actions / actions/runner

(Full) YAML support

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#1,764 5 comments 14 reactions 0 assignees View on GitHub

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Actions Feature enhancement
Dominant language
C#
Stars
6.3k
Forks
1.4k
Avg merge
1d 16h
Merged PRs (30d)
24

Description

Describe the enhancement
Allow use of YAML as the format for GitHub Actions workflows. Any valid document that can be expressed in YAML 1.x (pick a version you want to support) should be accepted if a conformant YAML implementation converts it to a JSON document, and that JSON document is equal to the transformation result of a “GitHub-flavored YAML” document that GitHub Actions does accept.

Code Snippet
not applicable

Additional information
Prompted by a comment that GitHub Actions doesn't yet support YAML, just a private subset.

NOTE: if the feature request has been agreed upon then the assignee will create an ADR. See docs/adrs/README.md

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the issue's YAML 1.x and GitHub-flavored YAML requirements, then read docs/adrs/README.md for the project's ADR process. Define a supported YAML version and determine how conformance and JSON transformation equality will be validated. Done means valid YAML documents meeting the stated equivalence condition are accepted as GitHub Actions workflows.

Written by the indexing model from the issue text.

Assessment

Tech stack
yaml
Domain
ci-cd
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

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