当我使用composer 2时，Heroku检测到composer 1

Question

当试图在Heroku中部署时，它返回以下错误：

 !     The following is the full output from the installation attempt:
 !     
 !     > You are using Composer 1 which is deprecated. You should upgrade to Composer 2, see https://blog.packagist.com/deprecating-composer-1-support/
 !     > Loading repositories with available runtimes and extensions
 !     > Updating dependencies
 !     > Your requirements could not be resolved to an installable set of packages.
 !     > 
 !     >   Problem 1
 !     >     - The requested package composer-plugin-api could not be found in any version, there may be a typo in the package name.
 !     > 

关于如何解决这个问题，没有太多的信息。否则，我应该如何指定使用composer 2？所有东西都是从composer 2安装的。

composer.json

{
    "autoload": {
        "psr-4": {
            "App\\": "app/"
        },
        "files": [
            "App/helpers.php"
        ]
    },
    "require": {
        "vlucas/phpdotenv": "^5.4",
        "abraham/twitteroauth": "^3.2",
        "jenssegers/blade": "^1.4",
        "bramus/router": "^1.6",
        "nesbot/carbon": "^2.55",
        "phpfastcache/phpfastcache": "*",
        "php": ">=8.0"
    }
}

作曲家-版本

Composer version 2.2.1 2021-12-22 22:21:31

Answer 1

问题是确切的作曲家版本，heroku和composer版本2.1.14 (https://devcenter.heroku.com/articles/php-support#installation-of-dependencies)一起工作，我的作曲家是2.2.1。

我用以下方法修正了这个问题：

删除composer.lock &供应商

composer self-update 2.1.14

composer install