The course asks for a Swift project, but it’s unclear whether to use a library, a command-line program, or an Xcode app.
Fastest safe route: check which Swift toolchain the Mac is using, create the matching Swift Package Manager template, then build and test it. As of October 5, 2026, Swift.org lists the Swift 6.4.x toolchain in its development snapshots, not as a stable release. Keep a course-required stable environment for graded work unless the course specifically asks for a snapshot. Check Swift.org’s macOS toolchain page.
This walkthrough is for students creating their first buildable Swift exercise, including Windows users who need a Mac environment for a course task.
It also helps learners check their toolchain before a version mismatch becomes a distracting debugging problem.
If the existing computer can build and test the required project, there’s no need to move the work elsewhere.
Last updated October 5, 2026. Version status and commands were checked against Swift.org’s macOS installation and package guides, and Apple’s Command Line Tools documentation.
[ SECTION_01 ] Start with the project your course actually requires
A Swift Package is a way to organize Swift source code, describe what a project contains, and build or test that code. Think of it as a small, clearly labeled container for a coding exercise. It is not the same thing as a complete iOS app project. Swift.org explains a package’s main parts in its introduction to Swift packages.
Before opening a terminal, look at the course instructions and identify the expected result:
- Reusable library: the exercise creates code that another Swift project could use.
- Command-line program: the exercise produces a program that can be run from a terminal.
- Xcode app project: the exercise involves an app interface, an Apple platform target, or other Xcode project features.
The first two are appropriate package exercises. If the course specifically asks for an iOS app project, don’t assume that creating a package completes the assignment. It may still be useful for practicing Swift code, but the project type and submission requirements are different.
Which project type fits a first package exercise? Choose a library if the lesson focuses on reusable functions or types. Choose an executable if the instructions expect a program you can launch and see produce output. Choose an Xcode app project only when the course requires an app, platform features, or Xcode-specific work.
This distinction is an easy way to avoid a common detour: following a package tutorial carefully, then discovering that the instructor wanted an app project. The package template controls the starter files and the way you verify the exercise; it doesn’t decide what the course will accept.
[ SECTION_02 ] Check the active Swift toolchain
A Swift toolchain is the set of tools your Mac uses to work with Swift. Swift Package Manager, often shortened to SwiftPM, is the part that helps create, build, and test packages. A simple analogy: the toolchain is the workbench, while SwiftPM is the set of labeled steps for handling a package.
Open Terminal on the Mac where the project will live, then run:
swift --version
This prints the Swift version and toolchain information available to that terminal. The Swift command-line guide uses swift --version as the basic way to check the installed compiler. See the Swift.org command-line guide.
Don’t rely only on a version shown in a class slide or saved note. The active terminal is what matters for the commands you run. If a computer has more than one developer toolchain configured, the selected command-line tools can affect which Swift installation is active. Apple documents how to install and use Xcode Command Line Tools; its command-line tools reference is useful when the environment’s selection is unclear.
Use the course’s stated toolchain if the assignment specifies one. If it doesn’t, check what is already available before installing anything. Multiple toolchains add another choice to manage and can make it harder to tell which version built a project.
How can you check the Swift version on a Mac? Run swift --version in the same terminal you plan to use for the project. Compare the result with the course requirement. If the course requires a particular Xcode-provided toolchain, follow the school’s setup instructions rather than installing a second toolchain on your own.
Swift.org’s macOS page currently places Swift 6.4.x under development snapshots and describes snapshots as non-release builds. That status is different from a stable release. A snapshot can be useful for a separate experiment, but it is not a safe replacement for a course’s expected environment unless the instructor asks for it. Check the current Swift toolchain listings.
Here’s a quick comparison before creating anything:
- Use the course’s existing toolchain — best fit for graded work. It minimizes differences between your setup and the instructor’s.
- Use an already configured Swift toolchain — good fit for an independent exercise. Confirm its version in Terminal and keep the project separate from course submissions if versions differ.
- Try a Swift 6.4 development snapshot — experimental fit. Use it for a separate practice folder, not as an unverified change to a stable assignment environment.
[ SECTION_03 ] Generate the package from a matching template
Once the toolchain and project type are clear, create a folder for the exercise and enter it:
mkdir FirstSwiftPackage
cd FirstSwiftPackage
The folder name is just a local label. Choose one that will still make sense when you come back to the exercise. The cd command changes the terminal’s current location. That matters because SwiftPM creates the package in the folder where you run its initialization command.
For a library exercise, use the library template:
swift package init --type library
For a command-line exercise, use the executable template:
swift package init --type executable
Swift.org’s library project instructions and command-line project guide describe these starter paths. Pick the one that matches the assignment; don’t create both just to see what happens in the same folder.
