docs: add README.md

system/dev/dn-lap/boot.nix

@@ -2,11 +2,12 @@
 
 {
   boot.loader.systemd-boot.enable = true;
+
+  # Enable F keys in some wireless keyboard (Ex. neo65)
   boot.extraModprobeConfig = ''
     options hid_apple fnmode=2
   '';
 
   boot.initrd.systemd.enable = true;
   boot.initrd.kernelModules = [ "i915" ];
-  boot.swraid.enable = true;
 }

system/dev/dn-lap/default.nix

@@ -1,7 +1,18 @@
-{ lib, system, inputs, nix-version, ... }:
+{
+  lib,
+  system,
+  inputs,
+  nix-version,
+  ...
+}:
 
 let
   cursor-size = "24";
+  username = "danny";
+  git-config = {
+    username = "DACHXY";
+    email = "danny10132024@gmail.com";
+  };
 in
 {
   imports = [
@@ -19,8 +30,18 @@ in
   system.stateVersion = nix-version;
   home-manager = {
     backupFileExtension = "hm-backup";
-    extraSpecialArgs = { inherit inputs system nix-version cursor-size; };
-    users."danny" = { imports = [ ../../../home ]; };
+    extraSpecialArgs = {
+      inherit
+        inputs
+        system
+        nix-version
+        cursor-size
+        git-config
+        username
+        ;
+    };
+    users."${username}" = {
+      imports = [ ../../../home ];
+    };
   };
 }
-

system/dev/dn-pre7780/boot.nix

@@ -1,18 +1,26 @@
-{ config, pkgs, lib, ... }:
+{ ... }:
 
 {
   boot.loader.systemd-boot.enable = true;
-  boot.kernelParams =
-    [ "nvidia-drm.fbdev=1" "nvidia.NVreg_PreserveVideoMemoryAllocations=1" ];
+  boot.kernelParams = [
+    "nvidia-drm.fbdev=1"
+    "nvidia.NVreg_PreserveVideoMemoryAllocations=1"
+  ];
+
+  # Enable F keys in some wireless keyboard (Ex. neo65)
   boot.extraModprobeConfig = ''
     options hid_apple fnmode=2
     options nvidia_drm modeset=1 dbdev=1
   '';
 
   boot.initrd.systemd.enable = true;
-  boot.initrd.kernelModules =
-    [ "nvidia" "i915" "nvidia_modeset" "nvidia_uvm" "nvidia_drm" ];
+  boot.initrd.kernelModules = [
+    "nvidia"
+    "i915"
+    "nvidia_modeset"
+    "nvidia_uvm"
+    "nvidia_drm"
+  ];
   boot.swraid.enable = true;
-  boot.swraid.mdadmConf =
-    "\n  MAILADDR smitty\n  ARRAY /dev/md126 metadata=1.2 name=stuff:0\n  UUID=3b0b7c51-2681-407e-a22a-e965a8aeece7\n  ";
+  boot.swraid.mdadmConf = "\n  MAILADDR smitty\n  ARRAY /dev/md126 metadata=1.2 name=stuff:0\n  UUID=3b0b7c51-2681-407e-a22a-e965a8aeece7\n  ";
 }

system/dev/dn-pre7780/default.nix

@@ -1,7 +1,18 @@
-{ lib, inputs, system, nix-version, ... }:
+{
+  lib,
+  inputs,
+  system,
+  nix-version,
+  ...
+}:
 
 let
   cursor-size = "32";
+  username = "danny";
+  git-config = {
+    username = "DACHXY";
+    email = "danny10132024@gmail.com";
+  };
 in
 {
   imports = [
@@ -23,8 +34,18 @@ in
     backupFileExtension = "hm-backup";
     useUserPackages = true;
     useGlobalPkgs = true;
-    extraSpecialArgs = { inherit inputs system nix-version cursor-size; };
-    users."danny" = { imports = [ ../../../home ]; };
+    extraSpecialArgs = {
+      inherit
+        inputs
+        system
+        nix-version
+        cursor-size
+        git-config
+        username
+        ;
+    };
+    users."${username}" = {
+      imports = [ ../../../home ];
+    };
   };
 }
-

system/modules/auto-upgrade.nix

@@ -1,15 +1,21 @@
 { ... }:
 
 {
-  # Scheduled auto upgrade system (this is only for system upgrades, 
-  # if you want to upgrade cargo\npm\pip global packages, docker containers or different part of the system 
+  # Scheduled auto upgrade system (this is only for system upgrades,
+  # if you want to upgrade cargo\npm\pip global packages, docker containers or different part of the system
   # or get really full system upgrade, use `topgrade` CLI utility manually instead.
   # I recommend running `topgrade` once a week or at least once a month)
   system.autoUpgrade = {
     enable = true;
     operation = "switch"; # If you don't want to apply updates immediately, only after rebooting, use `boot` option in this case
     flake = "/etc/nixos";
-    flags = [ "--update-input" "nixpkgs" "--update-input" "rust-overlay" "--commit-lock-file" ];
+    flags = [
+      "--update-input"
+      "nixpkgs"
+      "--update-input"
+      "rust-overlay"
+      "--commit-lock-file"
+    ];
     dates = "weekly";
     # channel = "https://nixos.org/channels/nixos-unstable";
   };

