Mac pkg安装程序分发

Question

I have build a flat package installer (meaning it is just a single pkg file) for Mac. Normally Mac installers are distributed inside a disk image (dmg) file. I know how to create a dmg file containing the pkg file, but I am wondering if this is necessary. Is there are reason why it is better to distribute the installer inside a disk image?

Answer 1

Mac applications are often distributed as DMG, but that was mostly because Mac .app bundles are really a directory tree, not a single file. If you have a single-file .pkg , it is probably fine to distribute as-is.

Note: in earlier versions of OS X this was true of .pkg also, but it has not been the case for some time, .pkg are now single file xar archives.