OS X changes

electron.js

@@ -155,6 +155,19 @@ const standardIPCReply = (event, channel, data, error) => {
   });
 };
 
+ipcMain.on(Constants.IPC_Check_Dependency_Installed, (event, data) => {
+  try {
+    const exists = fs.lstatSync(data.File).isFile();
+    standardIPCReply(event, Constants.IPC_Check_Dependency_Installed_Reply, {
+      Exists: exists,
+    });
+  } catch (e) {
+    standardIPCReply(event, Constants.IPC_Check_Dependency_Installed_Reply, {
+      Exists: false,
+    }, e);
+  }
+});
+
 ipcMain.on(Constants.IPC_Check_Installed, (event, data) => {
   const dataDirectory = helpers.resolvePath(data.Directory);
   const destination = path.join(dataDirectory, data.Version);
@@ -406,18 +419,37 @@ ipcMain.on(Constants.IPC_Grab_UI_Releases, (event) => {
 });
 
 ipcMain.on(Constants.IPC_Install_Dependency, (event, data) => {
-  helpers
+  if (data.Source.toLowerCase().endsWith('.dmg')) {
+    helpers
+      .executeAsync('hdiutil', ['attach', data.Source])
+      .then(() => {
+        standardIPCReply(event, Constants.IPC_Install_Dependency_Reply, {
+          Source: data.Source,
+          URL: data.URL,
+        });
+      })
+      .catch(error=> {
+        standardIPCReply(event, Constants.IPC_Install_Dependency_Reply, {
+          Source: data.Source,
+          URL: data.URL,
+        }, error);
+      });
+  } else {
+    helpers
     .executeAndWait(data.Source)
-    .then(()=> {
+    .then(() => {
       standardIPCReply(event, Constants.IPC_Install_Dependency_Reply, {
         Source: data.Source,
+        URL: data.URL,
       });
     })
     .catch(error => {
       standardIPCReply(event, Constants.IPC_Install_Dependency_Reply, {
         Source: data.Source,
+        URL: data.URL,
       }, error);
     });
+  }
 });
 
 ipcMain.on(Constants.IPC_Install_Upgrade, (event, data) => {