App that uses Layers does not add modules to resolution path (Vitest e2e)

[JessicaSachs]

Environment

• Operating System: Darwin
• Node Version: v22.14.0
• Nuxt Version: 3.17.5
• CLI Version: 3.25.1
• Nitro Version: 2.11.12
• Package Manager: pnpm@10.11.0
• Builder: -
• User Config: -
• Runtime Modules: -
• Build Modules: -

Reproduction

I opened a PR with the failing example under app-vitest-layers. #1329

I'm going to work on implementing a fix.

Describe the bug

Cannot E2E test applications that depend on layers where the dependency is not installed in the global node_modules path

Additional context

No response

Logs

❯  nuxt  test/dev.e2e.spec.ts (1 test | 1 skipped) 291ms
   ↓ server (dev) > runs a test

⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ Failed Suites 1 ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯

 FAIL   nuxt  test/dev.e2e.spec.ts [ test/dev.e2e.spec.ts ]
TypeError: Could not load `@nuxtjs/tailwindcss`. Is it installed?
 ❯ loadNuxtModuleInstance ../../node_modules/.pnpm/@nuxt+kit@3.17.5_magicast@0.3.5/node_modules/@nuxt/kit/dist/index.mjs:2575:9
 ❯ installModule ../../node_modules/.pnpm/@nuxt+kit@3.17.5_magicast@0.3.5/node_modules/@nuxt/kit/dist/index.mjs:2486:73
 ❯ initNuxt ../../node_modules/.pnpm/nuxt@3.17.5_@parcel+watcher@2.5.1_@types+node@22.15.21_better-sqlite3@11.10.0_db0@0.3.2_e441e6eb02f3916598e538e1e9eea283/node_modules/nuxt/dist/shared/nuxt.DAkeCY9U.mjs:5853:11
 ❯ loadNuxt ../../node_modules/.pnpm/nuxt@3.17.5_@parcel+watcher@2.5.1_@types+node@22.15.21_better-sqlite3@11.10.0_db0@0.3.2_e441e6eb02f3916598e538e1e9eea283/node_modules/nuxt/dist/shared/nuxt.DAkeCY9U.mjs:6078:5
 ❯ Module.loadNuxt ../../node_modules/.pnpm/@nuxt+kit@3.17.5_magicast@0.3.5/node_modules/@nuxt/kit/dist/index.mjs:2721:19
 ❯ loadFixture ../../src/e2e/nuxt.ts:58:16
 ❯ beforeAll ../../src/e2e/setup/index.ts:47:7

[danielroe]

I think this ended up being a separate issue, right?

#1329 (comment)