   :safe #'stringp)
 
 (flycheck-def-option-var flycheck-swift3-xcrun-toolchain nil swift
-  "Specifies which toolchain to use to perform the lookup.
+  "Specify which toolchain to use to perform the lookup.
 
 When non-nil, set the toolchain identifier or name to use to
 perform the lookup, via `--toolchain'.

  :safe #'stringp)

(flycheck-def-option-var flycheck-swift3-sdk-path nil swift
  "Specifies which SDK to compile against.

When non-nil, set the SDK path to compile against, via `-sdk'."
  :type '(directory :tag "SDK path")

(require 'flycheck)

(flycheck-def-option-var flycheck-swift3-xcrun-sdk nil swift
  "Specify which SDK to search for tools.

When non-nil, set the SDK name to find the tools, via `--sdk'.
The option is available only on macOS.
