librecad: enable on darwin

pkgs/by-name/li/librecad/package.nix

@@ -43,21 +43,36 @@ stdenv.mkDerivation (finalAttrs: {
   postPatch = ''
     substituteInPlace librecad/src/main/qc_applicationwindow.cpp \
       --replace-warn __DATE__ 0
+
+    substituteInPlace librecad/src/src.pro \
+      --replace-warn '$$[QT_INSTALL_BINS]' '${lib.getDev qt5.qttools}/bin'
+    substituteInPlace librecad/src/muparser.pri \
+      --replace-warn "macx|" ""
   '';
 
   installPhase = ''
     runHook preInstall
 
-    install -Dm555 -t $out/bin                unix/{librecad,ttf2lff}
-    install -Dm444 -t $out/share/applications desktop/librecad.desktop
-    install -Dm644 -t $out/share/pixmaps      librecad/res/main/librecad.png
-    install -Dm444 desktop/librecad.sharedmimeinfo $out/share/mime/packages/librecad.xml
-    install -Dm444 desktop/graphics_icons_and_splash/Icon\ LibreCAD/Icon_Librecad.svg \
-      $out/share/icons/hicolor/scalable/apps/librecad.svg
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
+      mkdir -p $out/{Applications,bin}
+      mv LibreCAD.app $out/Applications
+      ln -s $out/Applications/LibreCAD.app/Contents/MacOS/LibreCAD $out/bin/librecad
+      # Prevent wrapping, otherwise plugins will not be loaded
+      chmod -x $out/Applications/LibreCAD.app/Contents/Resources/plugins/*.dylib
+    ''}
 
-    installManPage desktop/librecad.?
+    ${lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
+      install -Dm555 -t $out/bin                unix/{librecad,ttf2lff}
+      install -Dm444 -t $out/share/applications desktop/librecad.desktop
+      install -Dm644 -t $out/share/pixmaps      librecad/res/main/librecad.png
+      install -Dm444 desktop/librecad.sharedmimeinfo $out/share/mime/packages/librecad.xml
+      install -Dm444 desktop/graphics_icons_and_splash/Icon\ LibreCAD/Icon_Librecad.svg \
+        $out/share/icons/hicolor/scalable/apps/librecad.svg
 
-    cp -R unix/resources $out/share/librecad
+      installManPage desktop/librecad.?
+
+      cp -R unix/resources $out/share/librecad
+    ''}
 
     runHook postInstall
   '';
@@ -67,6 +82,7 @@ stdenv.mkDerivation (finalAttrs: {
     homepage = "https://librecad.org";
     license = lib.licenses.gpl2Only;
     maintainers = with lib.maintainers; [ sikmir ];
-    platforms = lib.platforms.linux;
+    platforms = lib.platforms.unix;
+    mainProgram = "librecad";
   };
 })