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.
// swift-tools-version:4.0 | |
// The swift-tools-version declares the minimum version of Swift required to build this package. | |
import PackageDescription | |
let package = Package( | |
name: "nerdScrape", | |
dependencies: [ | |
// 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: [ | |
// 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. | |
.target( | |
name: "nerdScrape", | |
dependencies: ["Commander"] | |
), | |
] | |
) |
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.