Note: This is in reverse chronological order, so newer entries are added to the top.
-
In packages that specify resources using a future tools version, the generated resource bundle accessor will import
Foundation.Bundle
for its own implementation only. Clients of such packages therefore no longer silently importFoundation
, preventing inadvertent use of Foundation extensions to standard library APIs, which helps to avoid unexpected code size increases.
-
SwiftPM packages can now use
package
as a new access modifier, allowing accessing symbols in another target / module within the same package without making it public. -
New
swift experimental-sdk
experimental command is now available for managing Swift SDK bundles that follow the format described in SE-0387: "Swift SDKs for Cross-Compilation". -
SwiftPM can now publish to a registry following the publishing spec as defined in SE-0391. SwiftPM also gains support for signed packages. Trust-on-first-use (TOFU) check which includes only fingerprints (e.g., checksums) previously has been extended to include signing identities, and it is enforced for source archives as well as package manifests.
-
Plugin compilation can be influenced by using
-Xbuild-tools-swiftc
arguments in the SwiftPM command line. This is similar to the existing mechanism for influencing the manifest compilation using-Xmanifest
arguments. Manifest compilation will also be influenced by-Xbuild-tools-swiftc
, but only if no other-Xmanifest
arguments are provided. Using-Xmanifest
will show a deprecation message.-Xmanifest
will be removed in the future. -
Support for building plugin dependencies for the host when cross-compiling.
-
Basic support for a new
.embedInCode
resource rule which allows embedding the contents of the resource into the executable code by generating a byte array, e.g.struct PackageResources { static let best_txt: [UInt8] = [104,101,108,108,111,32,119,111,114,108,100,10] }
-
Package creation using
package init
now also supports the build tool plugin and command plugin types. -
Added a new
allowNetworkConnections(scope:reason:)
for giving a command plugin permissions to access the network. Permissions can be scoped to Unix domain sockets in general or specifically for Docker, as well as local or remote IP connections which can be limited by port. For non-interactive use cases, there is also a--allow-network-connections
commandline flag to allow network connections for a particular scope. -
Remove the
system-module
andmanifest
templates and clean up the remainingempty
,library
, andexecutable
templates so they include the minimum information needed to get started, with links to documentation in the generated library, executable, and test content. -
Add a new
CompilerPluginSupport
module which contains the definition for macro targets. Macro targets allow authoring and distribution of custom Swift macros such as expression macros. -
Add new build setting in the package manifest that enables Swift/C++ Interoperability for a given Swift target.
.interoperabilityMode(.Cxx, version: "swift-5.9")
-
When a package contains a single target, sources may be distributed anywhere within the
./Sources
directory. If sources are placed in a subdirectory under./Sources/<target>
, or there is more than one target, the existing expectation for sources apply. -
Build tool plugins can be used with C-family targets
-
Add
visionOS
as a platform alongsideiOS
and other platforms
-
SwiftPM targets can now specify the upcoming language features they require.
Package.swift
manifest syntax has been expanded with an API to include settingenableUpcomingFeature
andenableExperimentalFeature
flags at the target level, as specified by SE-0362. -
SwiftPM now supports token authentication when interacting with a package registry. The
swift package-registry
command has two new subcommandslogin
andlogout
as defined in SE-0378 for adding/removing registry credentials. -
SwiftPM now allows exposing an executable product that consists solely of a binary target that is backed by an artifact bundle. This allow vending binary executables as their own separate package, independently of the plugins that are using them.
-
Improved handling of offline behavior when a cached version of a dependency exists on disk. SwiftPM will check for network availability status to determine if it should attempt to update a checked version of a dependency, and when offline will use the cached version without an update.
-
In packages using tools version 5.8 or later, Foundation is no longer implicitly imported into package manifests. If Foundation APIs are used, the module needs to be imported explicitly.
