diff --git a/compat-tests/fixtures/cra/package/package.json b/compat-tests/fixtures/cra/package/package.json
index f59d7ae..934354c 100644
--- a/compat-tests/fixtures/cra/package/package.json
+++ b/compat-tests/fixtures/cra/package/package.json
@@ -29,10 +29,17 @@
     "web-vitals": "^1.0.1"
   },
   "eslintConfig": {
-    "extends": ["react-app", "react-app/jest"]
+    "extends": [
+      "react-app",
+      "react-app/jest"
+    ]
   },
   "browserslist": {
-    "production": [">0.2%", "not dead", "not op_mini all"],
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
     "development": [
       "last 1 chrome version",
       "last 1 firefox version",
diff --git a/compat-tests/fixtures/react18/package/package.json b/compat-tests/fixtures/react18/package/package.json
index 86f5a75..6e9c060 100644
--- a/compat-tests/fixtures/react18/package/package.json
+++ b/compat-tests/fixtures/react18/package/package.json
@@ -15,5 +15,8 @@
     "react": "^18.1.0",
     "react-dom": "^18.1.0",
     "serve": "14.2.0"
+  },
+  "devDependencies": {
+    "buffer": "^5.7.1"
   }
 }
diff --git a/compat-tests/fixtures/vite2/package/package.json b/compat-tests/fixtures/vite2/package/package.json
index f7b3f66..f0e738d 100644
--- a/compat-tests/fixtures/vite2/package/package.json
+++ b/compat-tests/fixtures/vite2/package/package.json
@@ -3,7 +3,7 @@
   "version": "0.0.0",
   "scripts": {
     "dev": "vite",
-    "build": "tsc && vite build",
+    "build": "vite build",
     "preview": "vite preview"
   },
   "dependencies": {
diff --git a/compat-tests/fixtures/vite2/package/tsconfig.json b/compat-tests/fixtures/vite2/package/tsconfig.json
index 3d0a51a..bc138a4 100644
--- a/compat-tests/fixtures/vite2/package/tsconfig.json
+++ b/compat-tests/fixtures/vite2/package/tsconfig.json
@@ -17,5 +17,5 @@
     "jsx": "react-jsx"
   },
   "include": ["src"],
-  "references": [{ "path": "./tsconfig.node.json" }]
+  "references": [{"path": "./tsconfig.node.json"}]
 }
diff --git a/compat-tests/scripts/scripts.mjs b/compat-tests/scripts/scripts.mjs
index 9095909..cfe7089 100644
--- a/compat-tests/scripts/scripts.mjs
+++ b/compat-tests/scripts/scripts.mjs
@@ -50,8 +50,10 @@ process.env.NPM_CONFIG_REGISTRY = config.VERDACCIO_URL
 
 const tempVersion =
   '0.0.1-COMPAT.' +
-  // a random integer between 1 and 50000
-  (Math.floor(Math.random() * 50000) + 1).toString()
+  (typeof argv['version'] === 'number'
+    ? argv['version'].toString()
+    : // a random integer between 1 and 50000
+      (Math.floor(Math.random() * 50000) + 1).toString())
 
 /**
  * This script starts verdaccio and publishes all the packages in the monorepo to it, then
@@ -65,7 +67,9 @@ export async function installFixtures() {
     return false
   })
 
-  console.log('Using temporary version: ' + tempVersion)
+  console.log(
+    `Using temporary version: ${tempVersion} . Use --version=[NUMBER] to change.`,
+  )
   console.log('Patching package.json files in ./test-*')
   const restoreTestPackageJsons = await patchTestPackageJsons()
 
@@ -348,7 +352,7 @@ export async function getCompatibilityTestSetups() {
  */
 export async function clean() {
   const toDelete = await globby(
-    './fixtures/*/package/(node_modules|yarn.lock|package-lock.json)',
+    './fixtures/*/package/(node_modules|yarn.lock|package-lock.json|.parcel-cache)',
     {
       cwd: config.PATH_TO_COMPAT_TESTS_ROOT,
       // node_modules et al are gitignored, but we still want to clean them
diff --git a/jest.compat-tests.config.js b/jest.compat-tests.config.js
index 7b5ff69..f06dc8e 100644
--- a/jest.compat-tests.config.js
+++ b/jest.compat-tests.config.js
@@ -5,6 +5,7 @@ module.exports = {
     '<rootDir>/compat-tests/*.compat-test.ts',
   ],
   moduleNameMapper: {},
+  modulePathIgnorePatterns: ['<rootDir>/compat-tests/verdaccio'],
   // setupFiles: ['./theatre/shared/src/setupTestEnv.ts'],
   automock: false,
   // transform: {