Current Behavior

When executing nx migrate latest and run the migrations to Nx@21.3.9 all my angular libraries failed with the message Skipping migration for project XXX. Unable to determine 'tsconfig.json' file in workspace config. and the migrations are not executed.

The script is trying to do these tasks:
Running the following migrations:

• @angular/cdk: migration-v20 (Updates the Angular CDK to v20)
• @angular/core: inject-flags (Replaces usages of the deprecated InjectFlags enum)
• @angular/core: test-bed-get (Replaces usages of the deprecated TestBed.get method with TestBed.inject)
• @angular/core: control-flow-migration (Converts the entire application to block control flow syntax)
• @angular/core: document-core (Moves imports of DOCUMENT from @angular/common to @angular/core)
• nx: 21-1-0-add-ignore-entries-for-nx-rule-files (Adds **/nx-rules.mdc and **/nx.instructions.md to .gitignore if not present)
• @nx/angular: update-angular-cli-version-20-0-0 (Update the @angular/cli package version to ~20.0.0.)
• @nx/angular: migrate-provide-server-rendering-import (Migrate imports of provideServerRendering from @angular/platform-server to @angular/ssr.)
• @nx/angular: replace-provide-server-routing (Replace provideServerRouting and provideServerRoutesConfig with provideServerRendering using withRoutes.)
• @nx/angular: set-generator-defaults-for-previous-style-guide (Update the generator defaults to maintain the previous style guide behavior.)
• @nx/angular: update-module-resolution (Update 'moduleResolution' to 'bundler' in TypeScript configurations. You can read more about this here: https://www.typescriptlang.org/tsconfig/#moduleResolution.)
• @nx/jest: rename-test-path-pattern (Rename the CLI option testPathPattern to testPathPatterns.)
• @nx/jest: replace-removed-matcher-aliases (Replace removed matcher aliases in Jest v30 with their corresponding matcher)
• @nx/angular: update-angular-cli-version-20-1-0 (Update the @angular/cli package version to ~20.1.0.)

After all the error messages I get the message:
Successfully finished running migrations from 'migrations.json'. This workspace is up to date!

Expected Behavior

I expect the migrations to run without an error.

GitHub Repo

No response

Steps to Reproduce

1. Having a NX 21.0.3 monorepo, execute nx migrate latest
2. Install the dependencies
3. Execute the migrations nx migrate --run-migrations

Nx Report

Node           : 22.14.0
OS             : win32-x64
Native Target  : x86_64-windows
npm            : 11.4.2

nx (global)            : 20.4.1
nx                     : 21.3.9
@nx/js                 : 21.3.9
@nx/jest               : 21.3.9
@nx/eslint             : 21.3.9
@nx/workspace          : 21.3.9
@nx/angular            : 21.3.9
@nx/devkit             : 21.3.9
@nx/eslint-plugin      : 21.3.9
@nx/module-federation  : 21.3.9
@nx/rspack             : 21.3.9
@nx/web                : 21.3.9
@nx/webpack            : 21.3.9
typescript             : 5.8.3
---------------------------------------
Community plugins:
@ngrx/effects                          : 20.0.0
@ngrx/entity                           : 20.0.0
@ngrx/operators                        : 20.0.0
@ngrx/signals                          : 20.0.0
@ngrx/store                            : 20.0.0
@syncfusion/ej2-angular-buttons        : 29.2.4
@syncfusion/ej2-angular-calendars      : 29.2.4
@syncfusion/ej2-angular-charts         : 29.2.4
@syncfusion/ej2-angular-dropdowns      : 29.2.4
@syncfusion/ej2-angular-grids          : 29.2.4
@syncfusion/ej2-angular-inplace-editor : 29.2.4
@syncfusion/ej2-angular-inputs         : 29.2.4
@syncfusion/ej2-angular-lists          : 29.2.4
@syncfusion/ej2-angular-navigations    : 29.2.4
@syncfusion/ej2-angular-notifications  : 29.2.4
@syncfusion/ej2-angular-popups         : 29.2.4
@syncfusion/ej2-angular-progressbar    : 29.2.4
@syncfusion/ej2-angular-treegrid       : 29.2.4

Failure Logs

Skipping migration for project XXX. Unable to determine 'tsconfig.json' file in workspace config

Package Manager Version

No response

Operating System

• macOS
• Linux
• Windows
• Other (Please specify)

Additional Information

No response