![]() ![]() The last bit that you might have noticed is the option -enable-test-discovery. The additional options listed are to open up specific security mechanisms otherwise locked down within a container – in this case, it’s enabling the ptrace system call, which is critical to allowing swift to run an integrated REPL or use the LLDB debugger when run within a container. The container declaration defines a docker contain that’s used to run these steps on top of that base linux image, in this case the swift:5.2 image. In this case, it’s using Ubuntu 18.04 (the latest supported by GitHub as I’m writing this post) – which has a corresponding README of everything that includes at. The last segment of this CI declaration is the version that builds the swift package on Linux. īy selecting the version of Xcode with the environment variable declaration, this also implies the version of swift that’s being used, swift version 5.2 in this case. The VM image has an impressive array of commonly used tools, libraries, and languages pre-installed – and that’s maintained publicly in a list at. The GitHub actions runners have been maintained impressively well over the past year, and even beta releases of Xcode are frequently available within weeks of when they are released. The alternative way to do this is by explicitly selecting the version of Xcode with another command xcode-select. The environment variable DEVELOPER_DIR is being defined here, which Xcode uses as a means to indicate which version of Xcode to use when multiple are installed. The second step is simply invoking swift test, just like you might on your own laptop with macOS installed. GitHub’s mechanism allows anyone to host their own actions, and the marketplace is the place to find them. Marketplace gets quotes because I think marketplace is poor name choice – you’re not required to buy anything, which I originally thought was the intention. This example shows the common practice for leveraging actions/checkout, a pre-defined action in the GitHub “ Marketplace“. The steps are run linearly, each having to complete without a failure or error response before the next. The badge uses the repository name and the workflow name together in a URL. What I find most useful is that GitHub provides an easy-to-use badge that you can drop into a README file, so that people viewing the rendered markdown will have a quick look as to the current build status. For all practical purposes the name effects nothing, but knowing the name can be helpful. The very first piece is the name of the action: CI. To explain the setup, let’s look at it in pieces. Options: -cap-add=SYS_PTRACE -security-opt seccomp=unconfined -security-opt apparmor=unconfined While there are some complicated corners to using the swift package manager, especially when it comes to integrating existing C or C++ libraries, the basics for how to use it are gloriously simple:ĭEVELOPER_DIR: /Applications/Xcode_11.4.app/Contents/Developer Swiftpm is also the go-to tooling if you want to use the burgeoning server-side swift capabilities. Most interestingly, you can compile swift on other platforms – linux is supported, and other operating systems (Windows, Android, and more) are being worked on by the swift open source community. You can’t build macOS or iOS applications with swiftpm, but you can create command-line executables or compile swift libraries. If you want to build a swift package, then reach for swiftpm. Building swift packages with github actions I’ll leave the whole “setting up fastlane”, dealing with the complexities of signing code, and submitting builds from CI systems to others. I’m going to focus a bit more narrowly in this post – looking at how to leverage swift package manager and xcodebuild, both command line tools for building swift projects or mac and iOS applications respectively. Tools like fastlane do a spectacular job of helping to automate into these services where Apple hasn’t provided a lot of support, or connected the dots. For many people who are making apps, the goal is to build the code, run any unit tests, maybe run some UI or integration tests, sign the resulting elements, and ship the whole out via testflight. Setting up CI for macOS and iOS project has always been a little odd, but doable. When GitHub finally did circle back and make actions available, I was there trying it out and seeing how it worked. I’ve used most of these, predominantly TravisCI because it was available before the rest, and I got started with it. Some great companies stepped into that early gap and provide excellent services: TravisCI, CircleCI, codeship, SemaphoreCI, Bitrise, and many others. It was a long time in coming, and I saw this feature as GitHub’s missing piece. GitHub Actions released in August 2019 – I’ve been trying them out for nearly a full year, using beta access available the adventurous before it was generally available.
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