dark-mode-notify: init at 2022-07-18

`dark-mode-notify` is a small too that calls a binary whenever dark
mode status changes in macOS.

pkgs/os-specific/darwin/dark-mode-notify/default.nix

@@ -0,0 +1,40 @@
+{ lib
+, fetchFromGitHub
+, stdenv
+, swift
+, swiftpm
+, darwin
+}:
+
+stdenv.mkDerivation (final: {
+  pname = "dark-mode-notify";
+  version = "unstable-2022-07-18";
+
+  src = fetchFromGitHub {
+    owner = "bouk";
+    repo = "dark-mode-notify";
+    rev = "4d7fe211f81c5b67402fad4bed44995344a260d1";
+    hash = "sha256-LsAQ5v5jgJw7KsJnQ3Mh6+LNj1EMHICMoD5WzF3hRmU=";
+  };
+
+  nativeBuildInputs = [
+    swift
+    swiftpm
+  ];
+
+  buildInputs = with darwin.apple_sdk.frameworks; [
+    Foundation
+    Cocoa
+  ];
+
+  makeFlags = [ "prefix=$(out)" ];
+
+  meta = {
+    description = "Run a script whenever dark mode changes in macOS";
+    homepage = "https://github.com/bouk/dark-mode-notify";
+    # Doesn't build on x86_64 because of some CoreGraphics issue, even with SDK 11.0
+    platforms = [ "aarch64-darwin" ];
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ YorikSar ];
+  };
+})

pkgs/top-level/all-packages.nix

@@ -3584,6 +3584,8 @@ with pkgs;
 
   dcap = callPackage ../tools/networking/dcap { };
 
+  dark-mode-notify = callPackage ../os-specific/darwin/dark-mode-notify { };
+
   deltachat-cursed = callPackage ../applications/networking/instant-messengers/deltachat-cursed { };
 
   delayarchitect = callPackage ../applications/audio/delayarchitect { };