Validate Dependabot Configuration

This action validates that your repository has Dependabot configured for most supported package ecosystems (via dependabot.yml) based on the programming languages used in your repository.

What it does

• Detects programming languages used in your repository
• Maps languages to their corresponding package ecosystems
• Validates that your dependabot.yml includes configurations for all relevant package ecosystems
• Fails if required ecosystems are missing from your Dependabot configuration

Supported Ecosystems

Package Manager	Languages
npm	JavaScript, TypeScript
pip	Python
maven	Java
nuget	C#, F#
bundler	Ruby
composer	PHP
cargo	Rust
gomod	Go
mix	Elixir
gradle	Java, Kotlin

For Dependabot's most up to date list (not necessarily this action), please check the GitHub docs.

Usage

Add this action to your workflow:

name: Validate Dependabot Config
on:
  pull_request:
  push:
    branches: [main]

jobs:
  validate:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Validate Dependabot Configuration
        uses: chrisreddington/[email protected]
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}

Required Inputs

Input	Description	Required	Default
github-token	GitHub token for repository access	No	Defaults to the automatically generated token. You may override this if you require additional permissions beyond the default token.

Example dependabot.yml

Create a .github/dependabot.yml file in your repository with configurations for your package ecosystems:

version: 2
updates:
  - package-ecosystem: 'npm'
    directory: '/'
    schedule:
      interval: 'weekly'

  - package-ecosystem: 'pip'
    directory: '/'
    schedule:
      interval: 'weekly'

Troubleshooting

The action may fail with the following messages:

1. No .github/dependabot.yml file found

   • Create a dependabot.yml file in your .github directory
   • Ensure the file has correct YAML syntax

2. Missing Dependabot configuration for ecosystems: X, Y, Z

   • Add configurations for the listed ecosystems to your dependabot.yml
   • Each ecosystem needs its own update block in the configuration

License

This project is licensed under the MIT License - see the LICENSE file for details.