init: NixOS flake config with home-manager and Vietnamese input
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# nixos-config
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Personal NixOS configuration using flakes and home-manager.
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## Structure
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```
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nixos-config/
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├── flake.nix # Entry point — inputs and outputs
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├── hosts/
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│ └── nixos/
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│ ├── configuration.nix # System configuration
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│ └── hardware-configuration.nix # Auto-generated, machine-specific
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└── home/
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└── duynguyen/
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└── default.nix # Home-manager config (user packages, dotfiles)
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```
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## What's configured
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- **KDE Plasma 6** on Wayland via SDDM
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- **Vietnamese input** via fcitx5 + unikey (Telex/VNI)
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- After switching, go to System Settings → Virtual Keyboard → select "Fcitx 5"
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- **Locale**: English UI, Vietnamese formats (currency, time, etc.), Asia/Ho_Chi_Minh timezone
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- **Pipewire** for audio
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- **Packages**: firefox, kate, claude-code, git
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## Reproducing on a fresh machine
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### 1. Install NixOS
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Boot the NixOS ISO, partition, and install as normal. During install, choose KDE Plasma if prompted.
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### 2. Enable flakes temporarily
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```bash
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nix-shell -p git --command "bash"
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# or just proceed if git is already available
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```
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### 3. Clone this repo
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```bash
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git clone <repo-url> ~/nixos-config
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cd ~/nixos-config
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```
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### 4. Replace the hardware config
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The `hardware-configuration.nix` inside `hosts/nixos/` is machine-specific. Replace it with your own:
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```bash
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cp /etc/nixos/hardware-configuration.nix ~/nixos-config/hosts/nixos/hardware-configuration.nix
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```
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### 5. Apply the configuration
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```bash
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sudo nixos-rebuild switch --flake ~/nixos-config#nixos
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```
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### 6. Lock the flake inputs
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```bash
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nix flake update
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```
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Commit the resulting `flake.lock` so future rebuilds use the exact same package versions.
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## Daily usage
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| Task | Command |
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|------|---------|
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| Apply system + home changes | `sudo nixos-rebuild switch --flake ~/nixos-config#nixos` |
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| Update all inputs | `nix flake update` |
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| Roll back last switch | `sudo nixos-rebuild switch --rollback` |
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| Search packages | `nix search nixpkgs <name>` |
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## Adding packages
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- **System-wide** (available to all users): `hosts/nixos/configuration.nix` → `environment.systemPackages`
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- **User-level** (home-manager managed): `home/duynguyen/default.nix` → `home.packages`
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- **Per-user via NixOS**: `hosts/nixos/configuration.nix` → `users.users.duynguyen.packages`
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## Vietnamese input setup (fcitx5)
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After first build:
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1. Go to **System Settings → Input Devices → Virtual Keyboard**
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2. Select **Fcitx 5** and apply
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3. In the system tray, right-click the fcitx5 icon → **Configure**
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4. Add **Unikey** as an input method
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5. Switch between English/Vietnamese with **Super+Space**
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Unikey supports both **Telex** (default) and **VNI** — configure in the Unikey settings.
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@@ -0,0 +1,26 @@
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{
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description = "duynguyen's NixOS configuration";
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inputs = {
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nixpkgs.url = "github:nixos/nixpkgs/nixos-26.05";
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home-manager = {
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url = "github:nix-community/home-manager/release-26.05";
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inputs.nixpkgs.follows = "nixpkgs";
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};
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};
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outputs = { self, nixpkgs, home-manager, ... }: {
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nixosConfigurations.nixos = nixpkgs.lib.nixosSystem {
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system = "x86_64-linux";
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modules = [
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./hosts/nixos/configuration.nix
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home-manager.nixosModules.home-manager
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{
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home-manager.useGlobalPkgs = true;
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home-manager.useUserPackages = true;
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home-manager.users.duynguyen = import ./home/duynguyen/default.nix;
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}
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];
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};
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};
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}
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@@ -0,0 +1,21 @@
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{ config, pkgs, ... }:
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{
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home.username = "duynguyen";
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home.homeDirectory = "/home/duynguyen";
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home.stateVersion = "26.05";
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home.packages = with pkgs; [
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# Add user-level packages here
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];
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programs.bash.enable = true;
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programs.git = {
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enable = true;
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userName = "duynguyen";
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userEmail = "huonghaiduynhim@gmail.com";
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};
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programs.home-manager.enable = true;
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}
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@@ -0,0 +1,81 @@
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{ config, pkgs, ... }:
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{
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imports = [ ./hardware-configuration.nix ];
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# Bootloader
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boot.loader.grub.enable = true;
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boot.loader.grub.device = "/dev/sda";
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boot.loader.grub.useOSProber = true;
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# Enable flakes and nix-command
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nix.settings.experimental-features = [ "nix-command" "flakes" ];
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networking.hostName = "nixos";
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networking.networkmanager.enable = true;
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time.timeZone = "Asia/Ho_Chi_Minh";
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i18n.defaultLocale = "en_US.UTF-8";
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i18n.inputMethod = {
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enable = true;
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type = "fcitx5";
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fcitx5.addons = with pkgs; [
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qt6Packages.fcitx5-unikey
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fcitx5-gtk
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];
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};
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i18n.extraLocaleSettings = {
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LC_ADDRESS = "vi_VN";
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LC_IDENTIFICATION = "vi_VN";
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LC_MEASUREMENT = "vi_VN";
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LC_MONETARY = "vi_VN";
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LC_NAME = "vi_VN";
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LC_NUMERIC = "vi_VN";
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LC_PAPER = "vi_VN";
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LC_TELEPHONE = "vi_VN";
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LC_TIME = "vi_VN";
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};
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services.xserver.enable = true;
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services.displayManager.sddm.enable = true;
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services.desktopManager.plasma6.enable = true;
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services.xserver.xkb = {
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layout = "us";
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variant = "";
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};
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services.printing.enable = true;
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services.pulseaudio.enable = false;
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security.rtkit.enable = true;
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services.pipewire = {
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enable = true;
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alsa.enable = true;
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alsa.support32Bit = true;
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pulse.enable = true;
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};
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users.users.duynguyen = {
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isNormalUser = true;
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description = "duynguyen";
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extraGroups = [ "networkmanager" "wheel" ];
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packages = with pkgs; [
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kdePackages.kate
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];
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};
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programs.firefox.enable = true;
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nixpkgs.config.allowUnfree = true;
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environment.systemPackages = with pkgs; [
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claude-code
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git
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];
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system.stateVersion = "26.05";
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}
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@@ -0,0 +1,26 @@
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# Do not modify this file! It was generated by ‘nixos-generate-config’
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# and may be overwritten by future invocations. Please make changes
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# to /etc/nixos/configuration.nix instead.
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{ config, lib, pkgs, modulesPath, ... }:
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{
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imports =
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[ (modulesPath + "/profiles/qemu-guest.nix")
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];
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boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "virtio_pci" "virtio_scsi" "sd_mod" "sr_mod" ];
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boot.initrd.kernelModules = [ ];
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boot.kernelModules = [ ];
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boot.extraModulePackages = [ ];
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fileSystems."/" =
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{ device = "/dev/disk/by-uuid/51da3f97-16fa-4ed5-a12f-a4466b66359f";
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fsType = "ext4";
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};
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swapDevices =
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[ { device = "/dev/disk/by-uuid/7a05616d-d8d8-4fa5-9810-49118204c9f2"; }
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];
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nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
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}
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