[Bug Report]: RSPack has a peerDependency on Webpack

[iclanton]

System Info

System:
OS: Windows 10 10.0.22623
CPU: (8) x64 Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz
Memory: 35.40 GB / 63.84 GB
Binaries:
Node: 16.19.0 - ~\AppData\Local\nvs\default\node.EXE
Yarn: 1.22.19 - ~\AppData\Local\nvs\default\yarn.CMD
npm: 8.19.3 - ~\AppData\Local\nvs\default\npm.CMD
Browsers:
Chrome: 111.0.5563.65
Edge: Spartan (44.22621.1325.0), Chromium (109.0.1518.61), ChromiumDev (107.0.1387.2)
Internet Explorer: 11.0.22621.1
npmPackages:
@rspack/cli: ^0.1.1 => 0.1.1

This information doesn't matter for this issue.

Details

When installing @rspack/cli in a repo backed by pnpm with strict peer dependencies enabled, you get this error:

../../heft-plugins/heft-rspack-plugin # This is an arbitrary package path
└─┬ @rspack/cli 0.1.1
  └─┬ @rspack/dev-server 0.1.1
    ├─┬ webpack-dev-server 4.11.1
    │ ├── ✕ missing peer webpack@"^4.37.0 || ^5.0.0"
    │ └─┬ webpack-dev-middleware 5.3.3
    │   └── ✕ missing peer webpack@"^4.0.0 || ^5.0.0"
    └─┬ @rspack/dev-middleware 0.1.1
      └─┬ webpack-dev-middleware 6.0.0
        └── ✕ missing peer webpack@^5.0.0
Peer dependencies that should be installed:
  webpack@">=5.0.0 <6.0.0"

@rspack/dev-server has a dependency on webpack-dev-server and @rspack/dev-middleware has a dependency on webpack-dev-middleware which both have peerDependencies on webpack.

Reproduce link

No response

Reproduce Steps

In an empty folder, run:

1. pnpm init
2. pnpm install @rspack/cli --save --strict-peer-dependencies

[octogonz]

@hardfist maybe this is by design?

[hardfist]

yes this is by design right now, since we reuse lots of webpack related packages right now to avoid incompatible with webpack, I am wondering whether webpack-dev-middleware could list webpack as optionalPeerDependency other than peerDependency which could solve this problem.