waybar: add module

PR #1329

tests/modules/programs/waybar/settings-complex.nix

@@ -0,0 +1,59 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  package = pkgs.writeScriptBin "dummy-waybar" "" // { outPath = "@waybar@"; };
+in {
+  config = {
+    programs.waybar = {
+      inherit package;
+      enable = true;
+      settings = [{
+        layer = "top";
+        position = "top";
+        height = 30;
+        output = [ "DP-1" ];
+        modules-left = [ "sway/workspaces" "sway/mode" "custom/my-module" ];
+        modules-center = [ "sway/window" ];
+        modules-right = [
+          "idle_inhibitor"
+          "pulseaudio"
+          "network"
+          "cpu"
+          "memory"
+          "backlight"
+          "tray"
+          "battery"
+          "clock"
+        ];
+
+        modules = {
+          "sway/workspaces" = {
+            disable-scroll = true;
+            all-outputs = true;
+          };
+          "sway/mode" = { tooltip = false; };
+          "sway/window" = { max-length = 120; };
+          "idle_inhibitor" = { format = "{icon}"; };
+          "custom/my-module" = {
+            format = "hello from {}";
+            exec = let
+              dummyScript =
+                pkgs.writeShellScriptBin "dummy" "echo within waybar" // {
+                  outPath = "@dummy@";
+                };
+            in "${dummyScript}/bin/dummy";
+          };
+        };
+      }];
+    };
+
+    nmt.script = ''
+      assertPathNotExists home-files/.config/waybar/style.css
+      assertFileContent \
+        home-files/.config/waybar/config \
+        ${./settings-complex-expected.json}
+    '';
+  };
+}