From f3a6d4dd182aae605eea4c079bc9ebcef3600b5c Mon Sep 17 00:00:00 2001
From: TC <th-ch@users.noreply.github.com>
Date: Wed, 8 Feb 2023 22:20:42 +0100
Subject: [PATCH] Adapt CI to yarn v3

---
 .github/workflows/build.yml | 76 ++++++++++++++++++++++++++++---------
 1 file changed, 58 insertions(+), 18 deletions(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f7a9cfd9..c6d384ff 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -23,20 +23,40 @@ jobs:
         with:
           node-version: ${{ env.NODE_VERSION }}
 
-      - name: Get yarn cache directory path
-        id: yarn-cache-dir-path
-        run: echo "::set-output name=dir::$(yarn cache dir)"
+      - name: Expose yarn config as "$GITHUB_OUTPUT"
+        id: yarn-config
+        shell: bash
+        run: |
+          echo "CACHE_FOLDER=$(yarn config get cacheFolder)" >> $GITHUB_OUTPUT
 
-      - uses: actions/cache@v3
-        id: yarn-cache
+      # Yarn rotates the downloaded cache archives, @see https://github.com/actions/setup-node/issues/325
+      # Yarn cache is also reusable between arch and os.
+      - name: Restore yarn cache
+        uses: actions/cache@v3
+        id: yarn-download-cache
         with:
-          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
-          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          path: ${{ steps.yarn-config.outputs.CACHE_FOLDER }}
+          key: yarn-download-cache-${{ hashFiles('yarn.lock') }}
           restore-keys: |
-            ${{ runner.os }}-yarn-
+            yarn-download-cache-
+
+      # Invalidated on yarn.lock changes
+      - name: Restore yarn install state
+        id: yarn-install-state-cache
+        uses: actions/cache@v3
+        with:
+          path: .yarn/ci-cache/
+          key: ${{ runner.os }}-yarn-install-state-cache-${{ hashFiles('yarn.lock', '.yarnrc.yml') }}
 
       - name: Install dependencies
-        run: yarn --frozen-lockfile
+        shell: bash
+        run: |
+          yarn install --immutable --inline-builds
+        env:
+          # CI optimizations. Overrides yarnrc.yml options (or their defaults) in the CI action.
+          YARN_ENABLE_GLOBAL_CACHE: "false" # Use local cache folder to keep downloaded archives
+          YARN_NM_MODE: "hardlinks-local" # Hardlinks-(local|global) reduces io / node_modules size
+          YARN_INSTALL_STATE_PATH: .yarn/ci-cache/install-state.gz # Very small speedup when lock does not change
 
       - name: Test
         uses: GabrielBB/xvfb-action@v1
@@ -81,20 +101,40 @@ jobs:
         with:
           node-version: ${{ env.NODE_VERSION }}
 
-      - name: Get yarn cache directory path
-        id: yarn-cache-dir-path
-        run: echo "::set-output name=dir::$(yarn cache dir)"
+      - name: Expose yarn config as "$GITHUB_OUTPUT"
+        id: yarn-config
+        shell: bash
+        run: |
+          echo "CACHE_FOLDER=$(yarn config get cacheFolder)" >> $GITHUB_OUTPUT
 
-      - uses: actions/cache@v3
-        id: yarn-cache
+      # Yarn rotates the downloaded cache archives, @see https://github.com/actions/setup-node/issues/325
+      # Yarn cache is also reusable between arch and os.
+      - name: Restore yarn cache
+        uses: actions/cache@v3
+        id: yarn-download-cache
         with:
-          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
-          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          path: ${{ steps.yarn-config.outputs.CACHE_FOLDER }}
+          key: yarn-download-cache-${{ hashFiles('yarn.lock') }}
           restore-keys: |
-            ${{ runner.os }}-yarn-
+            yarn-download-cache-
+
+      # Invalidated on yarn.lock changes
+      - name: Restore yarn install state
+        id: yarn-install-state-cache
+        uses: actions/cache@v3
+        with:
+          path: .yarn/ci-cache/
+          key: ${{ runner.os }}-yarn-install-state-cache-${{ hashFiles('yarn.lock', '.yarnrc.yml') }}
 
       - name: Install dependencies
-        run: yarn --frozen-lockfile
+        shell: bash
+        run: |
+          yarn install --immutable --inline-builds
+        env:
+          # CI optimizations. Overrides yarnrc.yml options (or their defaults) in the CI action.
+          YARN_ENABLE_GLOBAL_CACHE: "false" # Use local cache folder to keep downloaded archives
+          YARN_NM_MODE: "hardlinks-local" # Hardlinks-(local|global) reduces io / node_modules size
+          YARN_INSTALL_STATE_PATH: .yarn/ci-cache/install-state.gz # Very small speedup when lock does not change
 
       - name: Get version
         run: |