Deploying Go SDK Bundles

A Go SDK deployment has one artifact: a bundle, a single self-contained native executable that also carries its embedded source and a manifest (the AFBNDL01 format, "the executable is the bundle"). You build and pack it with go, place it where Airflow's ExecutableCoordinator scans, and the Python task runner forks it once per task instance. This skill is platform-neutral: it shows the build, the coordinator wiring, then how to get the bundle onto a worker.

Experimental. The Go SDK is under active development and not production-ready. Everything resolves against the single module github.com/apache/airflow/go-sdk (Go 1.24+).

Order of operations: write the tasks (authoring-go-sdk-tasks) -> build and pack the bundle (this skill) -> place it under executables_root and configure the coordinator -> deploy the matching Python stub DAG.

Build and pack the bundle

The coordinator only recognizes a packed bundle: it scans for the AFBNDL01 trailer and silently skips any file that lacks it, so a plain go build binary is not deployable on its own. Use the packer, shipped as a Go 1.24 tool directive in go.mod (no global install, version pinned per project):