Cannot install API 2.0.0 for Drupal 11.0.1 - conflict with symfony/yaml

Does composer require 'drupal/api:2.x-dev@dev' work?

@fjgarlin. does not work. thanks.

i've upgraded from Drupal 11.0.1 to 11.0.4

$ composer require 'drupal/api:2.x-dev@dev'
Do not run Composer as root/super user! See https://getcomposer.org/root for details
Continue as root/super user [yes]?
./composer.json has been updated
Running composer update drupal/api
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - drupal/api dev-2.x requires nikic/php-parser ^4.7 -> found nikic/php-parser[v4.7.0, ..., v4.19.2] but it conflicts with your root composer.json require (^5.2).
    - drupal/api 2.x-dev is an alias of drupal/api dev-2.x and thus requires it to be installed too.
    - Root composer.json requires drupal/api 2.x-dev@dev -> satisfiable by drupal/api[2.x-dev (alias of dev-2.x)].

Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

Installation failed, reverting ./composer.json and ./composer.lock to their original content.

And what if you tried the suggested -W option?

thx. tried it. no luck.

$ composer require 'drupal/api:^2.0' --dry-run -W
Do not run Composer as root/super user! See https://getcomposer.org/root for details
Continue as root/super user [yes]?
./composer.json has been updated
Running composer update drupal/api --with-all-dependencies
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Root composer.json requires drupal/api ^2.0 -> satisfiable by drupal/api[2.0.0].
    - drupal/api 2.0.0 requires symfony/yaml ^4.4.19 || ^6.2 -> found symfony/yaml[v4.4.19, ..., v4.4.45, v6.2.0, ..., v6.4.12] but it conflicts with your root composer.json require (^7.1).


Installation failed, reverting ./composer.json and ./composer.lock to their original content.

I just tried installing it via the demo installation script and it does work without issues with Drupal 11.0.4

Demo folder + script: https://git.drupalcode.org/project/api/-/tree/2.x/demo

$ ddev composer show | grep drupal
...
drupal/api                               dev-2.x 27c5b55 Generates and displays API documentation pages
drupal/core                              11.0.4          Drupal is an open source content management platform powering millions of websites and apply...
...

I also tried with plain composer and again, it worked:

composer create drupal/recommended-project
composer require drush/drush
composer require 'drupal/api:2.x-dev@dev' -W

I committed a couple of minor changes to the demo script, but those weren't blocking.

Can you paste all the commands that you are running from beginning to end so I can reproduce? Otherwise I recommend that you see the demo script which contains commands on how to set it all up.