa8c0b6b"; in { boot = { initrd = { kernelModules = [ "amdgpu" ]; availableKernelModules = [ "nvme" "xhci_pci" "thunderbolt" "uas" "sd_mod" ]; verbose = false; }; kernelPackages = lib.mkForce pkgs.linuxPackages_xanmod_latest; kernelModules = [ "kvm-amd" ]; tmp.useTmpfs = true; kernel.sysctl = { "fs.file-max" = 9223372036854775807; }; }; services.scx = { enable = true; scheduler = "scx_rusty"; }; fileSystems."/" = { device = btrfs; fsType = "btrfs"; options = [ "compress=zstd" "subvol=root" ]; }; fileSystems."/nix" = { device = btrfs; fsType = "btrfs"; options = [ "compress=zstd" "subvol=nix" ]; }; my.persist.location = "/nix/persist"; fileSystems."/nix/persist" = { device = btrfs; fsType = "btrfs"; options = [ "compress=zstd" "subvol=persist" ]; neededForBoot = true; }; boot.initrd.postDeviceCommands = lib.mkAfter '' mkdir /btrfs_tmp mount ${btrfs} /btrfs_tmp mkdir -p /btrfs_tmp/old_roots if [[ -e /btrfs_tmp/root ]]; then timestamp=$(date --date="@$(stat -c %Y /btrfs_tmp/root)" "+%Y-%m-%-d_%H:%M:%S") mv /btrfs_tmp/root "/btrfs_tmp/old_roots/$timestamp" fi delete_subvolume_recursively() { IFS=$'\n' for i in $(btrfs subvolume list -o "$1" | cut -f 9- -d ' '); do delete_subvolume_recursively "/btrfs_tmp/$i" done btrfs subvolume delete "$1" } for i in $(find /btrfs_tmp/old_roots/ -maxdepth 1 -mtime +14); do delete_subvolume_recursively "$i" done btrfs subvolume create /btrfs_tmp/root umount /btrfs_tmp ''; fileSystems."/boot" = { device = "/dev/disk/by-uuid/96D3-93B0"; fsType = "vfat"; options = [ "uid=0" "gid=0" "fmask=0077" "dmask=0077" ]; }; networking.useDHCP = lib.mkDefault false; hardware.enableRedistributableFirmware = lib.mkDefault true; hardware.cpu.amd.updateMicrocode = config.hardware.enableRedistributableFirmware; nixpkgs.hostPlatform = lib.mkForce "x86_64-linux"; }