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deploying-go-sdk-bundles

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Builds, packs, and deploys compiled Airflow Go SDK bundles so the ExecutableCoordinator can run them. Use when the user wants to compile a Go task bundle, asks about `go build`, `go tool airflow-go-pack`, the AFBNDL01 self-contained executable bundle, packing or inspecting a bundle, placing it under `executables_root`, cross-compiling a bundle for workers, `go-sdk` module versioning/tags/pseudo-versions, or getting the bundle onto an Airflow worker (Docker, Kubernetes, or Astro). For the task code see authoring-go-sdk-tasks; for the shared coordinator settings see configuring-airflow-language-sdks.

skills/deploying-go-sdk-bundles/SKILL.md

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Nov 2, 2026
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Apache-2.0

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# 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.

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## 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):
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