system/modules/display-manager.nix

@@ -2,24 +2,10 @@
 
 {
   services = {
-    # greetd = {
-    #   enable = true;
-    #   settings = {
-    #     default_session = {
-    #       command = "${pkgs.greetd.tuigreet}/bin/tuigreet --time --time-format '%I:%M %p | %a • %h | %F' --cmd Hyprland";
-    #       user = "danny";
-    #     };
-    #   };
-    # };
-
     displayManager = {
-      # sddm.wayland.enable = true;
+      sddm.wayland.enable = true;
       sddm.enable = true;
       sddm.theme = "${import ./sddm-theme.nix { inherit pkgs; }}";
     };
   };
-
-  # environment.systemPackages = with pkgs; [
-  #   greetd.tuigreet
-  # ];
 }

system/modules/dn-ca.nix

@@ -1,6 +1,7 @@
 { ... }:
 
 {
+  # This is my CA root cerificate, you shall delete it
   security.pki.certificates = [
     ''
       -----BEGIN CERTIFICATE-----

system/modules/fonts.nix

@@ -1,25 +1,37 @@
 { pkgs, nix-version, ... }:
 let
-  nerdfont-pkg = if nix-version == "25.05" then pkgs.nerd-fonts.caskaydia-cove else (pkgs.nerdfonts.override { fonts = [ "CascadiaCode" ]; });
+  nerdfont-pkg =
+    if nix-version == "25.05" then
+      pkgs.nerd-fonts.caskaydia-cove
+    else
+      (pkgs.nerdfonts.override { fonts = [ "CascadiaCode" ]; });
 in
 {
-  fonts.packages = (with pkgs; [
-    font-awesome
-    jetbrains-mono
-    noto-fonts-cjk-sans
-    noto-fonts-cjk-serif
-    noto-fonts-emoji
-  ]) ++ ([
-    nerdfont-pkg
-  ]);
+  fonts.packages =
+    (with pkgs; [
+      font-awesome
+      jetbrains-mono
+      noto-fonts-cjk-sans
+      noto-fonts-cjk-serif
+      noto-fonts-emoji
+    ])
+    ++ ([
+      nerdfont-pkg
+    ]);
 
   fonts.fontDir.enable = true;
 
   fonts.fontconfig = {
     enable = true;
     defaultFonts = {
-      serif = [ "CaskaydiaCove Nerd Font" "Noto Sans CJK" ];
-      sansSerif = [ "CaskaydiaCove Nerd Font" "Noto Sans CJK" ];
+      serif = [
+        "CaskaydiaCove Nerd Font"
+        "Noto Sans CJK"
+      ];
+      sansSerif = [
+        "CaskaydiaCove Nerd Font"
+        "Noto Sans CJK"
+      ];
       monospace = [ "CaskaydiaCove Nerd Font Mono" ];
     };
     cache32Bit = true;

system/modules/services.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ username, pkgs, ... }:
 
 {
   systemd.services.flatpak-repo = {
@@ -20,7 +20,7 @@
       ports = [ 22 ];
       settings = {
         PasswordAuthentication = false;
-        AllowUsers = [ "danny" ];
+        AllowUsers = [ username ];
         UseDns = true;
         PermitRootLogin = "no";
       };
@@ -31,7 +31,6 @@
       xkb.layout = "us";
     };
 
-
     # USB auto mount
     gvfs.enable = true;
     udisks2.enable = true;

system/modules/users.nix

@@ -1,9 +1,16 @@
-{ config, pkgs, ... }:
+{ username, pkgs, ... }:
 
 {
-  users.users.danny = {
+  users.users.${username} = {
     isNormalUser = true;
     shell = pkgs.bash; # Actually fish
-    extraGroups = [ "wheel" "input" "networkmanager" "docker" "libvirtd" "kvm" ];
+    extraGroups = [
+      "wheel"
+      "input"
+      "networkmanager"
+      "docker"
+      "libvirtd"
+      "kvm"
+    ];
   };
 }

system/modules/virtualization.nix

@@ -1,8 +1,13 @@
-{ pkgs, config, ... }:
+{
+  username,
+  pkgs,
+  config,
+  ...
+}:
 
 {
   programs.virt-manager.enable = true;
-  users.groups.libvirtd.members = [ "danny" ];
+  users.groups.libvirtd.members = [ username ];
 
   virtualisation = {
     docker.enable = true;

system/modules/wireguard.nix

@@ -1,8 +1,16 @@
-{ config, pkgs, ... }:
+{ ... }:
 let
   configPath = "/etc/wireguard/wg0.conf";
 in
 {
-  networking.firewall = { allowedUDPPorts = [ 51820 ]; };
-  networking.wg-quick.interfaces.wg0.configFile = configPath;
+  networking.firewall = {
+    allowedUDPPorts = [ 51820 ];
+  };
+  networking.wg-quick.interfaces.wg0 =
+    if builtins.pathExists configPath then
+      {
+        configFile = configPath;
+      }
+    else
+      { };
 }