fix(conf/home-manager): update dunst to use recursive icon lookup

.config/home-manager/modules/desktop/services/dunst.nix

@@ -1,107 +1,143 @@
 {
   pkgs,
   theme,
+  lib,
+  config,
   ...
-}: {
+}:
+with lib; let
+  toDunstIni = generators.toINI {
+    mkKeyValue = key: value: let
+      value' =
+        if isBool value
+        then (lib.hm.booleans.yesNo value)
+        else if isString value
+        then ''"${value}"''
+        else toString value;
+    in "${key}=${value'}";
+  };
+
+  settings = with theme.colors; {
+    global = {
+      frame_width = 1;
+      frame_color = rosewater;
+      font = "FiraCode Nerd Font 10";
+      format = "<b>%a</b>: <i>%s</i> %p\\n%b";
+      markup = "full";
+      sort = "no";
+      indicate_hidden = "yes";
+      alignment = "left";
+      show_age_threshold = 60;
+      word_wrap = "yes";
+      ellipsize = "end";
+      corner_radius = 8;
+      mouse_left_click = "close_current";
+      mouse_right_click = "do_action";
+      ignore_newline = "no";
+      width = "(200, 400)";
+      height = 400;
+      offset = "10x30";
+      shrink = "yes";
+      transparency = 15;
+      idle_threshold = 60;
+      monitor = 0;
+      follow = "none";
+      sticky_history = true;
+      history_length = 100;
+
+      # Display indicators for URLs (U) and actions (A).
+      show_indicators = false;
+
+      # The height of a single line.  If the height is smaller than the
+      # font height, it will get raised to the font height.
+      # This adds empty space above and under the text.
+      line_height = 1;
+
+      # Draw a line of "separator_height" pixel height between two
+      # notifications.
+      # Set to 0 to disable.
+      separator_height = 1;
+
+      # Padding between text and separator.
+      # padding = 8
+      padding = 8;
+
+      # Horizontal padding.
+      horizontal_padding = 10;
+
+      # Define a color for the separator.
+      # possible values are:
+      #  * auto: dunst tries to find a color fitting to the background;
+      #  * foreground: use the same color as the foreground;
+      #  * frame: use the same color as the frame;
+      #  * anything else will be interpreted as a X color.
+      separator_color = lavender;
+
+      # dmenu path.
+      dmenu = "${pkgs.rofi} -dmenu -p dunst:";
+
+      # Browser for opening urls in context menu.
+      browser = "org.mozilla.firefox";
+
+      # Align icons left/right/off
+      icon_position = "left";
+
+      # Paths to default icons.
+
+      # Limit icons size.
+      max_icon_size = 100;
+
+      # uses XDG icon lookup
+      # requires xdg_data_dirs to be set up correctly for systemd.
+      # user bus is not guaranteed to have this set up correctly.
+      # see xdg.configFile."systemd/user.conf"
+      enable_recursive_icon_lookup = true;
+      icon_theme = "Dracula,hicolor";
+    };
+
+    urgency_low = {
+      background = surface1;
+      foreground = subtext1;
+      timeout = 10;
+    };
+
+    urgency_normal = {
+      background = base;
+      foreground = text;
+      timeout = 10;
+    };
+
+    urgency_critical = {
+      background = red;
+      foreground = surface1;
+      frame_color = rosewater;
+      timeout = 0;
+    };
+  };
+in {
   home.packages = [pkgs.dunst];
-  services.dunst = with theme.colors; {
-    enable = true;
 
-    iconTheme = {
-      name = "Dracula Theme";
-      package = pkgs.dracula-icon-theme;
+  xdg.dataFile."dbus-1/services/org.knopwob.dunst.service".source = "${pkgs.dunst}/share/dbus-1/services/org.knopwob.dunst.service";
+
+  # custom settings for icon_path fix
+  xdg.configFile."dunst/dunstrc" = {
+    text = toDunstIni settings;
+    onChange = ''
+      ${pkgs.procps}/bin/pkill -u "$USER" ''${VERBOSE+-e} dunst || true
+    '';
+  };
+
+  systemd.user.services.dunst = {
+    Unit = {
+      Description = "Dunst notification daemon";
+      After = ["graphical-session-pre.target"];
+      PartOf = ["graphical-session.target"];
     };
 
-    settings = {
-      global = {
-        frame_width = 1;
-        frame_color = rosewater;
-        font = "FiraCode Nerd Font 10";
-        format = "<b>%a</b>: <i>%s</i> %p\n%b";
-        markup = "full";
-        sort = "no";
-        indicate_hidden = "yes";
-        alignment = "left";
-        show_age_threshold = 60;
-        word_wrap = "yes";
-        ellipsize = "end";
-        corner_radius = 8;
-        mouse_left_click = "close_current";
-        mouse_right_click = "do_action";
-        ignore_newline = "no";
-        width = "(200, 400)";
-        height = 400;
-        offset = "10x30";
-        shrink = "yes";
-        transparency = 15;
-        idle_threshold = 60;
-        monitor = 0;
-        follow = "none";
-        sticky_history = true;
-        history_length = 100;
-
-        # Display indicators for URLs (U) and actions (A).
-        show_indicators = false;
-
-        # The height of a single line.  If the height is smaller than the
-        # font height, it will get raised to the font height.
-        # This adds empty space above and under the text.
-        line_height = 1;
-
-        # Draw a line of "separator_height" pixel height between two
-        # notifications.
-        # Set to 0 to disable.
-        separator_height = 1;
-
-        # Padding between text and separator.
-        # padding = 8
-        padding = 8;
-
-        # Horizontal padding.
-        horizontal_padding = 10;
-
-        # Define a color for the separator.
-        # possible values are:
-        #  * auto: dunst tries to find a color fitting to the background;
-        #  * foreground: use the same color as the foreground;
-        #  * frame: use the same color as the frame;
-        #  * anything else will be interpreted as a X color.
-        separator_color = lavender;
-
-        # dmenu path.
-        dmenu = "${pkgs.rofi} -dmenu -p dunst:";
-
-        # Browser for opening urls in context menu.
-        browser = "org.mozilla.firefox";
-
-        # Align icons left/right/off
-        icon_position = "left";
-
-        # Paths to default icons.
-        # icon_path = /usr/share/icons/Papirus/48x48/devices/:/usr/share/icons/Papirus/48x48/status/:/usr/share/icons/Papirus/48x48/apps/
-
-        # Limit icons size.
-        max_icon_size = 100;
-      };
-
-      urgency_low = {
-        background = surface1;
-        foreground = subtext1;
-        timeout = 10;
-      };
-
-      urgency_normal = {
-        background = base;
-        foreground = text;
-        timeout = 10;
-      };
-
-      urgency_critical = {
-        background = red;
-        foreground = surface1;
-        frame_color = rosewater;
-        timeout = 0;
-      };
+    Service = {
+      Type = "dbus";
+      BusName = "org.freedesktop.Notifications";
+      ExecStart = "${pkgs.dunst}/bin/dunst -config ${config.xdg.configHome}/dunst/dunstrc";
     };
   };
 }