feat: environment variables for wayland & nvidia

home/linux/gui/hyprland/hyprland.nix

@@ -0,0 +1,55 @@
+{
+  pkgs,
+  config,
+  ...
+}:
+let
+  package = pkgs.hyprland;
+in
+{
+  xdg.configFile =
+    let
+      mkSymlink = config.lib.file.mkOutOfStoreSymlink;
+      confPath = "${config.home.homeDirectory}/nix-config/home/linux/gui/hyprland/conf";
+    in
+    {
+      "hypr/configs".source = mkSymlink confPath;
+    };
+
+  # NOTE:
+  # We have to enable hyprland/i3's systemd user service in home-manager,
+  # so that gammastep/wallpaper-switcher's user service can be start correctly!
+  # they are all depending on hyprland/i3's user graphical-session
+  wayland.windowManager.hyprland = {
+    inherit package;
+    enable = true;
+    settings = {
+      source =
+        let
+          configPath = "${config.home.homeDirectory}/.config/hypr/configs";
+        in
+        [
+          "${configPath}/exec.conf"
+          "${configPath}/fcitx5.conf"
+          "${configPath}/keybindings.conf"
+          "${configPath}/settings.conf"
+          "${configPath}/windowrules.conf"
+        ];
+      env = [
+
+      ];
+    };
+    # gammastep/wallpaper-switcher need this to be enabled.
+    systemd = {
+      enable = true;
+      variables = [ "--all" ];
+    };
+  };
+
+  # NOTE: this executable is used by greetd to start a wayland session when system boot up
+  # with such a vendor-no-locking script, we can switch to another wayland compositor without modifying greetd's config in NixOS module
+  home.file.".wayland-session" = {
+    source = "${package}/bin/Hyprland";
+    executable = true;
+  };
+}