我是Symfony的新手，我想我会按照他们的指示去做(http://symfony.com/doc/current/book/installation.html)使用Symfony安装和配置新项目。
我选择了"在没有安装程序的情况下创建Symfony应用程序"选项，并使用composer创建了一个新项目：
composer create-project symfony/framework-standard-edition my_project_name
我严格遵循了其余的说明，启动并运行了我的应用程序。到目前为止还不错。现在，我想按照他们的建议，使用DoctrineMigrationsBundle安装数据库迁移(http://symfony.com/doc/current/bundles/DoctrineMigrationsBundle/index.html)。这就是事情变得棘手的地方。
他们的页面顶部写着"2.1版本"，没有其他版本可供选择。我想这意味着这些说明是针对Symfon2.1的。我继续运行列出的命令。我的意思是，基本的安装过程可以改变多少？
composer require doctrine/doctrine-migrations-bundle "^1.0"
这导致了composer告诉我它无法解决需求（见下文）以及我挂断电话的地方出现了一大堆错误。我试着安装了几个其他版本的捆绑包和其他组件，并在谷歌上搜索了这个问题，但什么也找不到。
./composer.json has been updated
正在加载包含包信息的composer存储库更新依赖项（包括require-dev）无法将您的要求解析为一组可安装的程序包。
Problem 1
- Conclusion: remove symfony/symfony v3.0.0
- Conclusion: don't install symfony/symfony v3.0.0
- doctrine/doctrine-migrations-bundle 1.0.1 requires doctrine/migrations ~1.0@dev -> satisfiable by doctrine/migrations[v1.0.0, v1.1.0].
- doctrine/doctrine-migrations-bundle 1.1.1 requires doctrine/migrations ~1.0 -> satisfiable by doctrine/migrations[v1.0.0, v1.1.0].
- doctrine/doctrine-migrations-bundle v1.1.0 requires doctrine/migrations ~1.0 -> satisfiable by doctrine/migrations[v1.0.0, v1.1.0].
- doctrine/migrations v1.0.0 requires symfony/console ~2.3 -> satisfiable by symfony/console[v2.3.0, v2.3.1, v2.3.10, v2.3.11, v2.3.12, v2.3.13, v2.3.14, v2.3.15, v2.3.16, v2.3.17, v2.3.18, v2.3.19, v2.3.2, v2.3.20, v2.3.21, v2.3.22, v2.3.23, v2.3.24, v2.3.25, v2.3.26, v2.3.27, v2.3.28, v2.3.29, v2.3.3, v2.3.30, v2.3.31, v2.3.32, v2.3.33, v2.3.34, v2.3.35, v2.3.4, v2.3.5, v2.3.6, v2.3.7, v2.3.8, v2.3.9, v2.4.0, v2.4.1, v2.4.10, v2.4.2, v2.4.3, v2.4.4, v2.4.5, v2.4.6, v2.4.7, v2.4.8, v2.4.9, v2.5.0, v2.5.1, v2.5.10, v2.5.11, v2.5.12, v2.5.2, v2.5.3, v2.5.4, v2.5.5, v2.5.6, v2.5.7, v2.5.8, v2.5.9, v2.6.0, v2.6.1, v2.6.10, v2.6.11, v2.6.12, v2.6.2, v2.6.3, v2.6.4, v2.6.5, v2.6.6, v2.6.7, v2.6.8, v2.6.9, v2.7.0, v2.7.1, v2.7.2, v2.7.3, v2.7.4, v2.7.5, v2.7.6, v2.7.7, v2.8.0].
- doctrine/migrations v1.1.0 requires symfony/console ~2.3 -> satisfiable by symfony/console[v2.3.0, v2.3.1, v2.3.10, v2.3.11, v2.3.12, v2.3.13, v2.3.14, v2.3.15, v2.3.16, v2.3.17, v2.3.18, v2.3.19, v2.3.2, v2.3.20, v2.3.21, v2.3.22, v2.3.23, v2.3.24, v2.3.25, v2.3.26, v2.3.27, v2.3.28, v2.3.29, v2.3.3, v2.3.30, v2.3.31, v2.3.32, v2.3.33, v2.3.34, v2.3.35, v2.3.4, v2.3.5, v2.3.6, v2.3.7, v2.3.8, v2.3.9, v2.4.0, v2.4.1, v2.4.10, v2.4.2, v2.4.3, v2.4.4, v2.4.5, v2.4.6, v2.4.7, v2.4.8, v2.4.9, v2.5.0, v2.5.1, v2.5.10, v2.5.11, v2.5.12, v2.5.2, v2.5.3, v2.5.4, v2.5.5, v2.5.6, v2.5.7, v2.5.8, v2.5.9, v2.6.0, v2.6.1, v2.6.10, v2.6.11, v2.6.12, v2.6.2, v2.6.3, v2.6.4, v2.6.5, v2.6.6, v2.6.7, v2.6.8, v2.6.9, v2.7.0, v2.7.1, v2.7.2, v2.7.3, v2.7.4, v2.7.5, v2.7.6, v2.7.7, v2.8.0].
