Use Xcode to run Swift CLI, file regex included

Swift.sublime-build

{
    "selector": "source.swift",
    "shell_cmd": "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift \"${file}\"",
    "file_regex": "^(.+\\.swift):([0-9]+):?([0-9]+)?:? (?:error|warning|note): (.*)$"
}