为什么我无法安装oauth2客户端？

Question

在作曲家身上发现一些奇怪的错误，任何人都知道我可以接下来做什么？我正尝试在Laravel 5.1上安装oauth2客户端，以便我可以使用它连接到联属网络API。

Using version ~2.2 for league/oauth2-client 
./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 
- Installation request for league/oauth2-client ~2.2 -> satisfiable by league/oauth2-client[2.2.0]. 
- Conclusion: remove paragonie/random_compat v1.4.2 
- league/oauth2-client 2.2.0 requires paragonie/random_compat ^2.0 -> satisfiable by paragonie/random_compat[v2.0.0, v2.0.1, v2.0.10, 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, v1.4.2]. 
- Can only install one of: paragonie/random_compat[v2.0.1, v1.4.2]. 
- Can only install one of: paragonie/random_compat[v2.0.10, v1.4.2]. 
- Can only install one of: paragonie/random_compat[v2.0.2, v1.4.2]. 
- Can only install one of: paragonie/random_compat[v2.0.3, v1.4.2]. 
- Can only install one of: paragonie/random_compat[v2.0.4, v1.4.2]. 
- Can only install one of: paragonie/random_compat[v2.0.5, v1.4.2]. 
- Can only install one of: paragonie/random_compat[v2.0.6, v1.4.2]. 
- Can only install one of: paragonie/random_compat[v2.0.7, v1.4.2]. 
- Can only install one of: paragonie/random_compat[v2.0.8, v1.4.2]. 
- Can only install one of: paragonie/random_compat[v2.0.9, v1.4.2]. 
- Installation request for paragonie/random_compat == 1.4.2.0 -> satisfiable by paragonie/random_compat[v1.4.2]. 


Installation failed, reverting ./composer.json to its original content. 

我composer.json：

{ 
"name": "laravel/laravel", 
"description": "The Laravel Framework.", 
"keywords": ["framework", "laravel"], 
"license": "MIT", 
"type": "project", 
"require": { 
    "php": ">=5.5.9", 
    "laravel/framework": "5.1.*", 
    "bestmomo/scafold": "dev-master", 
    "illuminate/html": "5.*", 
    "barryvdh/laravel-dompdf": "0.6.*", 
    "davejamesmiller/laravel-breadcrumbs": "~3.0" 
}, 
"require-dev": { 
    "fzaninotto/faker": "~1.4", 
    "mockery/mockery": "0.9.*", 
    "phpunit/phpunit": "~4.0", 
    "phpspec/phpspec": "~2.1" 
}, 
"autoload": { 
    "classmap": [ 
     "database", 
     "app/helpers" 
    ], 
    "psr-4": { 
     "App\\": "app/" 
    } 
}, 
"autoload-dev": { 
    "classmap": [ 
     "tests/TestCase.php" 
    ] 
}, 
"scripts": { 
    "post-install-cmd": [ 
     "php artisan clear-compiled", 
     "php artisan optimize" 
    ], 
    "pre-update-cmd": [ 
     "php artisan clear-compiled" 
    ], 
    "post-update-cmd": [ 
     "php artisan optimize" 
    ], 
    "post-root-package-install": [ 
     "php -r \"copy('.env.example', '.env');\"" 
    ], 
    "post-create-project-cmd": [ 
     "php artisan key:generate" 
    ] 
}, 
"config": { 
    "preferred-install": "dist" 
} 
} 

Answer 1

您的安装尝试的输出具有的所有信息：

目前，已安装paragonie/random_compat 5.0上。您的新软件包需要paragonie/random_compat^2.0 - 这是一个不兼容的更改（仅通过查看版本号而不是代码），所以Composer不能简单地安装新版本。

但是，某些已安装的组件需要较旧的版本。你可以通过运行composer why paragonie/random_compat找出它是哪一个，你也可以通过运行composer why-not paragonie/random_compat ^2.0找出为什么不能安装新版本，这可能会输出相同的信息。

总而言之，我认为如何解决这个问题的建议是：升级Laravel。 5.1是相当古老的，它取决于版本1.4中的paragonie/random_compat。较新版本的Laravel（5.3和5.4）允许〜1.4或〜2.0，这将解决您的问题。

虽然我还没有深入研究这个问题。另一个组件也可能依赖于这个库，也可能需要更新。拉拉维尔是我第一次猜测。