Keep dependency cache fallbacks fast

Fall back when dependency cache is unavailable
Allow manual CI runs
2026-07-14 09:14:43 +00:00 · 2026-07-13 15:45:43 +01:00 · 2026-07-13 15:39:13 +01:00 · 2026-07-13 14:53:29 +01:00 · 2026-07-13 14:24:02 +01:00 · 2026-07-13 14:06:57 +01:00
2 changed files with 69 additions and 5 deletions
@@ -8,16 +8,33 @@ inputs:
  cache:
    description: Enable the yarn cache in setup-node
    default: "true"
+  node-modules-cache:
+    description: Restore the exact shared node_modules cache before installing
+    default: "false"

 runs:
  using: composite
  steps:
+    - name: Restore complete dependency tree
+      id: dependency-cache
+      if: inputs.node-modules-cache == 'true'
+      continue-on-error: true
+      uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
+      with:
+        path: |
+          node_modules
+          .yarn/install-state.gz
+        key: >-
+          node-modules-v1-${{ runner.os }}-${{ runner.arch }}-${{
+          hashFiles('.nvmrc', 'package.json', 'yarn.lock', '.yarnrc.yml', '.yarn/releases/**', '.yarn/patches/**') }}
+
    - name: Setup Node
      uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
      with:
        node-version-file: ".nvmrc"
-        cache: ${{ inputs.cache == 'true' && 'yarn' || '' }}
+        cache: ${{ inputs.cache == 'true' && (inputs.node-modules-cache != 'true' || steps.dependency-cache.outputs.cache-hit != 'true') && 'yarn' || '' }}

    - name: Install dependencies
+      if: inputs.node-modules-cache != 'true' || steps.dependency-cache.outputs.cache-hit != 'true'
      shell: bash
      run: yarn install ${{ inputs.immutable == 'true' && '--immutable' || '' }}
@@ -1,6 +1,7 @@
 name: CI

 on:
+  workflow_dispatch:
  push:
    branches:
      - dev
@@ -21,16 +22,56 @@ permissions:
  contents: read

 jobs:
-  lint:
-    name: Lint and check format
+  prepare-dependencies:
+    name: Prepare dependencies
    runs-on: ubuntu-latest
    steps:
      - name: Check out files from GitHub
        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
+      - name: Check for complete dependency tree
+        id: dependencies
+        continue-on-error: true
+        uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
+        with:
+          path: |
+            node_modules
+            .yarn/install-state.gz
+          key: >-
+            node-modules-v1-${{ runner.os }}-${{ runner.arch }}-${{
+            hashFiles('.nvmrc', 'package.json', 'yarn.lock', '.yarnrc.yml', '.yarn/releases/**', '.yarn/patches/**') }}
+          lookup-only: true
      - name: Setup Node and install
+        if: steps.dependencies.outputs.cache-hit != 'true'
        uses: ./.github/actions/setup
+        with:
+          cache: false
+      - name: Save complete dependency tree
+        if: steps.dependencies.outputs.cache-hit != 'true'
+        continue-on-error: true
+        uses: actions/cache/save@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
+        with:
+          path: |
+            node_modules
+            .yarn/install-state.gz
+          key: >-
+            node-modules-v1-${{ runner.os }}-${{ runner.arch }}-${{
+            hashFiles('.nvmrc', 'package.json', 'yarn.lock', '.yarnrc.yml', '.yarn/releases/**', '.yarn/patches/**') }}
+
+  lint:
+    name: Lint and check format
+    needs: prepare-dependencies
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out files from GitHub
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
+      - name: Setup Node with shared dependencies
+        uses: ./.github/actions/setup
+        with:
+          node-modules-cache: true
      - name: Check for duplicate dependencies
        run: yarn dedupe --check
      - name: Build resources
@@ -63,14 +104,17 @@ jobs:
        run: yarn run lint:licenses
  test:
    name: Run tests
+    needs: prepare-dependencies
    runs-on: ubuntu-latest
    steps:
      - name: Check out files from GitHub
        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
-      - name: Setup Node and install
+      - name: Setup Node with shared dependencies
        uses: ./.github/actions/setup
+        with:
+          node-modules-cache: true
      - name: Build resources
        run: ./node_modules/.bin/gulp gen-icons-json build-translations build-locale-data
        env:
@@ -80,6 +124,7 @@ jobs:
  build:
    name: Build frontend
    needs:
+      - prepare-dependencies
      - lint
      - test
    runs-on: ubuntu-latest
@@ -88,8 +133,10 @@ jobs:
        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
-      - name: Setup Node and install
+      - name: Setup Node with shared dependencies
        uses: ./.github/actions/setup
+        with:
+          node-modules-cache: true
      - name: Build Application
        uses: ./.github/actions/build
        with:
Author	SHA1	Message	Date
Aidan Timson	69959f73a3	Keep dependency cache fallbacks fast	2026-07-13 15:45:43 +01:00
Aidan Timson	06b7836794	Fall back when dependency cache is unavailable	2026-07-13 15:39:13 +01:00
Aidan Timson	55ea661e31	Allow manual CI runs	2026-07-13 14:53:29 +01:00
Aidan Timson	23b9e97ee5	Use one dependency cache key	2026-07-13 14:24:02 +01:00
Aidan Timson	f807806bed	Use shared dependencies in CI	2026-07-13 14:06:57 +01:00
Aidan Timson	450a132fc7	Benchmark build with shared dependencies	2026-07-13 12:55:03 +01:00
Aidan Timson	c2fdde7ad9	Avoid restoring warm producer cache	2026-07-13 12:37:36 +01:00
Aidan Timson	2b659d27b1	Benchmark shared dependency cache	2026-07-13 12:25:54 +01:00