Angular Library Generator not working with non simpleName

[NWenzl]

Current Behavior

When generating a library with the "@nx/angular:library" generator and using a directory together with simpleName=false the Library Name remains simple, although the documentation suggests the opposite: https://nx.dev/nx-api/angular/generators/library#simplename

nx g @nx/angular:library --directory=libs/path --name=test --standalone=false --simpleName=false --dry-run

Result

CREATE libs/path/project.json
CREATE libs/path/README.md
CREATE libs/path/tsconfig.json
CREATE libs/path/tsconfig.lib.json
CREATE libs/path/src/index.ts
CREATE libs/path/src/lib/test.module.ts
CREATE libs/path/jest.config.ts
CREATE libs/path/src/test-setup.ts
CREATE libs/path/tsconfig.spec.json
CREATE libs/path/.eslintrc.json
UPDATE tsconfig.base.json

Expected Behavior

I would expect the module to have the name "path-test.module.ts".
nx g @nx/angular:library --directory=libs/path --name=test --standalone=false --simpleName=false --dry-run

Result

CREATE libs/path/project.json
CREATE libs/path/README.md
CREATE libs/path/tsconfig.json
CREATE libs/path/tsconfig.lib.json
CREATE libs/path/src/index.ts
CREATE libs/path/src/lib/path-test.module.ts
CREATE libs/path/jest.config.ts
CREATE libs/path/src/test-setup.ts
CREATE libs/path/tsconfig.spec.json
CREATE libs/path/.eslintrc.json
UPDATE tsconfig.base.json

GitHub Repo

No response

Steps to Reproduce

1. Execute nx g @nx/angular:library --directory=libs/path --name=test --standalone=false --simpleName=false --dry-run

Nx Report

Node           : 22.12.0
OS             : darwin-arm64
Native Target  : aarch64-macos
yarn           : 1.22.19

nx                     : 20.3.0
@nx/js                 : 20.3.0
@nx/jest               : 20.3.0
@nx/eslint             : 20.3.0
@nx/workspace          : 20.3.0
@nx/angular            : 20.3.0
@nx/cypress            : 20.3.0
@nx/devkit             : 20.3.0
@nx/eslint-plugin      : 20.3.0
@nx/module-federation  : 20.3.0
@nx/plugin             : 20.3.0
@nx/storybook          : 20.3.0
@nx/web                : 20.3.0
@nx/webpack            : 20.3.0
typescript             : 5.6.3
---------------------------------------
Community plugins:
@compodoc/compodoc                     : 1.1.18
@ngrx/component-store                  : 19.0.0
@ngrx/effects                          : 19.0.0
@ngrx/entity                           : 19.0.0
@ngrx/operators                        : 19.0.0
@ngrx/router-store                     : 19.0.0
@ngrx/schematics                       : 19.0.0
@ngrx/store                            : 19.0.0
@ngrx/store-devtools                   : 19.0.0
@storybook/angular                     : 8.4.7
---------------------------------------
Local workspace plugins:
         @nw/workspace-plugin

Failure Logs

Package Manager Version

yarn version 1.22.19

Operating System

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

Additional Information

I debugged the issue and the name is passed to the generator as libFileName:
https://github.com/nrwl/nx/blob/master/packages/angular/src/generators/library/files/ng-module/src/lib/libFileName.module.ts__tpl__

This is passed from createFiles-Method called here:
https://github.com/nrwl/nx/blob/master/packages/angular/src/generators/library/library.ts#L78

The methods utilizes options.libraryOptions.fileName
https://github.com/nrwl/nx/blob/master/packages/angular/src/generators/library/lib/create-files.ts#L35

This is created in the normalizeOptions Method called here
https://github.com/nrwl/nx/blob/master/packages/angular/src/generators/library/lib/create-files.ts#L35

This gets the fileName using a method called determineProjectNameAndRootOptions to determine the the fileName based on the option passed to the schematic:

 const fileName = options.simpleName
    ? projectNames.projectSimpleName
    : projectNames.projectFileName;

https://github.com/nrwl/nx/blob/master/packages/angular/src/generators/library/lib/normalize-options.ts#L45

However, this methods only returns a differing projectFileName when the name starts with an @.

if (name.startsWith('@')) {
    const [_scope, ...rest] = name.split('/');
    projectFileName = rest.join('-');
    projectSimpleName = rest.pop();
  } else {
    projectSimpleName = name;
    projectFileName = name;
  }

https://github.com/nrwl/nx/blob/master/packages/devkit/src/generators/project-name-and-root-utils.ts#L62

This seems to be the root cause, but I don't understand if this is working as designed and I need to change my parameters, but trying different variations (like adding an @ to the name or directory) of the generator did not vary anything.

[NWenzl]

Digging further, I discovered that the following combination of name, directory and importPath works for me:
nx g @nx/angular:library --directory=libs/path/test --name=path-test --importPath=@nw/path/test --standalone=false --simpleName=false.

I found the documentation here as an example for "Nested Folder & Import": https://nx.dev/nx-api/angular/generators/library.

I still don't understand if my previous approach should have worked, so feel free to close this issue if the described behavior is intentional.

Maybe its a documentation issue, since the description for simpleName clearly states that the directory is included in the fileName https://nx.dev/nx-api/angular/generators/library#simplename.