-
Added new
--emit-extension-block-symbols
and--omit-extension-block-symbols
viaswift package dump-symbol-graph
.--emit-extension-block-symbols
dumps symbol graph files that are extension block symbol format. The default behavior does not change. The--omit-extension-block-symbols
flag will be used to explicitly disable the feature once the default behavior has been changed to--emit-extension-block-symbols
in the future. -
New
--pkg-config-path
option onbuild
,test
, andrun
commands has been introduced as an alternative to passingPKG_CONFIG_PATH
environment variable. It allows specifying alternative path to search for.pc
files used bypkg-config
. Use the option multiple times to specify more than one path.
-
SwiftPM can now resolve dependencies from a server compliant with the package registry server API defined in SE-0292.
-
Module aliases can now be defined in the package manifest to disambiguate between modules with the same name originating from different packages.
-
Add a
--disable-testable-imports
flag toswift test
with which tests are built without the testability feature (import @testable
disabled). -
Update to manifest API to make it impossible to create an invalid build settings condition.
-
Enable linker dead stripping for all platforms. This can be disabled with
--disable-dead-strip
-
Update to manifest API to make it impossible to create an invalid target dependency condition.
-
Package plugins of the type
buildTool
can now be declared in packages that specify a tools version of 5.6 or later, and can be invoked using theswift build
command. -
Package plugins of the type
command
can now be declared in packages that specify a tools version of 5.6 or later, and can be invoked using theswift package
subcommand. -
Semantic version dependencies can now be resolved against Git tag names that contain only major and minor version identifiers. A tag with the form
X.Y
will be treated asX.Y.0
. This improves compatibility with existing repositories. -
Both parsing and comparison of semantic versions now strictly follow the Semantic Versioning 2.0.0 specification.
The parsing logic now treats the first "-" in a version string as the delimiter between the version core and the pre-release identifiers, only if there is no preceding "+". Otherwise, it's treated as part of a build metadata identifier.
The comparison logic now ignores build metadata identifiers, and treats 2 semantic versions as equal if and only if they're equal in their major, minor, patch versions and pre-release identifiers.
-
Soft deprecate
.package(name:, url:)
dependency syntax in favor of.package(url:)
, given that an explicitname
attribute is no longer needed for target dependencies lookup. -
Adding a dependency requirement can now be done with the convenience initializer
.package(url: String, exact: Version)
. -
Dependency requirement enum calling convention is deprecated in favour of labeled argument:
.package(url: String, .branch(String))
->.package(url: String, branch: String)
.package(url: String, .revision(String))
->.package(url: String, revision: String)
.package(url: String, .exact(Version))
->.package(url: String, exact: Version)
-
Introduce a second version of
Package.resolved
file format which more accurately captures package identity. -
To increase the security of packages, SwiftPM performs trust on first use (TOFU) validation. The fingerprint of a package is now being recorded when the package is first downloaded from a Git repository or package registry. Subsequent downloads must have fingerpints matching previous recorded values, otherwise it would result in build warnings or failures depending on settings.
-
Location of configuration files (including mirror file) have changed to accomodate new features that require more robust configuration directories structure, such as SE-0292:
<project>/.swiftpm/config
(mirrors file) was moved to<project>/.swiftpm/configuration/mirrors.json
. SwiftPM 5.6 will automatically copy the file from the old location to the new one and emit a warning to prompt the user to delete the file from the old location.~/.swiftpm/config/collections.json
(collections file) was moved to~/.swiftpm/configuration/collections.json
. SwiftPM 5.6 will automatically copy the file from the old location to the new one and emit a warning to prompt the user to delete the file from the old location.
