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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. Starting with Xcode 11, Xcode integrates with libSwiftPM to provide support for iOS, watchOS, and tvOS platforms.
Table of Contents
- Getting Started
- System Requirements
Please use this guide for learning package manager basics.
For Quick Help use the
swift package --help command.
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/Contributing.
For detailed documentation on the package manifest API, see PackageDescription API.
For release notes with information about changes between versions, see Release Notes.
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 swift.org, including snapshots for the latest versions built from
master. For installation instructions for downloaded snapshots, please see the Getting Started section of swift.org.
You can verify your installation by typing
swift package --version in a terminal:
$ swift package --version Apple Swift Package Manager - ...
Managing Swift Environments
/usr/bin/swift is just a stub that forwards invocations to the active
toolchain. Thus when you call
swift build it will use the swift defined by
TOOLCHAINS environment variable. This can be used to easily switch
between the default tools, and a development snapshot:
$ xcrun --find swift /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift $ 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
TOOLCHAINS to the
CFBundleIdentifier in an
Choosing a Swift Version
SWIFT_EXEC environment variable specifies the
swiftc executable path used by
swift package. If it is not set, the package manager will try to locate it:
swift-package's parent directory.
- On macOS, by calling
xcrun --find swiftc.
- 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 Resources.md.
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.
There are several ways to contribute to Swift Package Manager. To learn about the policies, best practices that govern contributions to the Swift project and instructions for setting up the development environment please read the Contributor Guide.
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 https://swift.org/LICENSE.txt for license information.
See https://swift.org/CONTRIBUTORS.txt for Swift project authors.
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