无法使用作曲家安装 wp-cli

Question

尝试全局安装 wp-cli - 但它不起作用：

 $ composer global require wp-cli/wp-cli
Changed current directory to /home/self/.composer
Using version ^1.0 for wp-cli/wp-cli
./composer.json has been created
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Installation request for wp-cli/wp-cli ^1.0 -> satisfiable by wp-cli/wp-cli[v1.0.0].
    - Conclusion: remove symfony/console v3.0.2
    - Conclusion: don't install symfony/console v3.0.2
    - wp-cli/wp-cli v1.0.0 requires symfony/console ~2.7 -> satisfiable by symfony/console[v2.7.0, v2.7.1, v2.7.10, v2.7.11, v2.7.12, v2.7.13, v2.7.14, v2.7.15, v2.7.16, v2.7.17, v2.7.18, v2.7.19, v2.7.2, v2.7.20, v2.7.21, v2.7.22, v2.7.3, v2.7.4, v2.7.5, v2.7.6, v2.7.7, v2.7.8, v2.7.9, v2.8.0, v2.8.1, v2.8.10, v2.8.11, v2.8.12, v2.8.13, v2.8.14, v2.8.15, v2.8.2, v2.8.3, v2.8.4, v2.8.5, v2.8.6, v2.8.7, v2.8.8, v2.8.9].
    - Can only install one of: symfony/console[v2.7.0, v3.0.2].
    ...
    - Can only install one of: symfony/console[v2.8.9, v3.0.2].
    - Installation request for symfony/console (locked at v3.0.2) -> satisfiable by symfony/console[v3.0.2].


Installation failed, deleting ./composer.json.

编辑

composer global 为什么选择 symfony/console

Changed current directory to /home/self/.composer
consolidation/annotated-command  2.2.2   requires  symfony/console (^2.8|~3)    
consolidation/log                1.0.3   requires  symfony/console (~2.5|~3.0)  
consolidation/output-formatters  3.1.5   requires  symfony/console (~2.5|~3.0)  
consolidation/robo               1.0.5   requires  symfony/console (~2.8|~3.0)  
laravel/installer                v1.3.1  requires  symfony/console (~2.3|~3.0)  
victorjonsson/markdowndocs       1.3.7   requires  symfony/console (>=2.6) 

Answer 1

Composer 中有一个很酷的命令：composer why

我邀请您提供composer why symfony/console 的结果。不知何故将其锁定到特定版本（3.0.2），但 WP 的目标是旧版本...

如果您的工具有冲突，您需要看看将 wp-cli 更改为 symfony/console 3 时会发生什么，然后在 wp-cli 上创建 PR。如果需要，我可以指导您完成此过程。

Answer 2

我能够通过删除全局 composer.lock 并运行 composer global install 来解决问题