假设我有一个 Symfony v4.4 (Flex) 项目，其中包含以下块composer.json：
"extra": {
"symfony": {
"allow-contrib": false,
"require": "4.4.*"
}
}
正如预期的那样，它限制了 Symfony 核心包以坚持使用该v4.4版本。
symfony/monolog-bridge包尊重它，所以你不能安装symfony/monolog-bridge ~4.3.0或^5.0.
但是您可以安装symfony/monolog-bundle ~3.5.0，这也是意料之中的，因为它只是一个捆绑包，不是核心 Symfony 框架的一部分，并且有自己的独立发布和版本控制周期。
我无法理解的是什么有助于作曲家区分，哪些包是 Symfony 核心包，因此extra.symfony.require应用了限制，哪些不是？
我最初认为这是作曲家的type属性使之成为可能，但我找不到symfony-bridge任何独特的类型痕迹。如果是这样 - 指向源代码或文档的链接将非常有帮助。
更新：
默认的 Symfony (with Flex) v4.4 composer.json:
{
"name": "symfony/website-skeleton",
"type": "project",
"license": "MIT",
"description": "A skeleton to start a new Symfony website",
"require": {
"php": "^7.1.3",
"ext-ctype": "*",
"ext-iconv": "*",
"sensio/framework-extra-bundle": "^5.1",
"symfony/asset": "*",
"symfony/console": "*",
"symfony/dotenv": "*",
"symfony/expression-language": "*",
"symfony/flex": "^1.3.1",
"symfony/form": "*",
"symfony/framework-bundle": "*",
"symfony/http-client": "*",
"symfony/intl": "*",
"symfony/mailer": "*",
"symfony/monolog-bundle": "^3.1",
"symfony/orm-pack": "*",
"symfony/process": "*",
"symfony/security-bundle": "*",
"symfony/serializer-pack": "*",
"symfony/translation": "*",
"symfony/twig-pack": "*",
"symfony/validator": "*",
"symfony/web-link": "*",
"symfony/yaml": "*"
},
"require-dev": {
"symfony/debug-pack": "*",
"symfony/maker-bundle": "^1.0",
"symfony/profiler-pack": "*",
"symfony/test-pack": "*"
},
"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"
},
"post-install-cmd": [
"@auto-scripts"
],
"post-update-cmd": [
"@auto-scripts"
]
},
"conflict": {
"symfony/symfony": "*"
},
"extra": {
"symfony": {
"allow-contrib": false,
"require": "4.4.*"
}
}
}
现在如果你添加"symfony/monolog-bridge": "^5.0"依赖，composer update你会得到
$ composer update
Loading composer repositories with package information
Updating dependencies (including require-dev)
Restricting packages listed in "symfony/symfony" to "4.4.*"
Your requirements could not be resolved to an installable set of packages.
Problem 1
- The requested package symfony/monolog-bridge ^5.0 exists as symfony/monolog-bridge[4.4.x-dev, v4.4.0, v4.4.0-BETA1, v4.4.0-BETA2, v4.4.0-RC1, v4.4.1] but these are rejected by your constraint.
Problem 2
- symfony/monolog-bundle v3.5.0 requires symfony/monolog-bridge ~3.4 || ~4.0 || ^5.0 -> satisfiable by symfony/monolog-bridge[4.4.x-dev, v4.4.0, v4.4.0-BETA1, v4.4.0-BETA2, v4.4.0-RC1, v4.4.1] but these conflict with your requirements or minimum-stability.
- symfony/monolog-bundle v3.5.0 requires symfony/monolog-bridge ~3.4 || ~4.0 || ^5.0 -> satisfiable by symfony/monolog-bridge[4.4.x-dev, v4.4.0, v4.4.0-BETA1, v4.4.0-BETA2, v4.4.0-RC1, v4.4.1] but these conflict with your requirements or minimum-stability.
- symfony/monolog-bundle v3.4.0 requires symfony/monolog-bridge ~3.4|~4.0 -> satisfiable by symfony/monolog-bridge[4.4.x-dev, v4.4.0, v4.4.0-BETA1, v4.4.0-BETA2, v4.4.0-RC1, v4.4.1] but these conflict with your requirements or minimum-stability.
- symfony/monolog-bundle v3.3.1 requires symfony/monolog-bridge ~2.7|~3.3|~4.0 -> satisfiable by symfony/monolog-bridge[4.4.x-dev, v4.4.0, v4.4.0-BETA1, v4.4.0-BETA2, v4.4.0-RC1, v4.4.1] but these conflict with your requirements or minimum-stability.
- symfony/monolog-bundle v3.3.0 requires symfony/monolog-bridge ~2.7|~3.3|~4.0 -> satisfiable by symfony/monolog-bridge[4.4.x-dev, v4.4.0, v4.4.0-BETA1, v4.4.0-BETA2, v4.4.0-RC1, v4.4.1] but these conflict with your requirements or minimum-stability.
- symfony/monolog-bundle v3.2.0 requires symfony/monolog-bridge ~2.7|~3.0|~4.0 -> satisfiable by symfony/monolog-bridge[4.4.x-dev, v4.4.0, v4.4.0-BETA1, v4.4.0-BETA2, v4.4.0-RC1, v4.4.1] but these conflict with your requirements or minimum-stability.
- symfony/monolog-bundle v3.1.2 requires symfony/monolog-bridge ~2.7|~3.0|~4.0 -> satisfiable by symfony/monolog-bridge[4.4.x-dev, v4.4.0, v4.4.0-BETA1, v4.4.0-BETA2, v4.4.0-RC1, v4.4.1] but these conflict with your requirements or minimum-stability.
- symfony/monolog-bundle v3.1.1 requires symfony/monolog-bridge ~2.7|~3.0|~4.0 -> satisfiable by symfony/monolog-bridge[4.4.x-dev, v4.4.0, v4.4.0-BETA1, v4.4.0-BETA2, v4.4.0-RC1, v4.4.1] but these conflict with your requirements or minimum-stability.
- symfony/monolog-bundle v3.1.0 requires symfony/monolog-bridge ~2.7|~3.0 -> no matching package found.
- Installation request for symfony/monolog-bundle ^3.1 -> satisfiable by symfony/monolog-bundle[v3.1.0, v3.1.1, v3.1.2, v3.2.0, v3.3.0, v3.3.1, v3.4.0, v3.5.0].
Potential causes:
- A typo in the package name
- The package is not available in a stable-enough version according to your minimum-stability setting
see <https://getcomposer.org/doc/04-schema.md#minimum-stability> for more details.
- It's a private package and you forgot to add a custom repository to find it
Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.
问题仍然存在 - symfony 如何知道该软件包应受 v4.4 限制