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The physics of build systems

Why build graphs, incremental builds, remote caching, and remote execution decide whether a build feels fast.

The build system you already have

Underneath the surface syntax, every build system is the same graph. After years building remote caching for them, we got curious about what actually makes one tick, and what a build system would look like if you designed it today for coding harnesses.

L10N.md: localization built like we ship software

Existing localization tools take content out of the repository and translate it in environments where changes can't be validated. We tried Crowdin and Weblate, none of them felt right. So we built our own system on top of LLMs, with the repository as the source of truth and a lockfile to keep things incremental.

Codex cut Mastodon iOS clean builds 80%

We gave Codex the Mastodon iOS client and asked it to migrate the project to Tuist generated projects, enable caching, and benchmark the results. Here is what happened.

Teaching AI to Read Xcode Builds

From debugging build issues to building agent-friendly build observability. Exploring how structured build data could transform how AI agents understand and optimize Xcode builds.

Debugging the communication between Xcode and XCBBuildService

Learn how to debug the communication between Xcode and XCBBuildService with XCBLoggingBuildService.