Unable to install on Drupal 10 due to ckeditor 5

See ✨ Add support for ckeditor5-autoformat Fixed for Drupal 10 and CKEditor5. This is included in core since Drupal 10.1.0.

"See #3227354: Add support for ckeditor5-autoformat for Drupal 10 and CKEditor5. This is included in core since Drupal 10.1.0." I just came to say the same thing.

Here you can see on drupal 10 that when I installed you module with composer, it also installed the ckeditor contrib module.

bevan@workhorse drupal_blog]$ git diff composer.lock 
diff --git a/composer.lock b/composer.lock
index b6e86c9..6504d70 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "e1cf633462082db0efe8c3151e1ed608",
+    "content-hash": "c6a676cebff0d8376b417b5103868afc",
     "packages": [
         {
             "name": "asm89/stack-cors",
@@ -1140,6 +1140,146 @@
             ],
             "time": "2022-12-14T08:49:07+00:00"
         },
+        {
+            "name": "drupal/ckeditor",
+            "version": "1.0.2",
+            "source": {
+                "type": "git",
+                "url": "https://git.drupalcode.org/project/ckeditor.git",
+                "reference": "1.0.2"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://ftp.drupal.org/files/projects/ckeditor-1.0.2.zip",
+                "reference": "1.0.2",
+                "shasum": "fec2ca9ad852a00c7b9584cb6040dc860364c481"
+            },
+            "require": {
+                "drupal/core": "^9.4 || ^10"

For even more confirmation:

ls html/modules/contrib/ckeditor
ckeditor.admin.inc  ckeditor.api.php  ckeditor.info.yml  ckeditor.libraries.yml  ckeditor.module  ckeditor.post_update.php  ckeditor.services.yml  config  css  js  LICENSE.txt  src  templates  tests  vendor

I'm not sure why it does that, but it appears to create conflicts on the config page where ckeditor and ckeditor 5 are both listed and they both throws errors on the page "CKEditor 5 only works with HTML-based text formats. The "Markdown" (markdown) filter implies this text format is not HTML anymore."

Yeah,, it's not working on Drupal 10.

DEV version installs for me on Drupal 10.1.4 but it has a dependency of CKEditor (v4).

## Test

1. Install ckeditor_markdown (dev)

$ composer require 'drupal/ckeditor_markdown:1.x-dev@dev'
...
Gathering patches for dependencies. This might take a minute.
  - Installing drupal/ckeditor (1.0.2): Extracting archive
  - Installing drupal/ckeditor_markdown (dev-1.x 555ffc0): Cloning 555ffc00e9 from cache

2. Enable ckeditor_markdown

$ drush en ckeditor_markdown                             
The following module(s) will be enabled: ckeditor_markdown, ckeditor

 Do you want to continue? (yes/no) [yes]:

3. Add button to Text editor toolbar.
- No button is available on "CKEditor 5" Text editor
- Button appears under "CKEditor" (v4) Text editor