Lineage Baseline

Version updated for https://github.com/Lineage-org/lineage-baseline to version v1.

  • This action is used across all versions by ? repositories.

Go to the GitHub Marketplace to find the latest changes.

Release notes

First release of Lineage Baseline GitHub Action

Lineage provides scalable policy governance and enforcement for organizations. It allows you to define security policies, coding standards and infrastructure rules in a central baseline and automatically propagate them to hundreds of consumer repositories without the maintenance burden.

Key Features

  • Automated Policy Sync: Keep repositories up-to-date with organization standards automatically.
  • Smart Merging: Intelligent 3-way merge logic allows local customizations to coexist with upstream policy updates—no more blind overwrites.
  • Configuration-Driven: Customize policies per repository using a simple .lineage.toml file.
  • Nix-Powered: Uses the Determinate Systems Nix installer for reliable, reproducible and hermetic policy generation.
  • Conflict Handling: Gracefully handles merge conflicts by creating Pull Requests with clear conflict markers instead of failing pipelines.

Usage

Add this action to your workflow to enforce policies:

steps:
  - uses: actions/checkout@v5
  - uses: Lineage-org/lineage-baseline@stable
    with:
      command: check
      # Optional: select specific packs
      packs: editorconfig,license

Documentation