title: laravel passport cannot install
body: <p>i am using laravel 7.x version. i want to install laravel passport. but i have a error when i enter <strong>composer require laravel/passport</strong>.
  *
  Using version ^8.1 for laravel/framework
  ./composer.json has been updated
  Loading composer repositories with package information
  Updating dependencies (including require-dev)
  Your requirements could not be resolved to an installable set of packages.</p>
  <blockquote>
  <p>Problem 1
  - Conclusion: don't install laravel/framework v8.1.0
  - laravel/ui v2.4.0 requires illuminate/support ^7.0 -&gt; satisfiable by laravel/framework[v7.28.1], illuminate/support[7.x-dev, v7.0.0, v7.0.1, v7.0.2, v7.0.3, v7.0.4, v7.0.5, v7.0.6, v7.0.7, v7.0.8, v7.1.0, v7.1.1, v7.1.2, v7.1.3, v7.10.0, v7.10.1, v7.10.2, v7.10.3, v7.11.0, v7.12.0, v7.13.0, v7.14.0, v7.14.1, v7.15.0, v7.16.0, v7.16.1, v7.17.0, v7.17.1, v7.17.2, v7.18.0, v7.19.0, v7.19.1, v7.2.0, v7.2.1, v7.2.2, v7.20.0, v7.21.0, v7.22.0, v7.22.1, v7.22.2, v7.22.3, v7.22.4, v7.23.0, v7.23.1, v7.23.2, v7.24.0, v7.25.0, v7.26.0, v7.26.1, v7.27.0, v7.28.0, v7.28.1, v7.3.0, v7.4.0, v7.5.0, v7.5.1, v7.5.2, v7.6.0, v7.6.1, v7.6.2, v7.7.0, v7.7.1, v7.8.0, v7.8.1, v7.9.0, v7.9.1, v7.9.2].
  - laravel/ui v2.4.0 requires illuminate/support ^7.0 -&gt; satisfiable by laravel/framework[v7.28.1], illuminate/support[7.x-dev, v7.0.0, v7.0.1, v7.0.2, v7.0.3, v7.0.4, v7.0.5, v7.0.6, v7.0.7, v7.0.8, v7.1.0, v7.1.1, v7.1.2, v7.1.3, v7.10.0, v7.10.1, v7.10.2, v7.10.3, v7.11.0, v7.12.0, v7.13.0, v7.14.0, v7.14.1, v7.15.0, v7.16.0, v7.16.1, v7.17.0, v7.17.1, v7.17.2, v7.18.0, v7.19.0, v7.19.1, v7.2.0, v7.2.1, v7.2.2, v7.20.0, v7.21.0, v7.22.0, v7.22.1, v7.22.2, v7.22.3, v7.22.4, v7.23.0, v7.23.1, v7.23.2, v7.24.0, v7.25.0, v7.26.0, v7.26.1, v7.27.0, v7.28.0, v7.28.1, v7.3.0, v7.4.0, v7.5.0, v7.5.1, v7.5.2, v7.6.0, v7.6.1, v7.6.2, v7.7.0, v7.7.1, v7.8.0, v7.8.1, v7.9.0, v7.9.1, v7.9.2].
  - laravel/ui v2.4.0 requires illuminate/support ^7.0 -&gt; satisfiable by laravel/framework[v7.28.1], illuminate/support[7.x-dev, v7.0.0, v7.0.1, v7.0.2, v7.0.3, v7.0.4, v7.0.5, v7.0.6, v7.0.7, v7.0.8, v7.1.0, v7.1.1, v7.1.2, v7.1.3, v7.10.0, v7.10.1, v7.10.2, v7.10.3, v7.11.0, v7.12.0, v7.13.0, v7.14.0, v7.14.1, v7.15.0, v7.16.0, v7.16.1, v7.17.0, v7.17.1, v7.17.2, v7.18.0, v7.19.0, v7.19.1, v7.2.0, v7.2.1, v7.2.2, v7.20.0, v7.21.0, v7.22.0, v7.22.1, v7.22.2, v7.22.3, v7.22.4, v7.23.0, v7.23.1, v7.23.2, v7.24.0, v7.25.0, v7.26.0, v7.26.1, v7.27.0, v7.28.0, v7.28.1, v7.3.0, v7.4.0, v7.5.0, v7.5.1, v7.5.2, v7.6.0, v7.6.1, v7.6.2, v7.7.0, v7.7.1, v7.8.0, v7.8.1, v7.9.0, v7.9.1, v7.9.2].
  - Can only install one of: laravel/framework[8.x-dev, v7.28.1].
  - don't install illuminate/support 7.x-dev|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.0.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.0.1|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.0.2|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.0.3|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.0.4|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.0.5|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.0.6|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.0.7|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.0.8|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.1.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.1.1|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.1.2|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.1.3|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.10.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.10.1|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.10.2|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.10.3|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.11.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.12.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.13.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.14.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.14.1|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.15.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.16.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.16.1|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.17.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.17.1|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.17.2|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.18.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.19.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.19.1|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.2.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.2.1|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.2.2|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.20.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.21.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.22.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.22.1|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.22.2|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.22.3|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.22.4|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.23.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.23.1|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.23.2|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.24.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.25.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.26.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.26.1|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.27.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.28.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.28.1|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.3.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.4.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.5.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.5.1|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.5.2|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.6.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.6.1|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.6.2|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.7.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.7.1|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.8.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.8.1|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.9.0|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.9.1|don't install laravel/framework 8.x-dev
  - don't install illuminate/support v7.9.2|don't install laravel/framework 8.x-dev
  - Installation request for laravel/framework ^8.1 -&gt; satisfiable by laravel/framework[8.x-dev, v8.1.0].
  - Installation request for laravel/ui (locked at v2.4.0, required as ^2.1) -&gt; satisfiable by laravel/ui[v2.4.0].</p>
  </blockquote>
  <p>Installation failed, reverting ./composer.json to its original content.
  *</p>