我想在Laravel 7.2中从现有数据库创建一个迁移。我在这个链接中找到了xethron/migrations生成器。当我尝试安装它时，我得到了这个错误：
Problem 1
- xethron/migrations-generator v2.0.0 requires way/generators dev-feature/laravel-five-stable -> no matching package found.
- Conclusion: remove laravel/framework v7.25.0
- Conclusion: don't install laravel/framework v7.25.0
- xethron/migrations-generator v2.0.1 requires xethron/laravel-4-generators ~3.1.0 -> satisfiable by xethron/laravel-4-generators[3.1.0, 3.1.1].
- xethron/migrations-generator v2.0.2 requires xethron/laravel-4-generators ~3.1.0 -> satisfiable by xethron/laravel-4-generators[3.1.0, 3.1.1].
- xethron/laravel-4-generators 3.1.0 requires illuminate/support ~5.0 -> satisfiable by illuminate/support[5.0.x-dev, 5.1.x-dev, 5.2.x-dev, 5.3.x-dev, 5.4.x-dev, 5.5.x-dev, 5.6.x-dev, 5.7.17, 5.7.18, 5.7.19, 5.7.x-dev, 5.8.x-dev, v5.0.0, v5.0.22, v5.0.25, v5.0.26, v5.0.28, v5.0.33, v5.0.4, v5.1.1, v5.1.13, v5.1.16, v5.1.2, v5.1.20, v5.1.22, v5.1.25, v5.1.28, v5.1.30, v5.1.31, v5.1.41, v5.1.6, v5.1.8, v5.2.0, v5.2.19, v5.2.21, v5.2.24, v5.2.25, v5.2.26, v5.2.27, v5.2.28, v5.2.31, v5.2.32, v5.2.37, v5.2.43, v5.2.45, v5.2.6, v5.2.7, v5.3.0, v5.3.16, v5.3.23, v5.3.4, v5.4.0, v5.4.13, v5.4.17, v5.4.19, v5.4.27, v5.4.36, v5.4.9, v5.5.0, v5.5.16, v5.5.17, v5.5.2, v5.5.28, v5.5.33, v5.5.34, v5.5.35, v5.5.36, v5.5.37, v5.5.39, v5.5.40, v5.5.41, v5.5.43, v5.5.44, v5.6.0, v5.6.1, v5.6.10, v5.6.11, v5.6.12, v5.6.13, v5.6.14, v5.6.15, v5.6.16, v5.6.17, v5.6.19, v5.6.2, v5.6.20, v5.6.21, v5.6.22, v5.6.23, v5.6.24, v5.6.25, v5.6.26, v5.6.27, v5.6.28, v5.6.29, v5.6.3, v5.6.30, v5.6.31, v5.6.32, v5.6.33, v5.6.34, v5.6.35, v5.6.36, v5.6.37, v5.6.38, v5.6.39, v5.6.4, v5.6.5, v5.6.6, v5.6.7, v5.6.8, v5.6.9, v5.7.0, v5.7.1, v5.7.10, v5.7.11, v5.7.15, v5.7.2, v5.7.20, v5.7.21, v5.7.22, v5.7.23, v5.7.26, v5.7.27, v5.7.28, v5.7.3, v5.7.4, v5.7.5, v5.7.6, v5.7.7, v5.7.8, v5.7.9, v5.8.0, v5.8.11, v5.8.12, v5.8.14, v5.8.15, v5.8.17, v5.8.18, v5.8.19, v5.8.2, v5.8.20, v5.8.22, v5.8.24, v5.8.27, v5.8.28, v5.8.29, v5.8.3, v5.8.30, v5.8.31, v5.8.32, v5.8.33, v5.8.34, v5.8.35, v5.8.36, v5.8.4, v5.8.8, v5.8.9].
