The size of the package is not a problem, not to mention that most users are automatically updated by connecting to WiFi.

Now this bag is very big, only temporary. I heard that after iOS9 comes out, the system will bring its own Swift-related libraries, so there is no need to put these libraries in the package.

Previously, I had been entangled that Xcode plug-in did not format Swift code, so I simply didn't write Swift in the project, but recently I found that AppCode had a negative effect on Swift.