无法在 Symfony 5.1 中安装 orm-pack

Question

我尝试在 Symfony 5.1 项目中安装 Doctrine ORM，但出现以下错误：

composer require symfony/orm-pack

Using version ^1.1 for symfony/orm-pack

./composer.json has been updated

Loading composer repositories with package information

Updating dependencies (including require-dev)

Restricting packages listed in "symfony/symfony" to "5.1.*"

Your requirements could not be resolved to an installable set of packages.

  Problem 1

    - doctrine/doctrine-migrations-bundle v2.0.0 requires symfony/framework-bundle ~3.4|~4.0 -> no matching package found.

    - Installation request for symfony/orm-pack ^1.1 -> satisfiable by symfony/orm-pack[v1.1.0].

    - Conclusion: remove doctrine/doctrine-migrations-bundle 3.0.1

    - Conclusion: don't install doctrine/doctrine-migrations-bundle 3.0.1

    - symfony/orm-pack v1.1.0 requires doctrine/doctrine-migrations-bundle ^2 -> satisfiable by doctrine/doctrine-migrations-bundle[2.1.0, 2.1.1, 2.1.2, v2.0.0].

    - Can only install one of: doctrine/doctrine-migrations-bundle[2.1.0, 3.0.1].

    - Can only install one of: doctrine/doctrine-migrations-bundle[2.1.1, 3.0.1].

    - Can only install one of: doctrine/doctrine-migrations-bundle[2.1.2, 3.0.1].

    - Installation request for doctrine/doctrine-migrations-bundle (locked at 3.0.1) -> satisfiable by doctrine/doctrine-migrations-bundle[3.0.1].

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.

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

我需要什么版本才能在 Symfony 5.1 中使用 Doctrine？我尝试过安装

composer req doctrine/doctrine-migrations-bundle:2.0

composer require symfony/orm-pack:1.1

但两者都失败了。

Answer 1

已经存在一些关于此的问题，请参阅https://github.com/symfony/orm-pack/issues/18或https://github.com/symfony/orm-pack/issues/29&nbsp;- 问题：自上次发布以来，ORM 包需要 Doctrine v2。根据您提供的软件包列表，您doctrine/doctrine-migrations-bundle 3.0.1之前需要。有两种可能的解决方案：要么将doctrine/doctrine-migrations-bundle其他与 Doctrine 相关的包降级到 v2，直到错误消息消失，要么跳过 ORM 包并需要在该包中编写的包。symfony/orm-pack如果您已经安装了迁移包，则额外安装没有任何好处

Answer 2

对于任何在尝试 require 时遇到“无法解析版本约束 orm-packorm-pack ”错误的人，这是关键，然后运行：composer require ormhttps://github.com/symfony/flex/issues/820#issuecomment-942016309