Latest 8.1.1-canary.55 version compatibility issue with next-css plugin

[jishaal]

Bug report

Describe the bug

While attempting to run the with-linaria example which uses the next-css plugin, I found the following error gets thrown when using the latest canary build of next.js 8.1.1-canary.55

{ Error: Cannot find module 'webpack'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Module.require (internal/modules/cjs/loader.js:690:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at Object.<anonymous> (/sandbox/node_modules/extract-css-chunks-webpack-plugin/dist/index.js:11:16)
    at Module._compile (internal/modules/cjs/loader.js:776:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3) code: 'MODULE_NOT_FOUND' }

To Reproduce

See https://codesandbox.io/s/nextjs-811-canary55-bug-8gtqi

Downgrading the version of next.js to 8.1.1-canary.54 fixes the error

Expected behavior

There is no error

System information

• OS: macOS
• Version of Next.js: 8.1.1-canary.55

[nikitowsky]

Same issue with next-sass package.

[nblthree]

I think it's caused here #7628
Cc @guybedford

[Timer]

This will be fixed in the next canary. Sorry for the noise!

[jishaal]

Thanks team!