setup-eldev

Install Eldev in a GitHub Actions workflow. Can be used on Linux, macOS and Windows operating systems — i.e. currently all OSes available on GitHub workflow runners.

Refer to Eldev’s own documentation on how to use the installed tool for continuous integration on GitHub.

Usage

This action has two optional inputs:

bootstrap: whether to bootstrap Eldev right away, can be true, auto (the default) or false. When auto, Eldev will be bootstrapped if Emacs is already provided by a previous workflow step (with typical usage this is the same as true). Bootstrapping explicitly during installation can help to separate potential problems (e.g. due to network failures) from your real testing code and have them in a predictable place.
cache: whether to cache Eldev’s GPAC (global package archive cache) between workflow runs, this is on (true) by default; this speeds up workflow a bit, especially if your project has multiple dependencies.

There is currently one output:

bootstrapped: whether the installed Eldev was bootstrapped by the action (see corresponding input above). But even if not bootstrapped by the action, Eldev will do it automatically on first invocation anyway.

In addition to Eldev, you will need to make sure Emacs of appropriate version is available, preferably before invoking this action. I recommend using Jen-Chieh Shen’s setup-emacs action, which runs on all operating systems, but any other method you prefer can be used just as well.

Usage, including Emacs setup:

    steps:
    ...

    - name: Set up Emacs
      uses: jcs090218/setup-emacs@master
      with:
        version: ...

    - name: Install Eldev
      uses: emacs-eldev/setup-eldev@v1

Full example

An example workflow that tests on different Emacs versions and different OSes:

name: CI

on:
  push:
    paths-ignore: ['**.md', '**.adoc']
  pull_request:
    paths-ignore: ['**.md', '**.adoc']

jobs:
  test:
    runs-on: ${{matrix.os}}
    continue-on-error: ${{matrix.emacs-version == 'snapshot'}}

    strategy:
      matrix:
        os: [ubuntu-latest]
        emacs-version: ['27.1', '27.2', '28.1', '28.2', '29.1', 'snapshot']
        include:
          - os: macos-latest
            emacs-version: '29.1'
          - os: windows-latest
            emacs-version: '29.1'

    steps:
    - name: Set up Emacs
      uses: jcs090218/setup-emacs@master
      with:
        version: ${{matrix.emacs-version}}

    - name: Install Eldev
      uses: emacs-eldev/setup-eldev@v1

    - name: Check out the source code
      uses: actions/checkout@v4

    - name: Test the project
      run: |
        eldev -p -dtT -C test

    - name: Ensure there are no byte-compilation warnings
      run: |
        eldev -dtT -C compile --set all --warnings-as-errors

    - name: Lint the project
      run: |
        eldev -p -dtT -C lint