[rush] rush update/install fails when the default subspace has no packages on PNPM versions 9 and 10

[santala]

Summary

I’m trying to update from Rush 5.155.1 to 5.162.0 and pnpm 8.15.9 to 10 (via 9 to update the lockfile format).

After updating to Rush 5.162.0 and pnpm 9.15.9 and after updating the lockfile format to 9.0, rush install fails during the default subspace update with the following error:

The shrinkwrap file has not been updated to support workspaces. Run "rush update --full" to update the shrinkwrap file.

However, while rush update --full will complete successfully, subsequent rush update and rush install commands will continue to fail.

Even though the installation fails, rush post-install hooks are still executed.

Repro steps

1. rush init
2. Delete common/config/rush/.pnpmfile.cjs
3. Create common/config/subspaces/default and common/config/subspaces/myspace directories
4. Update configs and create a package.json:

// rush.json
{
  "$schema": "https://developer.microsoft.com/json-schemas/rush/v5/rush.schema.json",
  "rushVersion": "5.155.1",
  "pnpmVersion": "8.15.9",
  "projects": [
    {
      "subspaceName": "myspace",
      "packageName": "mypackage",
      "projectFolder": "mypackage"
    }
  ]
}

// common/config/rush/subspaces.json
{
  "$schema": "https://developer.microsoft.com/json-schemas/rush/v5/subspaces.schema.json",
  "subspacesEnabled": true,
  "splitWorkspaceCompatibility": false,
  "preventSelectingAllSubspaces": false,
  "subspaceNames": [
    "myspace",
    "default"
  ]
}

// mypackage/package.json
{
  "name": "mypackage",
  "version": "1.0.0",
  "devDependencies": {
    "typescript": "*"
  }
}

5. rush update

# myspace lockfile
lockfileVersion: '6.0'

settings:
  autoInstallPeers: false
  excludeLinksFromLockfile: false

importers:

  .: {}

  ../../../mypackage:
    devDependencies:
      typescript:
        specifier: '*'
        version: 5.9.3

packages:

  /typescript@5.9.3:
    resolution: {integrity: sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==}
    engines: {node: '>=14.17'}
    hasBin: true
    dev: true

# default lockfile
lockfileVersion: '6.0'

settings:
  autoInstallPeers: false
  excludeLinksFromLockfile: false

importers:

  .: {}

6. Update rush.json:

  "rushVersion": "5.162.0",
  "pnpmVersion": "9.15.9",

7. rush update (install-run-* scripts get updated)
8. rush install --purge (no failure)
9. rush update --recheck to update the lockfile format:

# myspace lockfile
lockfileVersion: '9.0'

settings:
  autoInstallPeers: false
  excludeLinksFromLockfile: false

pnpmfileChecksum: fm2bgttvmfglngapbjspr7zf2u

importers:

  .: {}

  ../../../mypackage:
    devDependencies:
      typescript:
        specifier: '*'
        version: 5.9.3

packages:

  typescript@5.9.3:
    resolution: {integrity: sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==}
    engines: {node: '>=14.17'}
    hasBin: true

snapshots:

  typescript@5.9.3: {}

# default lockfile
lockfileVersion: '9.0'

settings:
  autoInstallPeers: false
  excludeLinksFromLockfile: false

pnpmfileChecksum: fm2bgttvmfglngapbjspr7zf2u

importers:

  .: {}

10. rush update

Found configuration in /workspaces/rush-bug-repro/rush.json


Rush Multi-Project Build Tool 5.162.0 - https://rushjs.io
Node.js version is 22.17.0 (LTS)


Starting "rush update"
Installing for subspace: default
Trying to acquire lock for pnpm-9.15.9
Acquired lock for pnpm-9.15.9
Found pnpm version 9.15.9 in /home/node/.rush/node-v22.17.0/pnpm-9.15.9

Symlinking "/workspaces/rush-bug-repro/common/temp/pnpm-local"
  --> "/home/node/.rush/node-v22.17.0/pnpm-9.15.9"
Transforming /workspaces/rush-bug-repro/common/config/subspaces/default/.npmrc
  --> "/workspaces/rush-bug-repro/common/temp/default/.npmrc"

Updating workspace files in /workspaces/rush-bug-repro/common/temp/default

The shrinkwrap file has not been updated to support workspaces. Run "rush update --full" to update the shrinkwrap file.

11. rush update --full (finishes successfully)
12. rush update

Updating workspace files in /workspaces/rush-bug-repro/common/temp/default

The shrinkwrap file has not been updated to support workspaces. Run "rush update --full" to update the shrinkwrap file.

Details

The problem seems to be with this check:

rushstack/libraries/rush-lib/src/logic/pnpm/PnpmShrinkwrapFile.ts

Lines 347 to 351 in 23f78ab

	// Lockfile v9 always has "." in importers filed.
	this.isWorkspaceCompatible =
	this.shrinkwrapFileMajorVersion >= ShrinkwrapFileMajorVersion.V9
	? this.importers.size > 1
	: this.importers.size > 0;

Standard questions

Please answer these questions to help us investigate your issue more quickly:

Question	Answer
@microsoft/rush globally installed version?	5.162.0
rushVersion from rush.json?	5.155.1, 5.162.0
useWorkspaces from rush.json?	unset
Operating system?	Mac
Would you consider contributing a PR?	Maybe
Node.js version (node -v)?	22.17.0

[polmic]

Hi, i had the same error when bumping from a much older rush version (5.103).
It turns out the useWorkspaces prop got set to true in pnpm-config.json

* This option is strongly recommended. The default value is false.
*/
"useWorkspaces": true,

Putting it back to false fixed it for me.