-
In a package that specifies a minimum tools version of 5.5,
@main
can now be used in a single-source file executable as long as the name of the source file isn'tmain.swift
. To work around special compiler semantics with single-file modules, SwiftPM now passes-parse-as-library
when compiling an executable module that contains a single Swift source file whose name is notmain.swift
. -
Adding a dependency requirement can now be done with the convenience initializer
.package(url: String, revision: String)
. -
Adding a dependency requirement can now be done with the convenience initializer
.package(url: String, branch: String)
. -
A more intuitive
.product(name:, package:)
target dependency syntax is now accepted, wherepackage
is the package identifier as defined by the package URL. -
Test targets can now link against executable targets as if they were libraries, so that they can test any data structures or algorithms in them. All the code in the executable except for the main entry point itself is available to the unit test. Separate executables are still linked, and can be tested as a subprocess in the same way as before. This feature is available to tests defined in packages that have a tools version of
5.5
or newer.
-
-
Improvements
Package
manifests can now have any combination of leading whitespace characters. This allows more flexibility in formatting the manifests.SR-13566 The Swift tools version specification in each manifest file now accepts any combination of horizontal whitespace characters surrounding
swift-tools-version
, if and only if the specified version ≥5.4
. For example,//swift-tools-version: 5.4
and// swift-tools-version: 5.4
are valid.All Unicode line terminators are now recognized in
Package
manifests. This ensures correctness in parsing manifests that are edited and/or built on many non-Unix-like platforms that use ASCII or Unicode encodings. -
API Removal
ToolsVersionLoader.Error.malformedToolsVersion(specifier: String, currentToolsVersion: ToolsVersion)
is replaced byToolsVersionLoader.Error.malformedToolsVersionSpecification(_ malformation: ToolsVersionSpecificationMalformation)
.ToolsVersionLoader.split(_ bytes: ByteString) -> (versionSpecifier: String?, rest: [UInt8])
andToolsVersionLoader.regex
are together replaced byToolsVersionLoader.split(_ manifest: String) -> ManifestComponents
. -
Source Breakages for Swift Packages
The package manager now throws an error if a manifest file contains invalid UTF-8 byte sequences.
-
-
The
swiftLanguageVersions
property no longer takes its Swift language versions via a freeform Integer array; instead it should be passed as a newSwiftVersion
enum array. -
The
Package
manifest now accepts a new type of target,systemLibrary
. This deprecates "system-module packages" which are now to be included in the packages that require system-installed dependencies. -
Packages can now specify a dependency as
package(path: String)
to point to a path on the local filesystem which hosts a package. This will enable interconnected projects to be edited in parallel. -
The
generate-xcodeproj
has a new--watch
option to automatically regenerate the Xcode project if changes are detected. This uses thewatchman
tool to detect filesystem changes. -
Scheme generation has been improved:
- One scheme containing all regular and test targets of the root package.
- One scheme per executable target containing the test targets whose dependencies intersect with the dependencies of the exectuable target.
-
SR-6978 Packages which mix versions of the form
vX.X.X
withY.Y.Y
will now be parsed and ordered numerically. -
#1489 A simpler progress bar is now generated for "dumb" terminals.
-
#1485 Support has been added to automatically generate the
LinuxMain
files for testing on Linux systems. On a macOS system, runswift test --generate-linuxmain
. -
SR-5918
Package
manifests that include multiple products with the same name will now throw an error.
-
The generated Xcode project creates a dummy target which provides autocompletion for the manifest files. The name of the dummy target is in format:
<PackageName>PackageDescription
. -
--specifier
option forswift test
is now deprecated. Use--filter
instead which supports regex.
-
The package manager now supports writing Swift 3.0 specific tags and manifests, in order to support future evolution of the formats used in both cases while still allowing the Swift 3.0 package manager to continue to function.
-
Test modules now must be named with a
Tests
suffix (e.g.,Foo/Tests/BarTests/BarTests.swift
). This name also defines the name of the Swift module, replacing the oldBarTestSuite
module name. -
It is no longer necessary to run
swift build
before runningswift test
(it will always regenerates the build manifest when necessary). In addition, it now accepts (and requires) the same-Xcc
, etc. options as are used withswift build
. -
The
Package
initializer now requires thename:
parameter.