Unsupported Yarn v1 Classic used as default after Corepack installation

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
64/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Quiet
Tech stack
node.js
Domain
cli, tooling

Research direction

Start by inspecting config.json at the linked lines, then reproduce the behavior with yarn create vite in a fresh temporary directory after installing Corepack. Done means the default download prompt proposes yarn@4.14.1 rather than yarn@1.22.22 without requiring corepack install -g yarn.

Written by the indexing model from the issue text.

Description

Current behavior

If a yarn create command is run following installation of Corepack, then the unsupported Yarn v1 Classic 1.22.22 is offered for download.

https://github.com/nodejs/corepack/blob/fbe7f788a1d9d9ae2c60a39b80f00af1ccf9a7c0/config.json#L115-L116

Expected behavior

The current version of Yarn should be proposed as default for download after installing Corepack. Currently that would mean selecting yarn@4.14.1 instead of yarn@1.22.22.

Yarn Classic v1.x is no longer supported and is marked as frozen since January 2020.

Yarn Modern v4 is the currently supported version of Yarn (see https://github.com/yarnpkg/berry/releases for current release information).

It should not be necessary to have executed

corepack install -g yarn

before executing yarn create.

The default Yarn version for the global install is yarn@4.14.1. It is inconsistent to have the global install for Yarn with no version specification default to Yarn v4, whereas with no global install Corepack is defaulting to Yarn v1.

Versions

Corepack 0.34.7
Ubuntu 24.04.4 LTS
Node.js 25.9.0 (Current)

Steps to reproduce

Install Node.js 25.9.0 LTS

rm -rf ~/.cache/node/corepack # if repeat testing
npm install -g corepack@latest
cd $(mktemp -d)
yarn create vite # see https://vite.dev/guide

Logs

$ cd $(mktemp -d)
yarn create vite # see https://vite.dev/guide
! Corepack is about to download https://registry.yarnpkg.com/yarn/-/yarn-1.22.22.tgz
? Do you want to continue? [Y/n]

Workaround

corepack install -g yarn
Dominant language
TypeScript
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