What is the status of CiviCRM working with Drupal 9?
Trying to upgrade a D8.8.6 site to D9 -> 

karins-MBP:d9civicrm.local sysadmin$ composer require drupal/core-recommended:~9.0.0@dev drupal/core-composer-scaffold:~9.0.0@dev --update-with-dependencies --no-update
./composer.json has been updated
karins-MBP:d9civicrm.local sysadmin$ composer update


Found two issues:

symfony conflict -&gt; Drupal 9 requires 4.4
civicrm/civicrm-core 5.25.0 requires symfony/dependency-injection ^2.8.50 || ~3.0

pear exception conflict: Can only install one of: pear/pear_exception[v1.0.1, v1.0.0]; - pear/log 1.13.1 requires pear/pear_exception 1.0.0 -&gt; satisfiable by pear/pear_exception[v1.0.0].


WIP PR by Core Team -> to resolve the symfony conlict: https://github.com/civicrm/civicrm-core/pull/17380

And resolved!

This now works:

a) create a D8 project -> 

composer create-project drupal/recommended-project d9civicrm.local


b) cd d9civicrm.local

c) composer require civicrm/civicrm-core:dev-master civicrm/civicrm-packages:dev-master civicrm/civicrm-drupal-8:dev-master civicrm/civicrm-asset-plugin:~1.0.1

Go through the usual motions of installing D8 in your favourite language, database and timezone -> and then enable CiviCRM Core [you will need to ensure your web/sites/default dir is writable for the civicrm.settings.php file to be generated].

d) then onto D9 -> 

composer require pear/pear_exception:'1.0.1 as 1.0.0'


e) rm composer.lock

f) composer require drupal/core-recommended:^9.0 drupal/core-composer-scaffold:^9.0 drupal/core-project-message:^9.0 drupal/core-dev:^9.0 --update-with-all-dependencies

And that produces:


Next step is here: https://github.com/civicrm/civicrm-drupal-8/pull/40/files
[that will make CiviCRM installable as a D9 module]. 

Many more steps to go I'm sure! Thanks to Core Team and Mikey for their quick action on some of these items!

Update -> as of June 03 - 2020 -> webform_civicrm module is officially D9 Compatible: