Argument 1 passed to App\Client::App\{closure}() must be an instance of Illuminate\Database\Eloquent\Builder, instance of Staudenmeir\LaravelCte\Query\Builder given

[Healyhatman]

Often, for reasons I don't understand, type-hinting a closure as Eloquent/Builder fails because it's apparently been passed a CteBuilder instead.

Why does this happen when as far as I can tell the particular scope isn't using any CTE functions?

For example, this:
\App\Client::whereIn('SYSID', function($q) { dd($q); })->first();
tells me that $q is a CteBuilder.

Client doesn't use QueriesExpressions, extends normal Model class. I don't know why it would be insisting on using the CTE builder in that function.

[staudenmeir]

Any closure that you could type-hint with Eloquent\Builder before installing the package, still works the same.

Methods like whereIn() pass a base query builder (Illuminate\Database\Query\Builder) into the closure, not an Eloquent builder. The package extends the query base builder with Staudenmeir\LaravelCte\Query\Builder globally and that's now passed into the closure. Because it's a subclass, a base query builder type-hint still works.

You can pass an Eloquent builder to whereIn(), but you don't get one in the closure:

\App\Client::whereIn('SYSID', System::select('id'))->first();