Sandbox modules don’t have a drupal.org/project/foo URL like full contrib modules, and therefore you can’t use composer require drupal/foo to add them.
If you have a Drupal 8 site using drupal-composer/drupal-project, here’s what to edit in composer.json – using a sandbox module of mine as an example.
- Within the repositories section
"drupal-wturrell/ckeditor_remove_elementspath": {
"type": "package",
"package": {
"name": "drupal-wturrell/ckeditor_remove_elementspath",
"version": "0.0.1",
"type": "drupal-module",
"source": {
"url": "https://git.drupal.org/sandbox/wturrell/3018599.git",
"type": "git",
"reference": "8.x-1.x"
}
}
},
2. In require (or run composer require with the name you’ve specified)
"drupal-wturrell/ckeditor_remove_elementspath": "^0.0.1",
You can choose any name you like, but drupal-username/module makes sense to me.
Your sandbox module doesn’t need a composer.json file of it’s own.