Swiftpack.co - Package - AlwaysRightInstitute/Shell


Swift5 macOS

Module exposing Unix command line tools as Swift 5 @dynamicCallable functions

A few words of warning: This is intended as a demo. It should work just fine, but in the name of error handling and proper Swift beauty, you might want to approach forking processes differently 🤓 (BTW: PRs are welcome!)

Part of this blog post: @dynamicCallable: Unix Tools as Swift Functions.

Sample tool

The regular Swift Package Manager setup process:

mkdir ShellConsumerTest && cd ShellConsumerTest
swift package init --type executable

Sample main.swift:

import Shell


Sample Package.swift:

// swift-tools-version:5.0

import PackageDescription

let package = Package(
    name: "ShellConsumerTest",
    dependencies: [
        .package(url: "https://github.com/AlwaysRightInstitute/Shell.git",
                 from: "0.1.0"),
    targets: [
        .target(name: "ShellConsumerTest", dependencies: [ "Shell" ]),

Remember to add the dependency in two places. WET is best!

swift run and swift test patch the $PATH to just /usr/bin. You may want to run the binary directly to make lookup work properly.

Install a Swift 5 Snapshot

For this to work, you need to have Swift 5 installed. As of today Swift 5 hasn't been released yet, but Apple is providing prebuilt Swift 5 development toolchains over at: swift.org. Just install the toolchain, and select it in the Xcode "Toolchains" menu.

If you are living on the commandline, make sure to call export TOOLCHAINS=swift to get access to the selected version.



Brought to you by ZeeZide. We like feedback, GitHub stars, cool contract work, presumably any form of praise you can think of.


Stars: 80
Help us keep the lights on