Purchase a license
Download the software from the releases section of the website
Add this to the require section in composer.json:
"laravel/nova": "*"
Add this entire section to composer.json:
"repositories": [ { "type": "path", "url": "./nova" } ]
do composer update
(or composer install
if that doesn’t work)
Then
php artisan nova:install php artisan migrate
Reference
https://nova.laravel.com/docs/2.0/installation.html#requirements
See also