安装失败，正在将 ./composer.json 和 ./composer.lock 还原为其原始内容答案

【问题标题】：Installation failed, reverting ./composer.json and ./composer.lock to their original content安装失败，正在将 ./composer.json 和 ./composer.lock 还原为其原始内容
【发布时间】：2021-03-11 13:29:27
【问题描述】：

我尝试安装

composer require gloudemans/shoppingcart

打包到我的 laravel 项目。但是我一直收到这个错误

根 composer.json 需要 gloudemans/shoppingcart ^2.6 -> 可由 gloudemans/shoppingcart[2.6.0] 满足。 - gloudemans/shoppingcart 2.6.0 需要照明/支持 5.1。* || 5.2.* || 5.3.* || 5.4.* || 5.5.|| 5.6. || 5.7.* -> 找到了Illumination/support[v5.1.1, ..., 5.7.x-dev] 但它与另一个需求冲突。

作曲家.json

{
    "name": "laravel/laravel",
    "type": "project",
    "description": "The Laravel Framework.",
    "keywords": [
        "framework",
        "laravel"
    ],
    "license": "MIT",
    "require": {
        "php": "^7.3|^8.0",
        "fideloper/proxy": "^4.4",
        "fruitcake/laravel-cors": "^2.0",
        "guzzlehttp/guzzle": "^7.0.1",
        "laravel/framework": "^8.12",
        "laravel/tinker": "^2.5"

    },
    "require-dev": {
        "facade/ignition": "^2.5",
        "fakerphp/faker": "^1.9.1",
        "laravel/ui": "^3.1",
        "mockery/mockery": "^1.4.2",
        "nunomaduro/collision": "^5.0",
        "phpunit/phpunit": "^9.3.3"
    },
    "config": {
        "optimize-autoloader": true,
        "preferred-install": "dist",
        "sort-packages": true
    },
    "extra": {
        "laravel": {
            "dont-discover": []
        }
    },
    "autoload": {
        "psr-4": {
            "App\\": "app/",
            "Database\\Factories\\": "database/factories/",
            "Database\\Seeders\\": "database/seeders/"
        }
    },
    "autoload-dev": {
        "psr-4": {
            "Tests\\": "tests/"
        }
    },
    "minimum-stability": "dev",
    "prefer-stable": true,
    "scripts": {
        "post-autoload-dump": [
            "Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
            "@php artisan package:discover --ansi"
        ],
        "post-root-package-install": [
            "@php -r \"file_exists('.env') || copy('.env.example', '.env');\""
        ],
        "post-create-project-cmd": [
            "@php artisan key:generate --ansi"
        ]
    }
}

我是 laravel 的初学者。希望有人提供解决方案。提前致谢。

【问题讨论】：

这是一个 Laravel5 包，你使用的是 Laravel8

标签： php laravel composer-php

【解决方案1】：

如错误消息中所述：gloudemans/shoppingcart 与您已在应用程序中使用的 Laravel 8 不兼容。 hardevine/shoppingcart 或 bumbummen99/shoppingcart 似乎是与自 v5.1 起的任何 Laravel 版本兼容的分支

【讨论】：