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Swift Package Manager got a New Feature! Yea! Hurray! πŸ™ŒπŸ‘―πŸΎπŸŽ‰πŸ£πŸŽ‰
But why we needed it? Let's see ...

The Problem

Let's have a look on this folder structure

β”œβ”€β”€ LibA
β”‚   └── A.swift
β”œβ”€β”€ LibB
β”‚   └── B.swift
β”œβ”€β”€ Tools
β”‚   └── Tools.swift

Now we run swift-build and get the follow result:

β”œβ”€β”€ LibA.a
β”œβ”€β”€ LibB.a
β”œβ”€β”€ Tools.a

So, the problem here is that I don't want to generate a target for a Tools folder. I want to exclude it. Let's do that, it've very easy.

Exclude folders

Open Package.swift file and declare exclude folders for your package.

import PackageDescription

let package = Package(
    exclude: ["Tools"]

That's it!πŸŽ‰ Now just clean cached .build folder and build the package again. Not it creates only 2 targets LibA.a and LibB.a

Some rules to remember:

  • You can exclude many folders.
    ["A", "B"]
  • Also you can specify path to a nested folder.
  • The names are case-sensitive.
    ("Tools" != "tools")
import PackageDescription

let package = Package(
    exclude: ["Tools", "someOther", "Lib/code/Old"]

The paths specified in the exclude are relative to the Root folder of the package. This means that the example above would exclude these folders:

β”œβ”€β”€ Tools
β”œβ”€β”€ someOther
β”œβ”€β”€ Lib
β”‚   └── code
β”‚       └── Old

To use that feature you need use latest version of a swift-build from master branch.

  • Clone the repo,
  • Build swift-build tool by running ./Utilities/bootstrap
  • Opne .build/debug folder
  • Run it - ./swift-build --chdir PackagePathToBuild
    Example: ./swift-build --chdir /Users/kostiantyn/HelloSPM