THIS PROJECT HAS BEEN DEPRECATED IN FAVOR OF setup-dlang WHICH OFFERS THE SAME FUNCTIONALITY PLUS SUPPORT FOR LDC AND AUTOMATIC PRE-RELEASES. (Marketplace link)

old readme for reference, this project only supports setting up dmd and not ldc and doesn't setup dub in older versions. Use the above mentioned project instead for this.

Automatically downloads and installs DMD on Windows, Linux and OSX in a GitHub Action.

Simply add setup-dmd with a given dmd-version to install dmd somewhere into your virtual environment and automatically add it to the PATH environment variable.

The installed path will be available as environment variable in D_HOME.

Valid DMD version string examples are:

• 2.088.0
• 2.088.0-beta.2
• 2.064 (this syntax only for <= 2.064)
• master

Use master to download the nightly build from the D homepage.

You can check for release numbers and pre-releases in http://downloads.dlang.org/pre-releases/2.x/

Basic:

steps:
- uses: actions/checkout@v1
- uses: WebFreak001/setup-dmd@v1
  with:
    dmd-version: 2.088.0
- name: Test
  run: dub test

Matrix Testing:

jobs:
  test:
    runs-on: ${{ matrix.os }}

    strategy:
      matrix:
        dmd_version: [2.088.0, 2.087.1, 2.087.0, 2.086.1, 2.085.1, 2.084.1, 2.083.1]
        os: [ubuntu-latest, windows-latest, macOS-latest]

    steps:
    - uses: actions/checkout@v1
    - name: Install DMD ${{ matrix.dmd_version }}
      uses: WebFreak001/setup-dmd@v1
      with:
        dmd-version: ${{ matrix.dmd_version }}
    - name: Test
      run: dub test