Symfony 4-安装软件包时出现问题

Question

我尝试安装条形码包装，但出现错误，也许有人可以帮助我：

./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Restricting packages listed in "symfony/symfony" to "4.3.*"
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Installation request for __root__ dev-master -> satisfiable by __root__[dev-master].
    - alpin11/twig-barcode v1.0 requires symfony/symfony ^3.4 || ^4.0 -> satisfiable by symfony/symfony[v4.3.0, v4.3.1, v4.3.10, v4.3.11, v4.3.2, v4.3.3, v4.3.4, v4.3.5, v4.3.6, v4.3.7, v4.3.8, v4.3.9].
    - symfony/symfony v4.3.10 conflicts with __root__[dev-master].
    - symfony/symfony v4.3.11 conflicts with __root__[dev-master].
    - symfony/symfony v4.3.3 conflicts with __root__[dev-master].
    - symfony/symfony v4.3.4 conflicts with __root__[dev-master].
    - symfony/symfony v4.3.5 conflicts with __root__[dev-master].
    - symfony/symfony v4.3.6 conflicts with __root__[dev-master].
    - symfony/symfony v4.3.7 conflicts with __root__[dev-master].
    - symfony/symfony v4.3.8 conflicts with __root__[dev-master].
    - symfony/symfony v4.3.9 conflicts with __root__[dev-master].
    - symfony/symfony v4.3.0 conflicts with __root__[dev-master].
    - symfony/symfony v4.3.1 conflicts with __root__[dev-master].
    - symfony/symfony v4.3.2 conflicts with __root__[dev-master].
    - Installation request for alpin11/twig-barcode ^1.0 -> satisfiable by alpin11/twig-barcode[v1.0].


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

这是我的composer.json：

{
    "type": "project",
    "license": "proprietary",
    "require": {
        "php": "^7.1.3",
        "ext-ctype": "*",
        "ext-iconv": "*",
        "dompdf/dompdf": "^0.8.3",
        "endroid/qr-code-bundle": "^3.3",
        "phpoffice/phpspreadsheet": "^1.11",
        "sensio/framework-extra-bundle": "^5.3",
        "sensiolabs/security-checker": "^5.0",
        "symfony/apache-pack": "^1.0",
        "symfony/asset": "4.3.*",
        "symfony/console": "4.3.*",
        "symfony/dotenv": "4.3.*",
        "symfony/flex": "^1.1",
        "symfony/form": "4.3.*",
        "symfony/framework-bundle": "4.3.*",
        "symfony/maker-bundle": "^1.11",
        "symfony/orm-pack": "^1.0",
        "symfony/security-bundle": "4.3.*",
        "symfony/serializer-pack": "^1.0",
        "symfony/swiftmailer-bundle": "^3.2",
        "symfony/twig-bundle": "4.3.*",
        "symfony/validator": "4.3.*",
        "symfony/web-server-bundle": "4.3.*",
        "symfony/yaml": "4.3.*",
        "twig/extensions": "^1.5"
    },
    "config": {
        "preferred-install": {
            "*": "dist"
        },
        "sort-packages": true
    },
    "autoload": {
        "psr-4": {
            "App\\": "src/"
        }
    },
    "autoload-dev": {
        "psr-4": {
            "App\\Tests\\": "tests/"
        }
    },
    "replace": {
        "paragonie/random_compat": "2.*",
        "symfony/polyfill-ctype": "*",
        "symfony/polyfill-iconv": "*",
        "symfony/polyfill-php71": "*",
        "symfony/polyfill-php70": "*",
        "symfony/polyfill-php56": "*"
    },
    "scripts": {
        "auto-scripts": {
            "cache:clear": "symfony-cmd",
            "assets:install %PUBLIC_DIR%": "symfony-cmd",
            "security-checker security:check": "script"
        },
        "post-install-cmd": [
            "@auto-scripts"
        ],
        "post-update-cmd": [
            "@auto-scripts"
        ]
    },
    "conflict": {
        "symfony/symfony": "*"
    },
    "extra": {
        "symfony": {
            "allow-contrib": false,
            "require": "4.3.*"
        }
    },
    "require-dev": {
        "symfony/profiler-pack": "^1.0",
        "symfony/console": "^4.3"
    }
}

Answer 1

您应该向该程序包的提供者抱怨，因为它做出了错误的决定：该程序包强制安装symfony/symfony（所有Symfony组件的完整程序包），而当前的所有项目都应依赖于各个组件。那就是您的项目所做的：它安装每个

needed组件，而不是整个框架。

这就是您遇到的困难：完整的框架包symfony/symfony包含所有组件，并在replaces部分中列出了它们。同时安装框架包

和

单个组件会导致问题，并且不可能。但是由于该条形码包取决于整个框架，而您自己的应用程序取决于单个组件，因此无法继续安装。如果您确实要使用此软件包（可能有替代方法可以更好地构造其依赖项），则可以从4.3.*中删除所有Symfony组件（具有版本约束composer.json的组件），而需要symfony/symfony:4.3.*。之后，该软件包应该是可安装的