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The Package Manager for the Swift Programming Language

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Swift Package Manager Project

The Swift Package Manager is a tool for managing distribution of source code, aimed at making it easy to share your code and reuse others’ code. The tool directly addresses the challenges of compiling and linking Swift packages, managing dependencies, versioning, and supporting flexible distribution and collaboration models.

We’ve designed the system to make it easy to share packages on services like GitHub, but packages are also great for private personal development, sharing code within a team, or at any other granularity.

Swift Package Manager includes a build system that can build for macOS and Linux. Xcode 11 integrates with libSwiftPM to provide support for iOS, watchOS, and tvOS platforms.

The SourceKit-LSP project leverages libSwiftPM and provides Language Server Protocol implementation for editors that support LSP.

Table of Contents

Getting Started

Please use this guide for learning package manager basics.


For Quick Help use the

swift package --help


For extensive documentation on using Swift Package Manager, creating packages, and more, see Documentation.

For additional documentation on developing the Swift Package Manager itself, see Documentation/Development.

For detailed documentation on the package manifest API, see PackageDescription API.

System Requirements

The package manager’s system requirements are the same as those for Swift with the caveat that the package manager requires Git at runtime as well as build-time.


The Swift Package Manager is included in Xcode 8.0 and all subsequent releases.

The package manager is also available for other platforms as part of all Snapshots available at, including snapshots for the latest versions built from


. For installation instructions for downloaded snapshots, please see the Getting Started section of

You can verify your installation by typing

swift package --version

in a terminal:

$ swift package --version Apple Swift Package Manager - ...

Managing Swift Environments

On macOS


is just a stub that forwards invocations to the active toolchain. Thus when you call

swift build

it will use the swift defined by your


environment variable. This can be used to easily switch between the default tools, and a development snapshot:

$ xcrun --find swift /Applications/ $ swift --version Apple Swift version 3.0 $ export TOOLCHAINS=swift $ xcrun --find swift /Library/Developer/Toolchains/swift-latest.xctoolchain/usr/bin/swift $ swift --version Swift version 3.0-dev

To use a specific toolchain you can set


to the


in an


’s Info.plist.

Choosing a Swift Version



environment variable specifies the


executable path used by

swift package

. If it is not set, the package manager will try to locate it:

  1. In
    's parent directory.
  2. On macOS, by calling
    xcrun --find swiftc
  3. By searching the PATH.


If you have any trouble with the package manager, help is available. We recommend:

When adding a bug to the tracker you should follow the bug reporting guidelines, they can be found in

If you’re not comfortable sharing your question with the list, contact details for the code owners can be found in CODEOWNERS; however, the mailing list is usually the best place to go for help.


To learn about the policies and best practices that govern contributions to the Swift project, please read the Contributor Guide.

If you are interested in contributing, please read the Community Proposal, which provides some context for decisions made in the current implementation and offers direction for the development of future features.

Instructions for setting up the development environment are available here.

The Swift package manager uses llbuild as the underlying build system for compiling source files. It is also open source and part of the Swift project.


Copyright 2015 - 2020 Apple Inc. and the Swift project authors. Licensed under Apache License v2.0 with Runtime Library Exception.

See for license information.

See for Swift project authors.

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