![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg552VhPNKsPO4WvA-QN6Rl9B4oAS4vo81VotItgMJCLUbFQnWNCQ2QBnA8THMucj686Jnz4RANl_5rXs90q327-cY2W5F5fBDnKiDM33XhNVWHNNuVAGTmw9kz-B6BHq-kM9D4BLdtrH4/s1600/metapackage+copy.png)
As you explore open-source Mac software, you will eventually have to build for older versions of OS X.
But you will need older OS X SDKs.
The solution? Roundhouse-kick an old, defenseless Xcode installer into a bloody mess, of course! Then you can find all its subinstallers—including the legacy SDKs!