When downloading snapshots from Swift.org - Download Swift the installers differ every now and then.
The installer for org.swift.3020180330a let me install "For this user only" and hence the toolchain ended up in ~/Library/Developer/Toolchains/ while the installer for org.swift.4220180331a didn't even give me that choice and asked for my admin password right away. Therefore the org.swift.4220180331a toolchain now resides in /Library/Developer/Toolchains
Could this be fixed, so that all toolchains can be installed without admin privileges?