[console] Make Drupal Console work with Symfony 4

[ranqiangjun]

Problem/Motivation

Drupal console is using Symfony 2|3 components, Drupal 9 is coming soon in about 6 months and there is a patch for Symfony 4.4 support in Drupal 8 already( See Allow Symfony 4.4 to be installed in Drupal 8)

Can not install drupal console while using drupal/core 9.0.x-dev

[HarishSTOnline]

Some info can be found here: https://www.drupal.org/project/drupal/issues/3146509

[camerongreen]

So....is this going to happen?

[longwave]

1.9.5 claims to be compatible with Drupal 9, so maybe this can be closed?

https://github.com/hechoendrupal/drupal-console/releases/tag/1.9.5

[camerongreen]

I can install it now but there are still a few issues, which seem very fundamental to me. Module creation for instance doesn't use the new version specifier.

[JasonWeakley]

I am trying to turn on debugging for Twigs, and the instructions I am reading say I need to have Drupal Console in order to turn that on, but then I run the composer command to install Console I am told that there is nothing to install. Composer version 1.10.17 2020-10-30 22:31:58 Drupal Version 9.1.0