I ran into some issues setting up a new Swift 4 project from Swift Package Manager. Specifically, my
main.swift file couldn’t import the dependencies I specified in my
Package.swift file. It turns out, you have to import your dependencies in the root
dependencies: section, then refer to them by module name in the
targets() portion of the package.
|// The swift-tools-version declares the minimum version of Swift required to build this package.|
|let package = Package(|
|// Dependencies declare other packages that this package depends on.|
|// .package(url: /* package url */, from: "1.0.0"),|
|.package(url: "https://github.com/kylef/Commander", from: "0.6.0"),|
|// Targets are the basic building blocks of a package. A target can define a module or a test suite.|
|// Targets can depend on other targets in this package, and on products in packages which this package depends on.|
Omitting the declaration in your target means the module won’t be available to your app and your
import statements will generate compiler errors for nonexistent modules.