setup-beam

This action sets up an Erlang/OTP environment for use in a GitHub Actions workflow by:

• installing Erlang/OTP
• optionally, installing Elixir
• optionally, installing rebar3
• optionally, installing hex

Note Currently, this action only supports Actions' ubuntu- runtimes.

Usage

See action.yml for the action's specification.

Note: The Erlang/OTP release version specification is relatively complex. For best results, we recommend specifying exact Erlang/OTP, Elixir versions, and rebar3 versions. However, values like 22.x, or even >22, are also accepted, and we attempt to resolve them according to semantic versioning rules.

Additionally, it is recommended that one specifies Erlang/OTP, Elixir and rebar3 versions using YAML strings, as these examples do, so that numbers like 23.0 don't end up being parsed as 23, which is not equivalent.

For pre-release Elixir versions, such as 1.11.0-rc.0, use the full version specifier (1.11.0-rc.0). Pre-release versions are opt-in, so 1.11.x will not match a pre-release.

Compatibility between Ubuntu and Erlang/OTP

This list presents the known working version combos between Ubuntu and Erlang/OTP.

Ubuntu	Erlang/OTP	Status
ubuntu-16.04	17 - 24	✅
ubuntu-18.04	17 - 24	✅
ubuntu-20.04	20 - 24	✅
windows-2016	23 - 24	✅
windows-2019	23 - 24	✅

Basic example (Elixir)

# create this in .github/workflows/ci.yml
on: push

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: erlef/setup-beam@v1
        with:
          otp-version: '22.2'
          elixir-version: '1.9.4'
      - run: mix deps.get
      - run: mix test

Basic example (rebar3)

# create this in .github/workflows/ci.yml
on: push

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: erlef/setup-beam@v1
        with:
          otp-version: '22.2'
          rebar3-version: '3.14.2'
      - run: rebar3 ct

Matrix example (Elixir)

# create this in .github/workflows/ci.yml
on: push

jobs:
  test:
    runs-on: ubuntu-latest
    name: OTP ${{matrix.otp}} / Elixir ${{matrix.elixir}}
    strategy:
      matrix:
        otp: ['20.3', '21.3', '22.2']
        elixir: ['1.8.2', '1.9.4']
    steps:
      - uses: actions/checkout@v2
      - uses: erlef/setup-beam@v1
        with:
          otp-version: ${{matrix.otp}}
          elixir-version: ${{matrix.elixir}}
      - run: mix deps.get
      - run: mix test

Matrix example (rebar3)

# create this in .github/workflows/ci.yml
on: push

jobs:
  test:
    runs-on: ubuntu-latest
    name: Erlang/OTP ${{matrix.otp}} / rebar3 ${{matrix.rebar3}}
    strategy:
      matrix:
        otp: ['20.3', '21.3', '22.2']
        rebar3: ['3.14.1', '3.14.3']
    steps:
      - uses: actions/checkout@v2
      - uses: erlef/setup-beam@v1
        with:
          otp-version: ${{matrix.otp}}
          rebar3-version: ${{matrix.rebar3}}
      - run: rebar3 ct

Basic example (rebar3 on Windows 2016)

# create this in .github/workflows/ci.yml
on: push

jobs:
  test:
    runs-on: windows-2019
    steps:
      - uses: actions/checkout@v2
      - uses: erlef/setup-beam@v1
        with:
          otp-version: '24.0.2'
          rebar3-version: '3.16.1'
      - run: rebar3 ct

Elixir Problem Matchers

The Elixir Problem Matchers in this repository are adapted from here. See MATCHER_NOTICE for license details.

License

The scripts and documentation in this project are released under the MIT license.

Contributing

Check out this doc.

Current Status

This action is in active development.