SupportedPlatform

By default, the Swift Package Manager assigns a predefined minimum deployment version for each supported platforms unless you configure supported platforms using the platforms API. This predefined deployment version is the oldest deployment target version that the installed SDK supports for a given platform. One exception to this rule is macOS, for which the minimum deployment target version starts from 10.10. Packages can choose to configure the minimum deployment target version for a platform by using the APIs defined in this struct. The Swift Package Manager emits appropriate errors when an invalid value is provided for supported platforms, such as an empty array, multiple declarations for the same platform, or an invalid version specification.

The Swift Package Manager will emit an error if a dependency is not compatible with the top-level package’s deployment version. The deployment target of a package’s dependencies must be lower than or equal to the top-level package’s deployment target version for a particular platform.