Is any way to extend or generate configuration for Angular CLI?

[fetis]

Bug Report or Feature Request (mark with an x)

- [ ] bug report -> please search issues before submitting
- [x] feature request

Command (mark with an x)

- [ ] new
- [x] build
- [x] serve
- [ ] test
- [ ] e2e
- [ ] generate
- [ ] add
- [ ] update
- [ ] lint
- [ ] xi18n
- [ ] run
- [ ] config
- [ ] help
- [ ] version
- [ ] doc

Versions

Angular CLI: 6.2.5
Node: 8.9.4
OS: darwin x64
Angular: 6.1.10
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.8.5
@angular-devkit/build-angular     0.8.5
@angular-devkit/build-optimizer   0.8.5
@angular-devkit/build-webpack     0.8.5
@angular-devkit/core              0.8.5
@angular-devkit/schematics        0.8.5
@angular/cdk                      6.4.7
@angular/cli                      6.2.5
@angular/material                 6.4.7
@ngtools/webpack                  6.2.5
@schematics/angular               0.8.5
@schematics/update                0.8.5
rxjs                              6.3.3
typescript                        2.9.2
webpack                           4.20.2

Desired functionality

Let's assume I have 5 language versions. According Angular way I have to create 5 configs for every build. It's a lot of repetition and manual work. Is any way that we can extend configuration or maybe some external tool that can generate it. Will it be possible to do this with schematics?

Yes, it's possible to workaround it somehow with individual parameters for the builder, but this eliminates usefulness angular.json and it would be might clear to provide only configuration parameters. The only way to specify it for serve is via config, so it's very problematic to develop

[alan-agius4]

Duplicate of #11233

[fetis]

#10612

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