- xethron/laravel-4-generators 3.1.1 requires illuminate/support ~5.0 -> satisfiable by illuminate/support[5.0.x-dev, 5.1.x-dev, 5.2.x-dev, 5.3.x-dev, 5.4.x-dev, 5.5.x-dev, 5.6.x-dev, 5.7.17, 5.7.18, 5.7.19, 5.7.x-dev, 5.8.x-dev, v5.0.0, v5.0.22, v5.0.25, v5.0.26, v5.0.28, v5.0.33, v5.0.4, v5.1.1, v5.1.13, v5.1.16, v5.1.2, v5.1.20, v5.1.22, v5.1.25, v5.1.28, v5.1.30, v5.1.31, v5.1.41, v5.1.6, v5.1.8, v5.2.0, v5.2.19, v5.2.21, v5.2.24, v5.2.25, v5.2.26, v5.2.27, v5.2.28, v5.2.31, v5.2.32, v5.2.37, v5.2.43, v5.2.45, v5.2.6, v5.2.7, v5.3.0, v5.3.16, v5.3.23, v5.3.4, v5.4.0, v5.4.13, v5.4.17, v5.4.19, v5.4.27, v5.4.36, v5.4.9, v5.5.0, v5.5.16, v5.5.17, v5.5.2, v5.5.28, v5.5.33, v5.5.34, v5.5.35, v5.5.36, v5.5.37, v5.5.39, v5.5.40, v5.5.41, v5.5.43, v5.5.44, v5.6.0, v5.6.1, v5.6.10, v5.6.11, v5.6.12, v5.6.13, v5.6.14, v5.6.15, v5.6.16, v5.6.17, v5.6.19, v5.6.2, v5.6.20, v5.6.21, v5.6.22, v5.6.23, v5.6.24, v5.6.25, v5.6.26, v5.6.27, v5.6.28, v5.6.29, v5.6.3, v5.6.30, v5.6.31, v5.6.32, v5.6.33, v5.6.34, v5.6.35, v5.6.36, v5.6.37, v5.6.38, v5.6.39, v5.6.4, v5.6.5, v5.6.6, v5.6.7, v5.6.8, v5.6.9, v5.7.0, v5.7.1, v5.7.10, v5.7.11, v5.7.15, v5.7.2, v5.7.20, v5.7.21, v5.7.22, v5.7.23, v5.7.26, v5.7.27, v5.7.28, v5.7.3, v5.7.4, v5.7.5, v5.7.6, v5.7.7, v5.7.8, v5.7.9, v5.8.0, v5.8.11, v5.8.12, v5.8.14, v5.8.15, v5.8.17, v5.8.18, v5.8.19, v5.8.2, v5.8.20, v5.8.22, v5.8.24, v5.8.27, v5.8.28, v5.8.29, v5.8.3, v5.8.30, v5.8.31, v5.8.32, v5.8.33, v5.8.34, v5.8.35, v5.8.36, v5.8.4, v5.8.8, v5.8.9].
- illuminate/support 5.2.x-dev conflicts with laravel/framework[v7.25.0].
- illuminate/support 5.3.x-dev conflicts with laravel/framework[v7.25.0].
- illuminate/support 5.4.x-dev conflicts with laravel/framework[v7.25.0].
- illuminate/support 5.5.x-dev conflicts with laravel/framework[v7.25.0].
- illuminate/support v5.2.43 conflicts with laravel/framework[v7.25.0].
- illuminate/support v5.2.45 conflicts with laravel/framework[v7.25.0].
- illuminate/support v5.3.0 conflicts with laravel/framework[v7.25.0].
- illuminate/support v5.3.16 conflicts with laravel/framework[v7.25.0].
- illuminate/support v5.3.23 conflicts with laravel/framework[v7.25.0].
- illuminate/support v5.3.4 conflicts with laravel/framework[v7.25.0].
- illuminate/support v5.4.0 conflicts with laravel/framework[v7.25.0].
- illuminate/support v5.4.13 conflicts with laravel/framework[v7.25.0].
- illuminate/support v5.4.17 conflicts with laravel/framework[v7.25.0].
...
我尝试了composer require --dev "kitloong/laravel-migrations-generator"，但也出现了类似的错误。
如您在https://packagist.org/packages/xethron/migrations-generator，这个包很旧，很可能与Laravel v7不兼容。
kitloong/laravel-migrations-generator是该软件包的一个分支，根据他们的发布说明，它应该可以运行到Laravel v8。要使它发挥作用，您必须先删除其他迁移生成器，然后只安装forked包。