无法将您的要求解析为一组可安装的软件包。 - Laravel 5.7

Question

我试图安装一个包

composer require vinkla/instagram php-http/message php-http/guzzle6-adapter 

我不断得到

Do not run Composer as root/super user! See https://getcomposer.org/root for details                          
Using version ^9.1 for vinkla/instagram                                                                       
Using version ^1.7 for php-http/message                                                                       
Using version ^2.0 for php-http/guzzle6-adapter                                                               
./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                                                                                                   
    - nexmo/client 1.6.1 requires php-http/guzzle6-adapter ^1.0 -> satisfiable by php-http/guzzle6-adapter[v1.0.0, v1.1.0, v1.1.1] but these conflict with your requirements or minimum-stability.                          
    - nexmo/client 1.6.1 requires php-http/guzzle6-adapter ^1.0 -> satisfiable by php-http/guzzle6-adapter[v1.0.0, v1.1.0, v1.1.1] but these conflict with your requirements or minimum-stability.                          
    - nexmo/client 1.6.1 requires php-http/guzzle6-adapter ^1.0 -> satisfiable by php-http/guzzle6-adapter[v1.0.0, v1.1.0, v1.1.1] but these conflict with your requirements or minimum-stability.                          
    - Installation request for nexmo/client (locked at 1.6.1) -> satisfiable by nexmo/client[1.6.1].          


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

我在

php --version

PHP 7.2.14-1+ubuntu14.04.1+deb.sury.org+1 (cli) (built: Jan 13 2019 10:33:56) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
    with Zend OPcache v7.2.14-1+ubuntu14.04.1+deb.sury.org+1, Copyright (c) 1999-2018, by Zend Technologies

作曲家.json

{
    "name": "laravel/laravel",
    "description": "The Laravel Framework.",
    "keywords": ["framework", "laravel"],
    "license": "MIT",
    "type": "project",
    "require": {
        "laravel/framework": "5.7.*",
        "intervention/image": "^2.3",
        "laravelcollective/remote": "5.7.*",
        "doctrine/dbal": "^2.3",
        "league/flysystem-sftp": "^1.0",
        "laravelcollective/html": "^5.4.0",
        "phpseclib/phpseclib": "~2.0",
        "htmlmin/htmlmin": "^5.0",
        "league/flysystem-aws-s3-v3": "~1.0",
        "vinkla/instagram": "^8.0",
        "php-http/message": "^1.6",
        "php-http/guzzle6-adapter": "^1.1"
    },
    "require-dev": {
        "phpunit/phpunit": "~7.0",
        "phpspec/phpspec": "~5.0",
        "symfony/dom-crawler": "~3.1",
        "symfony/css-selector": "~3.1",
        "filp/whoops" : "~2.0"
    },
    "autoload": {
        "classmap": [ "database" ],

        "psr-4": {
            "App\\": "app/"
        }
    },
    "autoload-dev": {
        "classmap": [
        ]
    },
    "scripts": {
        "post-install-cmd": [
        "php artisan clear-compiled",
        "php artisan optimize"
        ],
        "post-update-cmd": [
        "php artisan clear-compiled",
        "php artisan optimize"
        ],
        "post-create-project-cmd": [
        "php -r \"copy('.env.example', '.env');\"",
        "php artisan key:generate"
        ],
        "post-autoload-dump": [
            "Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
            "@php artisan package:discover"
        ]
    },
    "config": {
        "preferred-install": "dist"
    }
}

我应该检查什么来解决这个问题？

Answer 1

通过 Composer 将新包添加到您的项目中的常见方法有两种：更新composer.json ，或使用命令composer require 。 看起来您在这里同时进行了两项操作，而 Composer 感到困惑。

当您使用composer require ，Composer 通常会使用最新版本。 您可以在命令后的屏幕截图中看到这一行：

为 php-http/guzzle6-adapter 使用^2.0版本

^2.0与 Instagram 包冲突，后者需要^1.1 。 您可以通过以下两种方式之一解决此问题：

1) 手动更新 composer.json

指定版本^1.1 composer.json看起来不错，但您不想使用composer require命令来安装它。 相反，请使用composer update 。

您可以不带任何参数运行composer update ，它将安装任何新软件包并更新任何具有新版本可用的现有软件包。 这可能不是您想要的，因此您可以指定要更新的包。 在这种情况下，它是您正在安装的那些：

composer update vinkla/instagram php-http/message php-http/guzzle6-adapter

2）在require命令中明确版本号

您可以使用以下语法在composer require指定版本要求： vendor/package:[version]因此，您的命令变为：

composer require vinkla/instagram php-http/message php-http/guzzle6-adapter:^1.1

Answer 2

我在一些包上也遇到过这个问题，根据你的错误，你可以指定包版本。 这对我有用：

composer require php-http/guzzle6-adapter:^1.1