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README.md |
Europa Core packages
About this directory
stdlib/europa/
holds the development version of the Core packages for the upcoming Europa release.
Once Europa is released, stdlib/europa
will become the new stdlib/
What are Dagger core packages?
Dagger core packages are CUE packages released alongside the Dagger engine, to allow developers to access its features.
Dagger Core API: dagger.io/dagger
Development import path: alpha.dagger.io/europa/dagger
The Dagger Core API defines core types and utilities for programming Dagger:
#Plan
: a complete configuration executable bydagger up
#FS
to reference filesystem state#Secret
to (securely) reference external secrets#Service
to reference network service endpoints#Stream
to reference byte streams
Low-level Engine API: dagger.io/dagger/engine
- Development import path (implemented subset):
alpha.dagger.io/europa/dagger/engine
- Development importa pth (full spec):
alpha.dagger.io/dagger/europa/dagger/engine/spec/engine
engine
is a low-level API for accessing the raw capabilities of the Dagger Engine. Most developers should use the Dagger Core API instead (dagger.io/dagger
), but experts and framework developers can target the engine API directly for maximum control.
This API prioritizes robustness, consistency, and feature completeness. It does NOT prioritize developer convenience or leveraging Cue for composition.
In Europa, engine
will deprecate the following implicit API:
- Low-level operations defined in
alpha.dagger.io/dagger/op
- Imperative DSL to assemble Dockerfile-like arrays as Cue arrays
- Convention to embed pipelines in the Cue lattice with the special nested definition
#up
- Convention to reference filesystem state from the Cue lattice with
@dagger(artifact)
- Convention to reference external secrets from the Cue lattice with
@dagger(secret)
- Convention to reference external network endpoints from the Cue lattive with
@dagger(stream)
- Convention that some operations (specifically
op.#Local
) are meant to be generated at runtime rather than authored manually.