Renovate: lock file maintenance fails in Yarn Modern

@MikeMcC399

In separate testing in a clone of the repo, Renovate lockfile maintenance has been failing to update Yarn Modern examples. Although the logs show it is installing Corepack, it fails with an error message indicating that Yarn v1 Classic is being used instead of the configured Yarn Modern. This may need a bug report to Renovate / Mend.io.

File name: examples/yarn-modern/yarn.lock
error This project's package.json defines "packageManager": "yarn@4.18.0". However the current global version of Yarn is 1.22.22.

Presence of the "packageManager" field indicates that the project is meant to be used with Corepack, a tool included by default with all official Node.js distributions starting from 16.9 and 14.19.
Corepack must currently be enabled by running corepack enable in your terminal. For more information, check out https://yarnpkg.com/corepack.

In the meantime, exclude Yarn Modern / Yarn Modern pnp from lockfile maintenance.

Originally posted by @MikeMcC399 in #1909 (comment)

github-action/renovate.json

Lines 37 to 41 in 74d64e3

    
           { 
        
             "matchUpdateTypes": ["lockFileMaintenance"], 
        
             "matchFileNames": ["/^examples/yarn-modern/"], 
        
             "enabled": false 
        
           },

If Yarn Classic is disabled, instead of disabling Yarn Modern, then Renovate is able to correctly update Yarn Modern. This looks like a Renovate bug installing Corepack.

Similar issues:

Corepack / Yarn Berry issue when upgrading a forced resolution renovatebot/renovate#45417
Yarn: Error updating complex resolutions when yarn@4.0.1 is defined as packageManager renovatebot/renovate#25853
fix(manager/npm/yarn): detect corepack from package.json when managerData flag is missing renovatebot/renovate#45153

This is now reported to Renovate on renovatebot/renovate#46381

Navigation Menu

Repository navigation

Renovate: lock file maintenance fails in Yarn Modern #1910

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

	{
	"matchUpdateTypes": ["lockFileMaintenance"],
	"matchFileNames": ["/^examples/yarn-modern/"],
	"enabled": false
	},

Renovate: lock file maintenance fails in Yarn Modern #1910

Description

Activity

MikeMcC399 commented on Sep 22, 2026

MikeMcC399 commented on Sep 22, 2026

MikeMcC399 commented on Sep 22, 2026

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions