From 161d84e98983d6ffc84009e00380ab4aa597ef04 Mon Sep 17 00:00:00 2001
From: Devin Baca <devob88@gmail.com>
Date: Mon, 13 Jul 2026 22:23:03 -0700
Subject: [PATCH] Migrate CI from CircleCI to GitHub Actions

Public repo can't use the private smartrent/github-actions reusable
workflows, so this uses erlef/setup-beam and actions/cache directly,
mirroring the existing CircleCI Elixir/OTP matrix.
---
 .circleci/config.yml      | 56 ---------------------------
 .github/workflows/ci.yaml | 80 +++++++++++++++++++++++++++++++++++++++
 README.md                 |  2 +-
 3 files changed, 81 insertions(+), 57 deletions(-)
 delete mode 100644 .circleci/config.yml
 create mode 100644 .github/workflows/ci.yaml

diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index d4895f0..0000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,56 +0,0 @@
-version: 2.1
-
-latest: &latest
-  pattern: "^1.16.*-erlang-26.*$"
-
-jobs:
-  build-test:
-    parameters:
-      tag:
-        type: string
-    docker:
-      - image: hexpm/elixir:<< parameters.tag >>
-    working_directory: ~/repo
-    environment:
-      LC_ALL: C.UTF-8
-    steps:
-      - checkout
-      - run:
-          name: Install hex and rebar
-          command: |
-            mix local.hex --force
-            mix local.rebar --force
-      - restore_cache:
-          keys:
-            - v1-mix-cache-<< parameters.tag >>-{{ checksum "mix.lock" }}
-      - run: mix deps.get
-      - run: mix test
-      - when:
-          condition:
-            matches: { <<: *latest, value: << parameters.tag >> }
-          steps:
-            - run: mix format --check-formatted
-            - run: mix deps.unlock --check-unused
-            - run: mix compile --warnings-as-errors
-            - run: mix docs
-            - run: mix hex.build
-            - run: mix credo -a --strict
-            - run: mix dialyzer
-      - save_cache:
-          key: v1-mix-cache-<< parameters.tag >>-{{ checksum "mix.lock" }}
-          paths:
-            - _build
-            - deps
-
-workflows:
-  checks:
-    jobs:
-      - build-test:
-          name: << matrix.tag >>
-          matrix:
-            parameters:
-              tag: [
-                1.16.2-erlang-26.2.4-alpine-3.19.1,
-                1.15.7-erlang-26.1.2-alpine-3.18.4,
-                1.14.5-erlang-25.3.2-alpine-3.17.3
-              ]
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 0000000..409b6d2
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,80 @@
+name: Elixir CI
+
+on:
+  push:
+    branches:
+      - main
+      - hotfix/[0-9]+.[0-9]+.[0-9]+
+      - release/[0-9]+.[0-9]+.[0-9]+
+    tags:
+      - "*"
+  pull_request:
+    types: [synchronize, opened, reopened]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    name: test (${{ matrix.elixir }}-erlang-${{ matrix.erlang }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - elixir: "1.16.2"
+            erlang: "26.2.4"
+            latest: true
+          - elixir: "1.15.7"
+            erlang: "26.1.2"
+            latest: false
+          - elixir: "1.14.5"
+            erlang: "25.3.2"
+            latest: false
+
+    steps:
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+
+      - uses: erlef/setup-beam@fc68ffb90438ef2936bbb3251622353b3dcb2f93 # v1.24.0
+        with:
+          elixir-version: ${{ matrix.elixir }}
+          otp-version: ${{ matrix.erlang }}
+
+      - name: Restore deps/build cache
+        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+        with:
+          path: |
+            deps
+            _build
+          key: ${{ runner.os }}-mix-${{ matrix.elixir }}-${{ matrix.erlang }}-${{ hashFiles('mix.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-mix-${{ matrix.elixir }}-${{ matrix.erlang }}-
+
+      - run: mix deps.get
+
+      - run: mix test
+
+      - name: Quality checks (latest only)
+        if: matrix.latest
+        run: |
+          mix format --check-formatted
+          mix deps.unlock --check-unused
+          mix compile --warnings-as-errors
+          mix credo -a --strict
+          mix dialyzer
+        env:
+          MIX_ENV: test
+
+      - name: Docs + hex build (latest only)
+        if: matrix.latest
+        run: |
+          mix deps.get
+          mix docs
+          mix hex.build
+        env:
+          MIX_ENV: docs
diff --git a/README.md b/README.md
index 6bb6c47..a06d35e 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # CredoBinaryPatterns
 
-[![CircleCI](https://circleci.com/gh/smartrent/credo_binary_patterns.svg?style=svg)](https://circleci.com/gh/smartrent/credo_binary_patterns)
+[![Elixir CI](https://github.com/smartrent/credo_binary_patterns/actions/workflows/ci.yaml/badge.svg)](https://github.com/smartrent/credo_binary_patterns/actions/workflows/ci.yaml)
 [![Hex version](https://img.shields.io/hexpm/v/credo_binary_patterns.svg "Hex version")](https://hex.pm/packages/credo_binary_patterns)
 
 The `:credo_binary_patterns` library contains Credo checks for