ark/hosts/lungmen/default.nix

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Nix
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{
config,
lib,
pkgs,
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inputs,
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...
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}: let
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btrfsPartPath = "/dev/disk/by-label/NIXOS";
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btrfsOptions = ["compress-force=zstd" "noatime"];
btrfsDiff =
pkgs.writeScriptBin
"btrfs-diff"
''
#!${pkgs.bash}/bin/bash
set -euo pipefail
sudo mkdir -p /mnt
sudo mount -o subvol=/ ${btrfsPartPath} /mnt
OLD_TRANSID=$(sudo btrfs subvolume find-new /mnt/root-blank 9999999)
sudo btrfs subvolume find-new "/mnt/root" "$OLD_TRANSID" |
sed '$d' |
cut -f17- -d' ' |
sort |
uniq |
while read path; do
path="/$path"
if [ -L "$path" ]; then
: # The path is a symbolic link, so is probably handled by NixOS already
elif [ -d "$path" ]; then
: # The path is a directory, ignore
else
echo "$path"
fi
done
sudo umount /mnt
'';
in {
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imports = with inputs;
with nixos-hardware.nixosModules; [
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nixpkgs.nixosModules.notDetected
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nixos-persistence.nixosModule
common-pc-ssd
common-pc
common-gpu-amd
common-cpu-amd
../../modules/network/dns
../../users/root
../../users/patriot
];
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boot = {
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tmpOnTmpfs = true;
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loader = {
efi.canTouchEfiVariables = true;
systemd-boot.enable = true;
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systemd-boot.configurationLimit = 10;
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};
kernelPackages = pkgs.linuxPackages_latest;
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supportedFilesystems = ["btrfs"];
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initrd = {
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availableKernelModules = ["xhci_pci" "ahci" "usb_storage" "usbhid" "sd_mod"];
kernelModules = ["amdgpu"];
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};
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kernelModules = ["kvm-amd"];
extraModulePackages = [];
initrd.postDeviceCommands =
pkgs.lib.mkBefore
''
mkdir -p /mnt
mount -o subvol=/ ${btrfsPartPath} /mnt
btrfs subvolume list -o /mnt/root |
cut -f9 -d' ' |
while read subvolume; do
echo "deleting /$subvolume subvolume..."
btrfs subvolume delete "/mnt/$subvolume"
done &&
echo "deleting /root subvolume..." &&
btrfs subvolume delete /mnt/root
echo "restoring blank /root subvolume"
btrfs subvolume snapshot /mnt/root-blank /mnt/root
umount /mnt
'';
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kernel.sysctl = {"fs.inotify.max_user_watches" = 524288;};
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};
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fileSystems."/" = {
device = btrfsPartPath;
fsType = "btrfs";
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options = ["subvol=root"] ++ btrfsOptions;
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};
fileSystems."/home" = {
device = btrfsPartPath;
fsType = "btrfs";
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options = ["subvol=home"] ++ btrfsOptions;
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};
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#fileSystems."/media/archive" = {
# device = "/dev/disk/by-uuid/f9b5f7f3-51e8-4357-8518-986b16311c71";
# fsType = "btrfs";
# options = btrfsOptions;
#};
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fileSystems."/nix" = {
device = btrfsPartPath;
fsType = "btrfs";
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options = ["subvol=nix"] ++ btrfsOptions;
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};
fileSystems."/persist" = {
device = btrfsPartPath;
fsType = "btrfs";
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options = ["subvol=persist"] ++ btrfsOptions;
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neededForBoot = true;
};
fileSystems."/boot" = {
device = "/dev/disk/by-uuid/5784-BBB1";
fsType = "vfat";
};
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swapDevices = [];
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zramSwap = {
enable = true;
algorithm = "zstd";
};
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nix.maxJobs = lib.mkDefault 4;
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security = {
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pam.loginLimits = [
{
domain = "*";
type = "soft";
item = "nofile";
value = "524288";
}
{
domain = "*";
type = "hard";
item = "nofile";
value = "524288";
}
];
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allowSimultaneousMultithreading = false;
# Deleting root subvolume makes sudo show lecture every boot
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sudo.extraConfig = ''
Defaults lecture = never
'';
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rtkit.enable = true;
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};
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sound.enable = false;
services.pipewire = {
enable = true;
alsa.enable = true;
alsa.support32Bit = true;
pulse.enable = true;
};
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hardware = {
opengl = {
driSupport = true;
driSupport32Bit = true;
enable = true;
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extraPackages = with pkgs; [amdvlk libvdpau-va-gl vaapiVdpau libva vulkan-loader pipewire];
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extraPackages32 = with pkgs.pkgsi686Linux;
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[libvdpau-va-gl vaapiVdpau libva vulkan-loader pipewire] ++ [pkgs.driversi686Linux.amdvlk];
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};
pulseaudio = {
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enable = false;
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support32Bit = true;
};
};
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fonts = {
enableDefaultFonts = true;
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fontconfig.enable = true;
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fonts = [pkgs.dejavu_fonts];
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};
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environment = {
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systemPackages = [btrfsDiff pkgs.ntfs3g];
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pathsToLink = ["/share/zsh"];
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persistence."/persist" = {
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directories = ["/etc/nixos"];
files = ["/etc/machine-id"];
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};
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variables = {
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VK_ICD_FILENAMES =
lib.mkForce
"${pkgs.amdvlk}/share/vulkan/icd.d/amd_icd64.json:${pkgs.driversi686Linux.amdvlk}/share/vulkan/icd.d/amd_icd32.json";
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};
sessionVariables = {
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VK_ICD_FILENAMES =
lib.mkForce
"${pkgs.amdvlk}/share/vulkan/icd.d/amd_icd64.json:${pkgs.driversi686Linux.amdvlk}/share/vulkan/icd.d/amd_icd32.json";
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};
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};
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networking.interfaces.enp6s0.useDHCP = true;
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services = {
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earlyoom.enable = true;
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ipfs = {
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enable = false;
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enableGC = true;
autoMount = true;
};
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flatpak.enable = false;
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xserver.videoDrivers = ["amdgpu"];
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};
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virtualisation = {
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podman.enable = true;
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libvirtd.enable = false;
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};
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system.stateVersion = "20.09";
}