php - 无法安装 Laravel OSX Catalina

Question

在旧版本上成功使用多年后尝试升级 Laravel 并升级到 OSX 10.15.2 (Catalina) 之后，我似乎无法再为 cli 安装 Laravel。

# php -v
PHP 7.2.24 (cli) (built: Oct 24 2019 13:01:07) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
    with Zend OPcache v7.2.24, Copyright (c) 1999-2018, by Zend Technologies

# composer --version
composer --version
Composer version 1.9.3 2020-02-04 12:58:49

# composer global require laravel/installer
Changed current directory to /Users/$username/.composer
Using version ^3.0 for laravel/installer
./composer.json has been updated
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
    - Conclusion: don't install laravel/installer v3.0.1
    - Conclusion: remove symfony/console v3.4.37
    - Installation request for laravel/installer ^3.0 -> satisfiable by laravel/installer[v3.0.0, v3.0.1].
    - Conclusion: don't install symfony/console v3.4.37
    - laravel/installer v3.0.0 requires symfony/console ^4.0|^5.0 -> satisfiable by symfony/console[v4.0.0, v4.0.1, v4.0.10, v4.0.11, v4.0.12, v4.0.13, v4.0.14, v4.0.15, v4.0.2, v4.0.3, v4.0.4, v4.0.5, v4.0.6, v4.0.7, v4.0.8, v4.0.9, v4.1.0, v4.1.1, v4.1.10, v4.1.11, v4.1.12, v4.1.2, v4.1.3, v4.1.4, v4.1.5, v4.1.6, v4.1.7, v4.1.8, v4.1.9, v4.2.0, v4.2.1, v4.2.10, v4.2.11, v4.2.12, v4.2.2, v4.2.3, v4.2.4, v4.2.5, v4.2.6, v4.2.7, v4.2.8, v4.2.9, v4.3.0, v4.3.1, v4.3.10, v4.3.11, v4.3.2, v4.3.3, v4.3.4, v4.3.5, v4.3.6, v4.3.7, v4.3.8, v4.3.9, v4.4.0, v4.4.1, v4.4.2, v4.4.3, v4.4.4, v5.0.0, v5.0.1, v5.0.2, v5.0.3, v5.0.4].
    - Can only install one of: symfony/console[v4.0.0, v3.4.37].
    - Can only install one of: symfony/console[v4.0.1, v3.4.37].
    - Can only install one of: symfony/console[v4.0.10, v3.4.37].
    - Can only install one of: symfony/console[v4.0.11, v3.4.37].
    - Can only install one of: symfony/console[v4.0.12, v3.4.37].
    - Can only install one of: symfony/console[v4.0.13, v3.4.37].
    - Can only install one of: symfony/console[v4.0.14, v3.4.37].
    - Can only install one of: symfony/console[v4.0.15, v3.4.37].
    - Can only install one of: symfony/console[v4.0.2, v3.4.37].
    - Can only install one of: symfony/console[v4.0.3, v3.4.37].
    - Can only install one of: symfony/console[v4.0.4, v3.4.37].
    - Can only install one of: symfony/console[v4.0.5, v3.4.37].
    - Can only install one of: symfony/console[v4.0.6, v3.4.37].
    - Can only install one of: symfony/console[v4.0.7, v3.4.37].
    - Can only install one of: symfony/console[v4.0.8, v3.4.37].
    - Can only install one of: symfony/console[v4.0.9, v3.4.37].
    - Can only install one of: symfony/console[v4.1.0, v3.4.37].
    - Can only install one of: symfony/console[v4.1.1, v3.4.37].
    - Can only install one of: symfony/console[v4.1.10, v3.4.37].
    - Can only install one of: symfony/console[v4.1.11, v3.4.37].
    - Can only install one of: symfony/console[v4.1.12, v3.4.37].
    - Can only install one of: symfony/console[v4.1.2, v3.4.37].
    - Can only install one of: symfony/console[v4.1.3, v3.4.37].
    - Can only install one of: symfony/console[v4.1.4, v3.4.37].
    - Can only install one of: symfony/console[v4.1.5, v3.4.37].
    - Can only install one of: symfony/console[v4.1.6, v3.4.37].
    - Can only install one of: symfony/console[v4.1.7, v3.4.37].
    - Can only install one of: symfony/console[v4.1.8, v3.4.37].
    - Can only install one of: symfony/console[v4.1.9, v3.4.37].
    - Can only install one of: symfony/console[v4.2.0, v3.4.37].
    - Can only install one of: symfony/console[v4.2.1, v3.4.37].
    - Can only install one of: symfony/console[v4.2.10, v3.4.37].
    - Can only install one of: symfony/console[v4.2.11, v3.4.37].
    - Can only install one of: symfony/console[v4.2.12, v3.4.37].
    - Can only install one of: symfony/console[v4.2.2, v3.4.37].
    - Can only install one of: symfony/console[v4.2.3, v3.4.37].
    - Can only install one of: symfony/console[v4.2.4, v3.4.37].
    - Can only install one of: symfony/console[v4.2.5, v3.4.37].
    - Can only install one of: symfony/console[v4.2.6, v3.4.37].
    - Can only install one of: symfony/console[v4.2.7, v3.4.37].
    - Can only install one of: symfony/console[v4.2.8, v3.4.37].
    - Can only install one of: symfony/console[v4.2.9, v3.4.37].
    - Can only install one of: symfony/console[v4.3.0, v3.4.37].
    - Can only install one of: symfony/console[v4.3.1, v3.4.37].
    - Can only install one of: symfony/console[v4.3.10, v3.4.37].
    - Can only install one of: symfony/console[v4.3.11, v3.4.37].
    - Can only install one of: symfony/console[v4.3.2, v3.4.37].
    - Can only install one of: symfony/console[v4.3.3, v3.4.37].
    - Can only install one of: symfony/console[v4.3.4, v3.4.37].
    - Can only install one of: symfony/console[v4.3.5, v3.4.37].
    - Can only install one of: symfony/console[v4.3.6, v3.4.37].
    - Can only install one of: symfony/console[v4.3.7, v3.4.37].
    - Can only install one of: symfony/console[v4.3.8, v3.4.37].
    - Can only install one of: symfony/console[v4.3.9, v3.4.37].
    - Can only install one of: symfony/console[v4.4.0, v3.4.37].
    - Can only install one of: symfony/console[v4.4.1, v3.4.37].
    - Can only install one of: symfony/console[v4.4.2, v3.4.37].
    - Can only install one of: symfony/console[v4.4.3, v3.4.37].
    - Can only install one of: symfony/console[v4.4.4, v3.4.37].
    - Can only install one of: symfony/console[v5.0.0, v3.4.37].
    - Can only install one of: symfony/console[v5.0.1, v3.4.37].
    - Can only install one of: symfony/console[v5.0.2, v3.4.37].
    - Can only install one of: symfony/console[v5.0.3, v3.4.37].
    - Can only install one of: symfony/console[v5.0.4, v3.4.37].
    - Installation request for symfony/console (locked at v3.4.37) -> satisfiable by symfony/console[v3.4.37].


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

我在这里和其他地方花了 2 天时间研究建议，但没有成功解决此问题。非常感谢任何建议。

Answer 1

经过一系列的随机尝试，我终于可以跑了:

composer global update

然后

composer global require laravel/installer

这似乎解决了问题。