nx build with --deleteOutputPath causes "Unknown option: '--deleteOutputPath'"

[KirillMetrik]

Current Behavior

running nx build <project_name> --deleteOutputPath=false causes the following error from Angular CLI:
Unknown option: '--deleteOutputPath'

I have tried to create a ticket regarding this in Angular Github: angular/angular-cli#19283 . But they told me this is an NX issue.

Expected Behavior

The build should run.

In version 9 of the whole environment deleteOutputPath was false by default, so it wasn't needed to build with this parameter. Since Angular 10 deleteOutputPath is true by default. We need to preserve an output path because we sometimes have an extra step copying some resources to it before the build.

Steps to Reproduce

The problem can be reproduced on https://github.com/nrwl/nx-examples:

1. clone nx-examples
2. run npm install
3. run nx build cart --deleteOutputPath=false

Environment

nx : Not Found
  @nrwl/angular : 10.3.1-beta.1
  @nrwl/cli : 10.3.1-beta.1
  @nrwl/cypress : 10.3.1-beta.1
  @nrwl/eslint-plugin-nx : Not Found
  @nrwl/express : Not Found
  @nrwl/jest : 10.3.1-beta.1
  @nrwl/linter : 10.3.1-beta.1
  @nrwl/nest : Not Found
  @nrwl/next : Not Found
  @nrwl/node : Not Found
  @nrwl/react : 10.3.1-beta.1
  @nrwl/schematics : Not Found
  @nrwl/tao : 10.3.1-beta.1
  @nrwl/web : 10.3.1-beta.1
  @nrwl/workspace : 10.3.1-beta.1
  typescript : 4.0.3

[KirillMetrik]

Any reaction to this please? @vsavkin ?

[FrozenPandaz]

We do not currently support that option and we always remove the output directory. I think it is a good option to have. Would someone like to add that option?

[github-actions]

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