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@john-eevee
Created October 29, 2025 03:28
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Sample Elixir Github CI
# This workflow uses actions that are not certified by GitHub.
# They are provided by a third-party and are governed by
# separate terms of service, privacy policy, and support
# documentation.
name: Elixir CI
on:
push:
branches: ["main"]
pull_request:
branches: ["main"]
permissions:
contents: read
env:
MIX_ENV: test
jobs:
test:
name: Test on Elixir ${{matrix.elixir}} - OTP ${{matrix.otp}}
runs-on: ubuntu-latest
steps:
- name: Cache deps
id: cache-deps
uses: actions/cache@v4
env:
cache-name: cache-elixir-deps
with:
path: deps
key: ${{ runner.os }}-mix-${{ env.cache-name }}-${{ hashFiles('**/mix.lock') }}
restore-keys: |
${{ runner.os }}-mix-${{ env.cache-name }}-
- name: Cache compiled build
id: cache-build
uses: actions/cache@v4
env:
cache-name: cache-compiled-build
with:
path: _build
key: ${{ runner.os }}-mix-${{ env.cache-name }}-${{ hashFiles('**/mix.lock') }}
restore-keys: |
${{ runner.os }}-mix-${{ env.cache-name }}-
${{ runner.os }}-mix-
- name: Checkout code
uses: actions/checkout@v4
- name: Set up Elixir
uses: erlef/setup-beam@v1
with:
elixir-version: "1.19"
otp-version: "28"
- name: Clean to rule out incremental build as a source of flakiness
if: github.run_attempt != '1'
run: |
mix deps.clean --all
mix clean
shell: sh
- name: Run CI
run: mix ci
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