title: composer unable to install laravel/passport
body: <p>I have created a new project with   </p>
  
  <pre><code>laravel new blogposts
  </code></pre>
  
  <p>using "Laravel Installer 2.0.1" globally installed on my ubuntu 18.</p>
  
  <p>When i trying to install passport using  </p>
  
  <pre><code>composer require laravel/passport
  </code></pre>
  
  <p>following errors are their  </p>
  
  <pre><code>Using version ^6.0 for laravel/passport
  ./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.  
  
  Problem 1
  - Conclusion: don't install laravel/passport v6.0.6
  
  - Conclusion: don't install laravel/passport v6.0.5
  - Conclusion: don't install laravel/passport v6.0.4
  - Conclusion: don't install laravel/passport v6.0.3
  - Conclusion: don't install laravel/passport v6.0.2
  - Conclusion: don't install laravel/passport v6.0.1
  - Conclusion: don't install laravel/passport v6.0.0
  - Conclusion: don't install laravel/passport 6.0.x-dev
  - Conclusion: remove paragonie/random_compat v9.99.99
  - Installation request for laravel/passport ^6.0 -&gt; satisfiable by laravel/passport[6.0.x-dev, v6.0.0, v6.0.1, v6.0.2, v6.0.3, v6.0.4, v6.0.5, v6.0.6].
  - Conclusion: don't install paragonie/random_compat v9.99.99
  - laravel/passport 6.0.x-dev requires league/oauth2-server ^7.0 -&gt; satisfiable by league/oauth2-server[7.0.0, 7.1.0, 7.1.1, 7.2.0].
  - league/oauth2-server 7.1.0 requires defuse/php-encryption ^2.1 -&gt; satisfiable by defuse/php-encryption[v2.1.0, v2.2.0].
  - league/oauth2-server 7.1.1 requires defuse/php-encryption ^2.1 -&gt; satisfiable by defuse/php-encryption[v2.1.0, v2.2.0].
  - league/oauth2-server 7.2.0 requires defuse/php-encryption ^2.1 -&gt; satisfiable by defuse/php-encryption[v2.1.0, v2.2.0].
  - league/oauth2-server 7.0.0 requires paragonie/random_compat ^2.0 -&gt; satisfiable by paragonie/random_compat[v2.0.0, v2.0.1, v2.0.10, v2.0.11, v2.0.12, v2.0.13, v2.0.14, v2.0.15, v2.0.16, v2.0.17, v2.0.2, v2.0.3, v2.0.4, v2.0.5, v2.0.6, v2.0.7, v2.0.8, v2.0.9].
  - defuse/php-encryption v2.1.0 requires paragonie/random_compat ~2.0 -&gt; satisfiable by paragonie/random_compat[v2.0.0, v2.0.1, v2.0.10, v2.0.11, v2.0.12, v2.0.13, v2.0.14, v2.0.15, v2.0.16, v2.0.17, v2.0.2, v2.0.3, v2.0.4, v2.0.5, v2.0.6, v2.0.7, v2.0.8, v2.0.9].
  - defuse/php-encryption v2.2.0 requires paragonie/random_compat ~2.0 -&gt; satisfiable by paragonie/random_compat[v2.0.0, v2.0.1, v2.0.10, v2.0.11, v2.0.12, v2.0.13, v2.0.14, v2.0.15, v2.0.16, v2.0.17, v2.0.2, v2.0.3, v2.0.4, v2.0.5, v2.0.6, v2.0.7, v2.0.8, v2.0.9].
  - Can only install one of: paragonie/random_compat[v2.0.0, v9.99.99].
  - Can only install one of: paragonie/random_compat[v2.0.1, v9.99.99].
  - Can only install one of: paragonie/random_compat[v2.0.10, v9.99.99].
  - Can only install one of: paragonie/random_compat[v2.0.11, v9.99.99].
  - Can only install one of: paragonie/random_compat[v2.0.12, v9.99.99].
  - Can only install one of: paragonie/random_compat[v2.0.13, v9.99.99].
  - Can only install one of: paragonie/random_compat[v2.0.14, v9.99.99].
  - Can only install one of: paragonie/random_compat[v2.0.15, v9.99.99].
  - Can only install one of: paragonie/random_compat[v2.0.16, v9.99.99].
  - Can only install one of: paragonie/random_compat[v2.0.17, v9.99.99].
  - Can only install one of: paragonie/random_compat[v2.0.2, v9.99.99].
  - Can only install one of: paragonie/random_compat[v2.0.3, v9.99.99].
  - Can only install one of: paragonie/random_compat[v2.0.4, v9.99.99].
  - Can only install one of: paragonie/random_compat[v2.0.5, v9.99.99].
  - Can only install one of: paragonie/random_compat[v2.0.6, v9.99.99].
  - Can only install one of: paragonie/random_compat[v2.0.7, v9.99.99].
  - Can only install one of: paragonie/random_compat[v2.0.8, v9.99.99].
  - Can only install one of: paragonie/random_compat[v2.0.9, v9.99.99].
  - Installation request for paragonie/random_compat (locked at v9.99.99) -&gt; satisfiable by paragonie/random_compat[v9.99.99].
  </code></pre>
  
  <p>Installation failed, reverting ./composer.json to its original content.
  Any help will be appreciated. Thanks. </p>