Impossible to enable views if entities are not in SQL

That's the calculate dependencies code, that has hardcoded assumptions that everything must be there when default views are imported, and it is not when the views data is not.

I'm not sure how to fix this myself, maybe we need some sort of dependency to skip those default views if the views data they need is not available?

I'm not sure how to fix this myself, maybe we need some sort of dependency to skip those default views if the views data they need is not available?

Yeah, I guess we want to check for the base table in views data + the existance of the sql query plugin maybe?

Discussed with @chx and @dawehner in IRC. The outcome of which is that we're going to add a new method to ConfigEntityBase called isInstallable() that will run before config entities are created by the installer. By default this returns TRUE but views will be able to determine if the base table exists and go from there.

@chx just use the ConfigTest entity make it return false for isInstallable depending on state and then add to one of the existing config entity tests.

1. +++ b/core/lib/Drupal/Core/Config/Entity/ConfigEntityInterface.php
   @@ -192,4 +192,12 @@ public function onDependencyRemoval(array $dependencies);
   +  /**
   +   * Checks whether this entity is installable.
   +   *
   

   I always like if we explain a bit more why a config entity might not be installable, so for example has dependencies on more than just config_dependencies.

2. +++ b/core/modules/views/src/Entity/View.php
   @@ -441,4 +441,12 @@ public function mergeDefaultDisplaysOptions() {
   +    return \Drupal::service('views.views_data')->get($this->base_table);
   

   Let's directly cast it to bool here,

3. +++ b/core/modules/views_ui/src/ViewUI.php
   @@ -1241,4 +1241,12 @@ public function addDisplay($plugin_id = 'page', $title = NULL, $id = NULL) {
   +  ¶
   

   Nitpick: whitespace.

Thank you for addressing my concerns!

Good find. I don't see another way around this.

Committed/pushed to 8.0.x, thanks!