flameshot: fix build on Darwin

pkgs/by-name/fl/flameshot/package.nix

@@ -1,16 +1,28 @@
-{ libsForQt5
-, stdenv
-, lib
-, fetchFromGitHub
-, cmake
-, nix-update-script
-, fetchpatch
-, grim
-, makeBinaryWrapper
-, enableWlrSupport ? false
+{
+  stdenv,
+  lib,
+  overrideSDK,
+  darwin,
+  fetchFromGitHub,
+  fetchpatch,
+  cmake,
+  imagemagick,
+  libicns,
+  libsForQt5,
+  grim,
+  makeBinaryWrapper,
+  nix-update-script,
+  enableWlrSupport ? false,
+  enableMonochromeIcon ? false,
 }:
 
-stdenv.mkDerivation {
+assert stdenv.isDarwin -> (!enableWlrSupport);
+
+let
+  stdenv' = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+in
+
+stdenv'.mkDerivation {
   pname = "flameshot";
   # wlr screenshotting is currently only available on unstable version (>12.1.0)
   version = "12.1.0-unstable-2024-08-02";
@@ -32,43 +44,88 @@ stdenv.mkDerivation {
     })
   ];
 
-  passthru = {
-    updateScript = nix-update-script {
-      extraArgs = [ "--version=branch" ];
-    };
-  };
+  cmakeFlags =
+    [
+      (lib.cmakeBool "DISABLE_UPDATE_CHECKER" true)
+      (lib.cmakeBool "USE_MONOCHROME_ICON" enableMonochromeIcon)
+    ]
+    ++ lib.optionals stdenv.isLinux [
+      (lib.cmakeBool "USE_WAYLAND_CLIPBOARD" true)
+      (lib.cmakeBool "USE_WAYLAND_GRIM" enableWlrSupport)
+    ]
+    ++ lib.optionals stdenv.isDarwin [
+      (lib.cmakeFeature "Qt5_DIR" "${libsForQt5.qtbase.dev}/lib/cmake/Qt5")
+    ];
 
-  cmakeFlags = [
-    (lib.cmakeBool "USE_WAYLAND_CLIPBOARD" true)
-    (lib.cmakeBool "USE_WAYLAND_GRIM" enableWlrSupport)
-  ];
-
-  nativeBuildInputs = [
-    cmake
-    libsForQt5.qttools
-    libsForQt5.qtsvg
-    libsForQt5.wrapQtAppsHook
-    makeBinaryWrapper
-  ];
+  nativeBuildInputs =
+    [
+      cmake
+      libsForQt5.qttools
+      libsForQt5.qtsvg
+      libsForQt5.wrapQtAppsHook
+      makeBinaryWrapper
+    ]
+    ++ lib.optionals stdenv.isDarwin [
+      imagemagick
+      libicns
+    ];
 
   buildInputs = [
     libsForQt5.qtbase
     libsForQt5.kguiaddons
   ];
 
-  dontWrapQtApps = true;
+  postPatch = lib.optionalString stdenv.isDarwin ''
+    # Fix icns generation running concurrently with png generation
+    sed -E -i '/"iconutil -o/i\
+        )\
+        execute_process(\
+    ' src/CMakeLists.txt
+
+    # Replace unavailable commands
+    sed -E -i \
+        -e 's/"sips -z ([0-9]+) ([0-9]+) +(.+) --out /"magick \3 -resize \1x\2\! /' \
+        -e 's/"iconutil -o (.+) -c icns (.+)"/"png2icns \1 \2\/*{16,32,128,256,512}.png"/' \
+        src/CMakeLists.txt
+  '';
+
+  postInstall = lib.optionalString stdenv.isDarwin ''
+    mkdir $out/Applications
+    mv $out/bin/flameshot.app $out/Applications
+
+    ln -s $out/Applications/flameshot.app/Contents/MacOS/flameshot $out/bin/flameshot
 
-  postFixup = ''
-    wrapProgram $out/bin/flameshot \
-      ${lib.optionalString enableWlrSupport "--prefix PATH : ${lib.makeBinPath [ grim ]}"} \
-      ''${qtWrapperArgs[@]}
+    rm -r $out/share/applications
+    rm -r $out/share/dbus*
+    rm -r $out/share/icons
+    rm -r $out/share/metainfo
   '';
 
+  dontWrapQtApps = true;
+
+  postFixup =
+    let
+      binary =
+        if stdenv.isDarwin then "Applications/flameshot.app/Contents/MacOS/flameshot" else "bin/flameshot";
+    in
+    ''
+      wrapProgram $out/${binary} \
+        ${lib.optionalString enableWlrSupport "--prefix PATH : ${lib.makeBinPath [ grim ]}"} \
+        ''${qtWrapperArgs[@]}
+    '';
+
+  passthru = {
+    updateScript = nix-update-script { extraArgs = [ "--version=branch" ]; };
+  };
+
   meta = with lib; {
     description = "Powerful yet simple to use screenshot software";
     homepage = "https://github.com/flameshot-org/flameshot";
     mainProgram = "flameshot";
-    maintainers = with maintainers; [ scode oxalica ];
+    maintainers = with maintainers; [
+      scode
+      oxalica
+    ];
     license = licenses.gpl3Plus;
     platforms = platforms.linux ++ platforms.darwin;
   };