Workspace detection breaks with ./ prefix in v7/v8 #4190
Description
Current Behavior
Yarn accepts a workspaces key with a ./ prefix in package.json.
{
"name": "my-monorepo",
"workspaces": ["./packages/*"]
}> yarn workspaces list
➤ YN0000: .
➤ YN0000: packages/package-a
➤ YN0000: packages/package-b
➤ YN0000: Done in 0s 1msHowever, lerna does not identify these packages:
> yarn lerna list -all
lerna notice cli v8.2.2
lerna info versioning independent
lerna success found 0 packagesIf you remove the ./ from the "workspaces" key:
{
"name": "my-monorepo",
"workspaces": ["packages/*"]
}Then lerna shows the same values as yarn workspaces list.
> yarn lerna list -all
lerna notice cli v8.2.2
lerna info versioning independent
package-a v1.0.0 packages/package-a (PRIVATE)
package-b v1.0.0 packages/package-b (PRIVATE)
lerna success found 2 packagesExpected Behavior
Based on the documentation:
By default, lerna will try and reuse any workspaces configuration you may have from your package manager of choice.
I expected that workspaces valid in yarn would be valid in lerna.
This behavior changed and has been broken since lerna@7.
Steps to Reproduce
I created a repo to reproduce this problem here: https://github.com/blimmer/test-lerna-workspaces. See the README for details on using the repro case.
Failure Logs / Configuration
lerna.json
{
"$schema": "node_modules/lerna/schemas/lerna-schema.json",
"version": "independent",
"npmClient": "yarn"
}Environment
> yarn lerna info
lerna notice cli v8.2.2
lerna info versioning independent
Environment info:
System:
OS: macOS 15.5
CPU: (14) arm64 Apple M3 Max
Binaries:
Node: 22.16.0 - /private/var/folders/n4/12j2gpld1clc4jsz0rlxzr2r0000gn/T/xfs-51ccbe4a/node
Yarn: 4.9.2 - /private/var/folders/n4/12j2gpld1clc4jsz0rlxzr2r0000gn/T/xfs-51ccbe4a/yarn
npm: 10.9.2 - ~/.asdf/plugins/nodejs/shims/npm
Utilities:
Git: 2.49.0 - /opt/homebrew/bin/git
npmPackages:
lerna: ^8.2.2 => 8.2.2