[BUILD] Missing dependencies on build project with library - 6.0.0-rc.2

[choucry13]

Versions

    _                      _                 ____ _     ___
   / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
  / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
 / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
/_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
               |___/

Angular CLI: 6.0.0-rc.2
Node: 9.6.1
OS: darwin x64
Angular: 6.0.0-rc.3
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

@angular/cli: 6.0.0-rc.2
@angular-devkit/architect: 0.5.4
@angular-devkit/build-angular: 0.5.4
@angular-devkit/build-ng-packagr: 0.5.4
@angular-devkit/build-optimizer: 0.5.4
@angular-devkit/core: 0.5.4
@angular-devkit/schematics: 0.5.4
@ngtools/json-schema: 1.1.0
@ngtools/webpack: 6.0.0-rc.2.4
@schematics/angular: 0.5.4
@schematics/update: 0.5.4
typescript: 2.7.2
webpack: 4.5.0

Repro steps

• Step 1
  ng new philou
• Step 2
  ng g library tim
• Step 3
  ng build --prod

Observed behavior

Two devDepencies are not present : 
 - @angular-devkit/build-ng-packagr
 - ng-packagr

Desired behavior

add this packages solved the issue.

Mention any other details that might be useful (optional)

[trevor-hackett]

Duplicate of #10216

[filipesilva]

Closing as duplicate, thanks @yarrgh !

[choucry13]

Sorry guys. I don’t see that already reported 😅.

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