Symfony 4 - 安装捆绑包时出现问题

Question

我尝试安装条形码包，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

你应该向那个包的提供者抱怨一个错误的决定：这个包强制安装 symfony/symfony（所有 Symfony 组件的完整包），而所有当前项目应该依赖于个人组件。这就是您的项目所做的：它安装每个 需要的 组件，而不是整个框架。

这就是您遇到困难的地方：完整的框架包 symfony/symfony 包含所有组件并在 replaces 部分列出它们。同时安装框架包和单个组件会导致问题，而且是不可能的。但是由于那个条码包依赖于整个框架，而你自己的应用依赖于单个组件，所以无法继续安装。

如果你真的想使用这个包（可能有更好地构建它们的依赖关系的替代方案），你可以从你的 composer.json而是需要 symfony/symfony:4.3.*。之后，该软件包应该可以安装

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