The template gives the project a starting layout. A library template places reusable source code and test code in their own locations. An executable template supplies a program entry point intended to run as a command-line application. The exact starter files can vary with the toolchain, so treat the generated files on your machine as the source of truth.
A package also has a Package.swift manifest. You can think of this as the project’s contents list: it describes the package and its targets. A target is a named part of the package, such as its library, executable, or tests. The Swift package documentation explains how the manifest and package structure fit together.
At this stage, don’t add dependencies or rewrite the manifest just to make the project feel more complete. The goal is to create one small package that matches the lesson and can pass a basic check.
[ SECTION_04 ] Edit one generated source file
Open the generated project folder in the editor or terminal workflow used by the course. Confirm the folder path before typing. When working on a remote Mac, it’s especially easy to edit a local copy by mistake if the remote and local folders have similar names.
Change only the starter source file that belongs to the template. For a library, make a small change to a function or type in the generated library source. For an executable, change the example’s output or add a simple statement that makes the program’s behavior easy to recognize. Keep the first change small enough that a typo is easy to locate.
Save the file, then return to the terminal in the package directory. A package’s source code is the material Swift builds; the manifest tells the package tools how the pieces fit. Those roles are enough to understand for a first exercise. There’s no need to edit complicated configuration before you can build the starter project.
If the result doesn’t change when the program runs, check the edited file and folder first. A successful save in the wrong project copy can look like a Swift problem, even though the active package still contains the original code.
How does Swift Package Manager generate a Swift project? It initializes the current folder from a selected package template. The library and executable forms start with different source layouts, so run the matching swift package init command from the intended project directory. The official command-line and library guides describe these starter paths.
[ SECTION_05 ] Build, run, and test the result
A build checks whether the package’s source can be compiled. From the package directory, run:
swift build
Swift.org’s package guides use the Swift command-line tools to build these projects. If the command completes without an error, the package built successfully for the current environment. That doesn’t yet prove that the program’s behavior is correct; it confirms that the build step completed.
For an executable package, run:
swift run
Check the terminal output against the small change made to the starter source. The purpose of this first run is simple: verify that the generated command-line project starts and that the edited code affects the result.
For either package type, run the tests with:
swift test
SwiftPM runs the tests included in the package. A library template is usually the more direct fit when the assignment centers on reusable code and its tests. An executable template is the more direct fit when the assignment expects visible terminal output. Swift.org’s testing guide explains how Swift packages can organize and run tests.
What should you do if package tests fail? Start with the basics: check that Terminal is in the package directory, inspect the active version with swift --version, and compare it with the course requirement. Then read the first error message and identify whether it points to a source file, test, or package setup. A failed test is not automatically evidence that the Swift version is wrong.
Use this order when diagnosing a problem:
- Confirm that the terminal is in the folder containing
Package.swift. - Confirm that the edited source file is inside that same project.
- Check the Swift version used by the active terminal.
- Read the first relevant error before changing files or installing tools.
- Rerun the command that failed after making one focused correction.
Swift.org’s testing instructions and package introduction provide the reference for package and test behavior. If a course uses additional instructions, follow those for its expected output and submission format.
[ SECTION_06 ] Save the exercise and choose the next environment
Before submitting, make sure the edited source and any required tests are saved in the correct project folder. Keep Package.swift and the template files required by the course. Don’t remove generated files simply because their purpose isn’t clear yet. If the course specifies a submission format, use that format rather than assuming the package folder alone is enough.
Use this checklist before calling the exercise complete:
- [ ] The project type matches the lesson: library, executable, or Xcode app.
- [ ]
swift --versionmatches the toolchain expected for the task. - [ ] The source change is saved in the package folder being built.
- [ ]
swift buildcompletes successfully. - [ ] The executable runs with the expected output, or the library tests pass.
- [ ] The files required for submission remain in the project.
When do you need Xcode instead of a Swift Package? Use the package for a course exercise that asks for a reusable library or command-line program. Use the course’s Xcode setup when it asks for a full app project or relies on Xcode-specific workflows. Apple’s Command Line Tools installation notes explain the command-line tools environment, but they don’t make a package equivalent to a complete app project.
If the current computer can run the required Swift commands, continue with the course there. A Windows computer or restricted school machine may not provide the macOS or Xcode environment a particular assignment needs. Local workarounds can also leave you without the exact tools the course expects, while school-device restrictions may prevent installing development software. A remote Mac adds a separate machine to access and manage, so it isn’t automatically the right choice for every lesson; for regular, sustained work, owning a compatible Mac may make more sense.
If the task specifically requires macOS or Xcode and the current computer can’t provide it, check whether a remote Mac fits the assignment before changing your setup. The NOVAKVM remote Mac options can help you review the available environment. If a temporary Mac environment is a better fit than buying hardware for a short course task, review the NOVAKVM Mac mini options and confirm that the access method and environment meet the course requirements.