Bump Yarn to 4.2.2

This allows us to use newer features of Yarn. For instance, we will be
able to write constraints in JavaScript format rather than Prolog.

.github/workflows/lint-build-test.yml

@@ -13,9 +13,15 @@ jobs:
     outputs:
       child-workspace-package-names: ${{ steps.workspace-package-names.outputs.child-workspace-package-names }}
     steps:
-      - uses: actions/checkout@v3
+      - name: Install a version of Node that gives us access to Corepack
+        uses: actions/setup-node@v4
+        with:
+          node-version: 'lts/*'
+      - name: Install Yarn
+        run: corepack enable
+      - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
           cache: yarn
@@ -34,9 +40,15 @@ jobs:
       matrix:
         node-version: [20.x]
     steps:
-      - uses: actions/checkout@v3
+      - name: Install a version of Node that gives us access to Corepack
+        uses: actions/setup-node@v4
+        with:
+          node-version: 'lts/*'
+      - name: Install Yarn
+        run: corepack enable
+      - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
           cache: yarn
@@ -56,14 +68,18 @@ jobs:
     needs: prepare
     strategy:
       matrix:
-        node-version: [20.x]
         package-name: ${{ fromJson(needs.prepare.outputs.child-workspace-package-names) }}
     steps:
-      - uses: actions/checkout@v3
-      - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v3
+      - name: Install a version of Node that gives us access to Corepack
+        uses: actions/setup-node@v4
+        with:
+          node-version: 'lts/*'
+      - name: Install Yarn
+        run: corepack enable
+      - uses: actions/checkout@v4
+      - name: Use Node.js
+        uses: actions/setup-node@v4
         with:
-          node-version: ${{ matrix.node-version }}
           cache: yarn
       - run: yarn --immutable
       - run: yarn workspace ${{ matrix.package-name }} changelog:validate
@@ -83,9 +99,15 @@ jobs:
       matrix:
         node-version: [20.x]
     steps:
-      - uses: actions/checkout@v3
+      - name: Install a version of Node that gives us access to Corepack
+        uses: actions/setup-node@v4
+        with:
+          node-version: 'lts/*'
+      - name: Install Yarn
+        run: corepack enable
+      - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
           cache: yarn
@@ -108,9 +130,15 @@ jobs:
         node-version: [18.x, 20.x]
         package-name: ${{ fromJson(needs.prepare.outputs.child-workspace-package-names) }}
     steps:
-      - uses: actions/checkout@v3
+      - name: Install a version of Node that gives us access to Corepack
+        uses: actions/setup-node@v4
+        with:
+          node-version: 'lts/*'
+      - name: Install Yarn
+        run: corepack enable
+      - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
           cache: yarn

.yarnrc.yml

@@ -1,6 +1,10 @@
+compressionLevel: mixed
+
+enableGlobalCache: false
+
 enableScripts: false
 
-enableTelemetry: 0
+enableTelemetry: false
 
 logFilters:
   - code: YN0004
@@ -11,9 +15,3 @@ nodeLinker: node-modules
 plugins:
   - path: .yarn/plugins/@yarnpkg/plugin-allow-scripts.cjs
     spec: "https://raw.githubusercontent.com/LavaMoat/LavaMoat/main/packages/yarn-plugin-allow-scripts/bundles/@yarnpkg/plugin-allow-scripts.js"
-  - path: .yarn/plugins/@yarnpkg/plugin-workspace-tools.cjs
-    spec: "@yarnpkg/plugin-workspace-tools"
-  - path: .yarn/plugins/@yarnpkg/plugin-constraints.cjs
-    spec: "@yarnpkg/plugin-constraints"
-
-yarnPath: .yarn/releases/yarn-3.3.0.cjs

docs/contributing.md

@@ -4,7 +4,8 @@
 
 - Install the current LTS version of [Node.js](https://nodejs.org)
   - If you are using [nvm](https://github.com/creationix/nvm#installation) (recommended) running `nvm install` will install the latest version and running `nvm use` will automatically choose the right node version for you.
-- Install [Yarn v3](https://yarnpkg.com/getting-started/install).
+- Install [Yarn](https://yarnpkg.com) via [Corepack](https://github.com/nodejs/corepack?tab=readme-ov-file#how-to-install)
+  - If you have Yarn installed globally via Homebrew or NPM, you'll need to uninstall it before enabling it via Corepack.
 - Run `yarn install` to install dependencies and run any required post-install scripts.
 - Run `yarn simple-git-hooks` to add a [Git hook](https://github.com/toplenboren/simple-git-hooks#what-is-a-git-hook) to your local development environment which will ensure that all files pass linting before you push a branch.
 

package.json

@@ -88,7 +88,7 @@
     "typescript": "~4.9.5",
     "yargs": "^17.7.2"
   },
-  "packageManager": "yarn@3.3.0",
+  "packageManager": "yarn@4.2.2",
   "engines": {
     "node": "^18.18 || >=20"
   },