refactor: start i3/hyprland in home-manager instead of NixOS

home/linux/i3/bin/logout

@@ -0,0 +1 @@
+i3-msg exit

home/linux/i3/config

@@ -261,8 +261,7 @@ exec --no-startup-id dex --autostart --environment i3
 exec --no-startup-id ~/.screenlayout/monitor.sh
 
 # set wallpaper
-# exec --no-startup-id sleep 2 && nitrogen --restore
-exec --no-startup-id sleep 1 && feh --bg-fill ~/.config/wallpapers/default_wallpaper
+exec --no-startup-id sleep 1 && systemctl --user restart wallpaper.service
 
 # set powersavings for display:
 exec --no-startup-id xset s 480 dpms 600 600 600

home/linux/i3/default.nix

@@ -1,35 +1,55 @@
-{pkgs, ...}: {
+_: {
   # i3 window manager's config, based on https://github.com/endeavouros-team/endeavouros-i3wm-setup
 
   imports = [
+    ./packages.nix
     ./x11-apps.nix
   ];
 
-  home.file = {
-    ".config/i3/config".source = ./config;
-    ".config/i3/i3blocks.conf".source = ./i3blocks.conf;
-    ".config/i3/scripts" = {
+  # NOTE:
+  # We have to enable hyprland/i3's systemd user service in home-manager,
+  # so that gammastep/wallpaper-switcher's user service can be start correctly!
+  # they are all depending on hyprland/i3's user graphical-session
+  xsession = {
+    enable = true;
+    windowManager.i3 = {
+      enable = true;
+      extraConfig = builtins.readFile ./config;
+    };
+    # Path, relative to HOME, where Home Manager should write the X session script.
+    # and NixOS will use it to start xorg session when system boot up
+    scriptPath = ".xsession";
+  };
+
+  xdg.configFile = {
+    "i3/i3blocks.conf".source = ./i3blocks.conf;
+    "i3/scripts" = {
       source = ./scripts;
       # copy the scripts directory recursively
       recursive = true;
       executable = true; # make all scripts executable
     };
-    ".config/i3/layouts" = {
+    "i3/layouts" = {
       source = ./layouts;
       recursive = true;
     };
-
     # rofi is a application launcher and dmenu replacement
-    ".config/rofi" = {
+    "rofi" = {
       source = ./rofi-conf;
       # copy the scripts directory recursively
       recursive = true;
     };
+  };
 
+  home.file = {
     ".local/bin/bright" = {
       source = ./bin/bright;
       executable = true;
     };
+    ".local/bin/logout" = {
+      source = ./bin/logout;
+      executable = true;
+    };
 
     # xrandr - set primary screen
     ".screenlayout/monitor.sh".source = ./dual-monitor-4k-1080p.sh;

home/linux/i3/packages.nix

@@ -0,0 +1,24 @@
+{pkgs, ...}: {
+  home.packages = with pkgs; [
+    rofi # application launcher, the same as dmenu
+    dunst # notification daemon
+    i3blocks # status bar
+    i3lock # default i3 screen locker
+    xautolock # lock screen after some time
+    i3status # provide information to i3bar
+    i3-gaps # i3 with gaps
+    picom # transparency and shadows
+    feh # set wallpaper
+    xcolor # color picker
+
+    acpi # battery information
+    arandr # screen layout manager
+    dex # autostart applications
+    xbindkeys # bind keys to commands
+    xorg.xbacklight # control screen brightness, the same as light
+    xorg.xdpyinfo # get screen information
+    scrot # minimal screen capture tool, used by i3 blur lock to take a screenshot
+    sysstat # get system information
+    alsa-utils # provides amixer/alsamixer/...
+  ];
+}