actions: use nix-eval-jobs for ci

3 files changed, 212 insertions, 9 deletions

diff --git a/.github/eval-flake.sh b/.github/eval-flake.sh
new file mode 100755
index 0000000..ceebcc9
--- /dev/null
+++ b/.github/eval-flake.sh
@@ -0,0 +1,90 @@
+#!/usr/bin/env bash
+set -euo pipefail
+### this is inspired by the ci script in [nixpkgs-unfree](https://github.com/numtide/nixpkgs-unfree)
+### link: https://github.com/numtide/nixpkgs-unfree/blob/127b9b18583de04c6207c2a0e674abf64fc4a3b1/ci.sh
+#
+## MIT License
+##
+## Copyright (c) 2022 Jonas Chevalier
+##
+## Permission is hereby granted, free of charge, to any person obtaining a copy
+## of this software and associated documentation files (the "Software"), to deal
+## in the Software without restriction, including without limitation the rights
+## to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+## copies of the Software, and to permit persons to whom the Software is
+## furnished to do so, subject to the following conditions:
+##
+## The above copyright notice and this permission notice shall be included in all
+## copies or substantial portions of the Software.
+##
+## THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+## IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+## FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+## AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+## LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+## OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+## SOFTWARE.
+
+function get_os() {
+    case "$1" in
+        "x86_64-linux") echo "ubuntu-latest" ;;
+        "x86_64-darwin") echo "macos-latest" ;;
+        "aarch64-linux") echo "ubuntu-latst" ;;
+    esac
+}
+
+args=(
+    --gc-roots-dir gc-roots
+    --check-cache-status
+    --force-recurse
+    --option allow-import-from-derivation true
+    --show-trace
+    --flake
+    '.#hydraJobs'
+)
+
+if [[ -n "${GITHUB_STEP_SUMMARY-}" ]]; then
+    log() {
+        echo "$*" >> "$GITHUB_STEP_SUMMARY"
+    }
+else
+    log() {
+        echo "$*"
+    }
+fi
+
+jobs=$(nix-eval-jobs "${args[@]}" | jq -r '. | @base64')
+jq -n '{"include": []}' > matrix.json
+
+had_error=0
+echo "$jobs" | while read -r job; do
+    job=$(echo "$job" | base64 -d)
+    attr=$(echo "$job" | jq -r .attr)
+    echo "## $attr"
+
+    error=$(echo "$job" | jq -r '.error')
+    if [[ $error == null ]]; then
+        log "### ✅ $attr"
+
+        system=$(echo "$job" | jq -r .system)
+        isCached=$(echo "$job" | jq -r .isCached)
+
+        jq ".include += [{\"attr\": \"$attr\", \"os\": \"$(get_os "$system")\", \"isCached\": $isCached}]" < matrix.json > matrix.json.tmp
+        mv matrix.json.tmp matrix.json
+    else
+        log "### ❌ $attr"
+        log
+        log "<details><summary>Evaluation error:</summary><pre>"
+        log "$error"
+        log "</pre></details>"
+        had_error=1
+    fi
+done
+
+if [[ $had_error -gt 0 ]]; then
+    rm matrix.json
+    exit 1
+fi
+
+echo "matrix=$(jq -r 'tostring' matrix.json)" >> "$GITHUB_OUTPUT"
+rm matrix.json
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 0000000..c4fc11e
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,113 @@
+name: CI
+
+on:
+  pull_request:
+  workflow_call:
+    secrets:
+      CACHIX_AUTH_TOKEN:
+        description: "auth token for cachi"
+  workflow_dispatch:
+
+jobs:
+  eval:
+    name: Evaluate flake
+    runs-on: ubuntu-latest
+
+    outputs:
+      matrix: ${{ steps.eval.outputs.matrix }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@v9
+
+      - name: Setup Cachix
+        uses: cachix/cachix-action@v13
+        with:
+          name: getchoo
+          authToken: ${{ secrets.CACHIX_AUTH_TOKEN }}
+
+      - name: Evaluate jobs
+        id: eval
+        run: |
+          nix shell --inputs-from . \
+            nixpkgs#{bash,coreutils,jq,nix-eval-jobs} \
+            --command bash ./.github/eval-flake.sh
+
+  build:
+    needs: eval
+
+    strategy:
+      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 Cachix
+        uses: cachix/cachix-action@v13
+        with:
+          name: getchoo
+          authToken: ${{ secrets.CACHIX_AUTH_TOKEN }}
+
+      - name: Check if cached
+        if: ${{ matrix.isCached }}
+        run: |
+          echo ${{ matrix.attr }} is already built!
+
+      - name: Run build
+        if: ${{ !matrix.isCached }}
+        run: |
+          nix build --print-build-logs --fallback \
+            .#hydraJobs.${{ matrix.attr }}
+
+  check:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+
+    name: Check flake (${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@v9
+
+      - name: Setup Cachix
+        uses: cachix/cachix-action@v13
+        with:
+          name: getchoo
+          authToken: ${{ secrets.CACHIX_AUTH_TOKEN }}
+
+      - name: Run check
+        run: |
+          nix flake check \
+            --print-build-logs \
+            --fallback \
+            --show-trace \
+            --option allow-import-from-derivation true
+
+  gate:
+    needs: [build, check]
+
+    name: CI Gate
+    runs-on: ubuntu-latest
+
+    if: always()
+
+    steps:
+      - name: Exit with result
+        run: |
+          build_result="${{ 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
diff --git a/.github/workflows/deploy.yaml b/.github/workflows/deploy.yaml
index 695d63c..98b3b1d 100644
--- a/.github/workflows/deploy.yaml
+++ b/.github/workflows/deploy.yaml
@@ -1,21 +1,21 @@
 name: Deploy infrastructure
 
 on:
-  check_suite:
-    types: [completed]
+  push:
+    branches: [main]
   workflow_dispatch:
 
 jobs:
+  ci:
+    uses: ./.github/workflows/ci.yaml
+    secrets: inherit
+
   nixos:
+    needs: ci
+
     name: Deploy NixOS systems
     runs-on: ubuntu-latest
 
-    # 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 >= 10
-      && github.event.check_suite.head_branch == 'main'
-
     concurrency:
       group: deploy
       cancel-in-progress: true
@@ -49,9 +49,9 @@ jobs:
             --command deploy
 
   opentofu:
-    name: Apply OpenTofu plan
     needs: nixos
 
+    name: Apply OpenTofu plan
     runs-on: ubuntu-latest
 
     concurrency: