iOSアプリにReflectionライブラリ導入、あるいはSwift Package Manager製のライブラリをiOSアプリに入れる方法

// Retrieves the value of `person.firstName`
let firstName: String = try get("firstName", from: person)

// Sets the value of `person.age`
try set(36, key: "age", for: &person)

sudo gem install xcodeproj

cd path/to/適当な場所
git clone https://github.com/j-channings/swift-package-manager-ios.git
cd swift-package-manager-ios

# デモに入っているscript等を流用したい
cp generate-dependencies-project.rb path/to/TargetProject
cp Package.swift path/to/TargetProject # Swift Package Manager用の依存関係を記述するファイル
cp -r .deps-sources path/to/TargetProject

// swift-tools-version:4.0
// The swift-tools-version declares the minimum version of Swift required to build this package.

import PackageDescription

let package = Package(
    name: "Dependencies",
    products: [
        // Products define the executables and libraries produced by a package, and make them visible to other packages.
        .library(
            name: "Dependencies",
            type: .static,
            targets: ["Dependencies"]),
    ],
    dependencies: [
        // Dependencies declare other packages that this package depends on.
        .package(url: "https://github.com/Zewo/Reflection.git", from: "0.16.0"),
    ],
    targets: [
        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
        // Targets can depend on other targets in this package, and on products in packages which this package depends on.
        .target(
            name: "Dependencies",
            dependencies: ["Reflection"],
            path: ".deps-sources"
        )
    ]
)

cd path/to/TargetProject
ruby generate-dependencies-project.rb # => Dependencies.xcodeproj/ が生成される