ci: garnix -> gha + attic

3 files changed, 129 insertions, 60 deletions

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 0000000..98e3af4
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,113 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  eval:
+    name: Evaluate flake
+    runs-on: ubuntu-latest
+
+    outputs:
+      matrix: ${{ steps.evaluate.outputs.matrix }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@v9
+
+      - name: Evaluate matrix
+        id: evaluate
+        run: |
+          set -eu
+          echo "matrix=$(nix eval --show-trace --json .#githubWorkflow.matrix)" >> "$GITHUB_OUTPUT"
+
+  build:
+    needs: eval
+
+    strategy:
+      fail-fast: false
+      matrix: ${{ fromJSON(needs.eval.outputs.matrix) }}
+
+    name: Build (${{ matrix.attr }})
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@v9
+
+      - name: Setup local Nix cache
+        uses: DeterminateSystems/magic-nix-cache-action@v2
+
+      - name: Setup Attic cache
+        uses: ryanccn/attic-action@v0
+        with:
+          endpoint: https://cache.mydadleft.me
+          cache: teawiebot
+          token: ${{ secrets.ATTIC_TOKEN }}
+          skip-push: ${{ github.event_name == 'pull_request' }}
+
+      - name: Run build
+        run: |
+          nix build -L --accept-flake-config .#${{ matrix.attr }}
+
+  check:
+    name: Check flake
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@v9
+
+      - name: Setup local Nix cache
+        uses: DeterminateSystems/magic-nix-cache-action@v2
+
+      - name: Setup Attic cache
+        uses: ryanccn/attic-action@v0
+        with:
+          endpoint: https://cache.mydadleft.me
+          cache: teawiebot
+          token: ${{ secrets.ATTIC_TOKEN }}
+          skip-push: ${{ github.event_name == 'pull_request' }}
+
+      - name: Run check
+        run: nix flake check --show-trace --accept-flake-config
+
+  # https://github.com/orgs/community/discussions/26822#discussioncomment-3305794
+  gate:
+    needs: [build, check]
+
+    name: CI Gate
+    runs-on: ubuntu-latest
+
+    if: always()
+
+    steps:
+      - name: Exit with result
+        run: |
+          build_result="${{ needs.build.result }}"
+          check_result="${{ needs.check.result }}"
+
+          results=("$build_result" "$check_result")
+
+          for result in "${results[@]}"; do [ "$result" != "success" ] && exit 1; done
+
+          exit 0
+
+  docker:
+    needs: gate
+
+    permissions:
+      packages: write
+
+    name: Push to image registry
+    if: github.event_name == 'push' || github.event_name == 'workflow_dispatch'
+    uses: ./.github/workflows/docker.yaml
diff --git a/.github/workflows/docker.yaml b/.github/workflows/docker.yaml
index 0009b4d..a2873ed 100644
--- a/.github/workflows/docker.yaml
+++ b/.github/workflows/docker.yaml
@@ -1,53 +1,12 @@
 name: Push to image registry
 
 on:
-  check_suite:
-    types: ["completed"]
+  workflow_call:
   workflow_dispatch:
 
 jobs:
-  build:
-    name: Build image
-
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        arch: [x86_64, aarch64]
-
-    # https://github.com/sellout/bash-strict-mode/commit/9bf1d65c2f786a9887facfcb81e06d8b8b5f4667
-    if: github.event.check_suite.app.name == 'Garnix CI'
-      && github.event.check_suite.conclusion == 'success'
-      && github.event.check_suite.latest_check_runs_count >= 8
-      && github.event.check_suite.head_branch == 'main'
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v9
-
-      - name: Setup Nix cache
-        uses: DeterminateSystems/magic-nix-cache-action@v2
-
-      - name: Build Docker image
-        id: build
-        run: |
-          nix build -L --accept-flake-config .#container-${{ matrix.arch }}
-          [ ! -L result ] && exit 1
-          echo "path=$(realpath result)" >> "$GITHUB_OUTPUT"
-
-      - name: Upload image
-        uses: actions/upload-artifact@v3
-        with:
-          name: container-${{ matrix.arch }}
-          path: ${{ steps.build.outputs.path }}
-          if-no-files-found: error
-          retention-days: 1
-
   push:
     name: Push image
-
-    needs: build
     runs-on: ubuntu-latest
 
     permissions:
@@ -57,12 +16,6 @@ jobs:
       REGISTRY: ghcr.io
       USERNAME: getchoo
 
-    # ditto
-    if: github.event.check_suite.app.name == 'Garnix CI'
-      && github.event.check_suite.conclusion == 'success'
-      && github.event.check_suite.latest_check_runs_count >= 8
-      && github.event.check_suite.head_branch == 'main'
-
     steps:
       - name: Set image name
         run: |
@@ -70,10 +23,15 @@ jobs:
 
       - uses: actions/checkout@v4
 
-      - name: Download images
-        uses: actions/download-artifact@v3
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@v9
+
+      - name: Setup Attic cache
+        uses: ryanccn/attic-action@v0
         with:
-          path: images
+          endpoint: https://cache.mydadleft.me
+          cache: teawiebot
+          token: ${{ secrets.ATTIC_TOKEN }}
 
       - name: Login to registry
         uses: docker/login-action@v3
@@ -90,9 +48,11 @@ jobs:
 
           architectures=("x86_64" "aarch64")
           for arch in "${architectures[@]}"; do
-            docker load < images/container-"$arch"/*.tar.gz
+            nix build -L --accept-flake-config .#container-"$arch"
+            docker load < result
             docker tag ${{ env.IMAGE_NAME }}:latest-"$arch" ${{ env.TAG }}-"$arch"
             docker push ${{ env.TAG }}-"$arch"
+            rm result
           done
 
           docker manifest create ${{ env.TAG }} \
diff --git a/.github/workflows/update-flake.yaml b/.github/workflows/update-flake.yaml
index f27539f..f87726f 100644
--- a/.github/workflows/update-flake.yaml
+++ b/.github/workflows/update-flake.yaml
@@ -10,27 +10,23 @@ jobs:
   update:
     runs-on: ubuntu-latest
 
-    permissions:
-      contents: write
-      pull-requests: write
-
     steps:
       - uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: nixbuild/nix-quick-install-action@v26
+        uses: DeterminateSystems/nix-installer-action@v9
 
-      - name: Update and create PR
+      - name: Update lockfile & make PR
         uses: DeterminateSystems/update-flake-lock@v20
         id: update
         with:
           commit-msg: "flake: update inputs"
           pr-title: "flake: update inputs"
-          token: ${{ github.token }}
+          token: ${{ secrets.MERGE_TOKEN }}
 
       - name: Enable auto-merge
         shell: bash
         run: gh pr merge --auto --rebase "$PR_ID"
         env:
-          GH_TOKEN: ${{ github.token }}
+          GH_TOKEN: ${{ secrets.MERGE_TOKEN }}
           PR_ID: ${{ steps.update.outputs.pull-request-number }}