Error when installing Swift Open Source Xcode Toolchain: You cannot install Swift Open Source Xcode Toolchain in this location

Question

I just downloaded the Swift Open Source Xcode Toolchain as described here.

When following the installation instructions however, the second instruction already fails, which says:

Run the package installer, which will install an Xcode toolchain into /Library/Developer/Toolchains/.

An Xcode toolchain (.xctoolchain) includes a copy of the compiler, lldb, and other related tools needed to provide a cohesive development experience for working in a specific version of Swift.

I am getting the following error when running the package installer:

You cannot install Swift Open Source Xcode Toolchain in this location. The Swift Open Source Xcode Toolchain installer does not allow its software to be installed here.

Update: Someone suggested earlier that the issue might be that I'm not running El Capitan (which is true). I didn't have the opportunity to update my OS in the meantime, can anyone else having the same issue confirm that this might be the reason?

Answer 1

You don't have the requirements met as described on the Swift download page. The error message you are getting is unfortunate.

Install OS X 10.11 (El Capitan) and it'll work.