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.