Otherwise, when installing phpstan-laravel along with the dev-mater version of phpstan, you get:
Problem 1
- Installation request for weebly/phpstan-laravel dev-master -> satisfiable by weebly/phpstan-laravel[dev-master].
- weebly/phpstan-laravel dev-master requires phpstan/phpstan ^0.9 -> satisfiable by phpstan/phpstan[0.9, 0.9.1, 0.9.2] but these conflict with your requirements or minimum-stability.
Otherwise, when installing phpstan-laravel along with the dev-mater version of phpstan, you get: