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.

hi. i was able to revisit this today and found a conflict with the following package
nikic/php-parser

$ composer why nikic/php-parser
Do not run Composer as root/super user! See https://getcomposer.org/root for details
Continue as root/super user [yes]?
drupal/upgrade_status 4.3.6 requires nikic/php-parser (^4.0.0|^5.0.0)

$ composer remove nikic/php-parser drupal/upgrade_status
Do not run Composer as root/super user! See https://getcomposer.org/root for details
Continue as root/super user [yes]?
nikic/php-parser is not required in your composer.json and has not been removed
./composer.json has been updated
Running composer update nikic/php-parser drupal/upgrade_status
Loading composer repositories with package information
Updating dependencies
Lock file operations: 0 installs, 0 updates, 7 removals
  - Removing dekor/php-array-table (2.0)
  - Removing drupal/upgrade_status (4.3.6)
  - Removing mglaman/phpstan-drupal (1.2.12)
  - Removing nikic/php-parser (v5.3.1)
  - Removing phpstan/phpstan (1.11.11)
  - Removing phpstan/phpstan-deprecation-rules (1.2.0)
  - Removing webflo/drupal-finder (1.3.1)
Writing lock file
Installing dependencies from lock file (including require-dev)
Package operations: 0 installs, 0 updates, 7 removals
  - Removing webflo/drupal-finder (1.3.1)
  - Removing phpstan/phpstan-deprecation-rules (1.2.0)
  - Removing phpstan/phpstan (1.11.11)
  - Removing nikic/php-parser (v5.3.1)
  - Removing mglaman/phpstan-drupal (1.2.12)
  - Removing drupal/upgrade_status (4.3.6)
  - Removing dekor/php-array-table (2.0)
Deleting /opt/httpd/htdocs/staging/vlcored11/master/web/modules/contrib/upgrade_status - deleted
Generating autoload files
45 packages you are using are looking for funding.
Use the `composer fund` command to find out more!
No security vulnerability advisories found.

after that the command $ composer require 'drupal/api:2.x-dev@dev' -W
worked fine

$ composer require 'drupal/api:2.x-dev@dev' -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
Lock file operations: 3 installs, 11 updates, 0 removals
  - Locking czproject/git-php (v4.3.0)
  - Upgrading doctrine/deprecations (1.1.3 => 1.1.4)
  - Locking drupal/api (dev-2.x ceeeeb0)
  - Locking nikic/php-parser (v4.19.4)
  - Upgrading symfony/dependency-injection (v7.1.8 => v7.1.9)
  - Upgrading symfony/deprecation-contracts (v3.5.0 => v3.5.1)
  - Upgrading symfony/event-dispatcher-contracts (v3.5.0 => v3.5.1)
  - Upgrading symfony/http-foundation (v7.1.8 => v7.1.9)
  - Upgrading symfony/http-kernel (v7.1.8 => v7.1.9)
  - Upgrading symfony/routing (v7.1.6 => v7.1.9)
  - Upgrading symfony/serializer (v7.1.8 => v7.1.9)
  - Upgrading symfony/service-contracts (v3.5.0 => v3.5.1)
  - Upgrading symfony/translation-contracts (v3.5.0 => v3.5.1)
  - Upgrading symfony/validator (v7.1.8 => v7.1.9)
Writing lock file
Installing dependencies from lock file (including require-dev)
Package operations: 3 installs, 11 updates, 0 removals
  - Syncing drupal/api (dev-2.x ceeeeb0) into cache
  - Upgrading symfony/deprecation-contracts (v3.5.0 => v3.5.1): Extracting archive
  - Upgrading symfony/translation-contracts (v3.5.0 => v3.5.1): Extracting archive
  - Upgrading symfony/validator (v7.1.8 => v7.1.9): Extracting archive
  - Upgrading symfony/serializer (v7.1.8 => v7.1.9): Extracting archive
  - Upgrading symfony/routing (v7.1.6 => v7.1.9): Extracting archive
  - Upgrading symfony/http-foundation (v7.1.8 => v7.1.9): Extracting archive
  - Upgrading symfony/service-contracts (v3.5.0 => v3.5.1): Extracting archive
  - Upgrading symfony/event-dispatcher-contracts (v3.5.0 => v3.5.1): Extracting archive
  - Upgrading doctrine/deprecations (1.1.3 => 1.1.4): Extracting archive
  - Upgrading symfony/http-kernel (v7.1.8 => v7.1.9): Extracting archive
  - Upgrading symfony/dependency-injection (v7.1.8 => v7.1.9): Extracting archive
  - Installing nikic/php-parser (v4.19.4): Extracting archive
  - Installing czproject/git-php (v4.3.0): Extracting archive
  - Installing drupal/api (dev-2.x ceeeeb0): Cloning ceeeeb08f0 from cache
Generating autoload files
46 packages you are using are looking for funding.
Use the `composer fund` command to find out more!
No security vulnerability advisories found.

Thanks for reporting back. As drupal/upgrade_status is a external dependency that is not needed here, I think there is still nothing to do here.