- doctrine/doctrine-migrations-bundle 1.0.0 requires symfony/framework-bundle ~2.1 -> satisfiable by symfony/framework-bundle[v2.1.0, v2.1.1, v2.1.10, v2.1.11, v2.1.12, v2.1.13, v2.1.2, v2.1.3, v2.1.4, v2.1.5, v2.1.6, v2.1.7, v2.1.8, v2.1.9, v2.2.0, v2.2.1, v2.2.10, v2.2.11, v2.2.2, v2.2.3, v2.2.4, v2.2.5, v2.2.6, v2.2.7, v2.2.8, v2.2.9, v2.3.0, v2.3.1, v2.3.10, v2.3.11, v2.3.12, v2.3.13, v2.3.14, v2.3.15, v2.3.16, v2.3.17, v2.3.18, v2.3.19, v2.3.2, v2.3.20, v2.3.21, v2.3.22, v2.3.23, v2.3.24, v2.3.25, v2.3.26, v2.3.27, v2.3.28, v2.3.29, v2.3.3, v2.3.30, v2.3.31, v2.3.32, v2.3.33, v2.3.34, v2.3.35, v2.3.4, v2.3.5, v2.3.6, v2.3.7, v2.3.8, v2.3.9, v2.4.0, v2.4.1, v2.4.10, v2.4.2, v2.4.3, v2.4.4, v2.4.5, v2.4.6, v2.4.7, v2.4.8, v2.4.9, v2.5.0, v2.5.1, v2.5.10, v2.5.11, v2.5.12, v2.5.2, v2.5.3, v2.5.4, v2.5.5, v2.5.6, v2.5.7, v2.5.8, v2.5.9, v2.6.0, v2.6.1, v2.6.10, v2.6.11, v2.6.12, v2.6.2, v2.6.3, v2.6.4, v2.6.5, v2.6.6, v2.6.7, v2.6.8, v2.6.9, v2.7.0, v2.7.1, v2.7.2, v2.7.3, v2.7.4, v2.7.5, v2.7.6, v2.7.7, v2.8.0].
- don't install symfony/console v2.5.0|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.5.1|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.5.10|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.5.11|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.5.12|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.5.2|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.5.3|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.5.4|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.5.5|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.5.6|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.5.7|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.5.8|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.5.9|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.6.0|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.6.1|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.6.10|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.6.11|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.6.12|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.6.2|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.6.3|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.6.4|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.6.5|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.6.6|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.6.7|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.6.8|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.6.9|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.7.0|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.7.1|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.7.2|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.7.3|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.7.4|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.7.5|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.7.6|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.7.7|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.8.0|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.0|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.1|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.10|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.11|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.12|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.13|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.14|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.15|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.16|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.17|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.18|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.19|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.2|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.20|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.21|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.22|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.23|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.24|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.25|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.26|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.27|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.28|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.29|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.3|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.30|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.31|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.32|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.33|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.34|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.35|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.4|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.5|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.6|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.7|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.8|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.3.9|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.4.0|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.4.1|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.4.10|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.4.2|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.4.3|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.4.4|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.4.5|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.4.6|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.4.7|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.4.8|don't install symfony/symfony v3.0.0
- don't install symfony/console v2.4.9|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.0|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.1|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.10|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.11|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.12|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.13|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.14|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.15|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.16|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.17|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.18|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.19|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.2|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.20|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.21|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.22|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.23|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.24|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.25|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.26|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.27|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.28|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.29|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.3|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.30|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.31|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.32|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.33|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.34|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.35|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.4|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.5|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.6|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.7|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.8|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.3.9|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.4.0|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.4.1|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.4.10|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.4.2|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.4.3|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.4.4|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.4.5|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.4.6|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.4.7|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.4.8|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.4.9|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.5.0|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.5.1|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.5.10|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.5.11|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.5.12|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.5.2|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.5.3|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.5.4|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.5.5|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.5.6|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.5.7|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.5.8|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.5.9|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.6.0|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.6.1|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.6.10|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.6.11|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.6.12|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.6.2|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.6.3|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.6.4|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.6.5|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.6.6|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.6.7|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.6.8|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.6.9|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.7.0|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.7.1|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.7.2|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.7.3|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.7.4|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.7.5|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.7.6|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.7.7|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.8.0|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.1.0|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.1.1|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.1.10|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.1.11|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.1.12|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.1.13|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.1.2|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.1.3|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.1.4|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.1.5|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.1.6|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.1.7|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.1.8|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.1.9|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.2.0|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.2.1|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.2.10|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.2.11|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.2.2|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.2.3|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.2.4|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.2.5|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.2.6|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.2.7|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.2.8|don't install symfony/symfony v3.0.0
- don't install symfony/framework-bundle v2.2.9|don't install symfony/symfony v3.0.0
- Installation request for symfony/symfony 3.0.* -> satisfiable by symfony/symfony[v3.0.0].
- Installation request for doctrine/doctrine-migrations-bundle ^1.0 -> satisfiable by doctrine/doctrine-migrations-bundle[1.0.0, 1.0.1, 1.1.1, v1.1.0].
很抱歉输出不好，但天哪，我不知道如何正确格式化：/
顺便说一句，如果能把我推向正确的方向——如何用Symfony3安装DoctrineMigrationsBundle，那就太棒了。
也许它还不兼容？
迁移捆绑包需要条令/迁移。
条令迁移需要symfont 2.*组件（例如yml阅读器），请参阅最新的composer.json
你需要symfony 3.*开关需要yml重新阅读器版本3.*
冲突无法解决。
如果你阅读输出，你会看到同样的结果。
开发版本支持Symfony 3。
添加到composer.json
至根：
"minimum-stability": "dev",
"prefer-stable": true,
至require:
"doctrine/doctrine-migrations-bundle": "dev-master"
并运行composer update