Laravel composer install挂起“安装依赖项”并占用大量资源（CPU，DISK）

Question

问题1：

我尝试在我的服务器上安装laravel 4（Ubuntu 12.04，nginx，php5-fpm），但安装挂起：

# composer install --verbose
Loading composer repositories with package information
Installing dependencies (including require-dev)

- 没有错误，没有任何错误，它只是挂起而且就是这样。 我尝试使用composer create-project laravel/laravel --prefer-dist进行安装 ......结果非常相似：

Installing laravel/laravel (v4.0.9)
- Installing laravel/laravel (v4.0.9)
Loading from cache

Created project in /var/www/laravel/ex2/laravel
Loading composer repositories with package information
Installing dependencies (including require-dev)

我找不到任何想法/解决方案。

有人可以告诉我这是什么问题，我该如何解决？

问题2：

@ antonio-carlos-ribeiro是对的，我只需要等待。但现在我又遇到了另一个问题：

安装需要30多分钟！而且很多资源（CPU和磁盘使用）......令人难以置信的资源量。 以下是CPU和DISK读/写的图表： 我想这不是正常行为。有什么想法发生了什么？

谢谢！

Answer 1

这是Composer很慢。 你需要等待它，是的，可能需要很长时间。

您也可以尝试逐个下载软件包，“手动”安装Laravel

创建目录并输入：

mkdir /var/www/laravel/ex2/laravel
cd /var/www/laravel/ex2/laravel

将所有包裹下载一个：

composer require filp/whoops 1.0.7
composer require nikic/php-parser dev-master#700847e
composer require jeremeamia/superclosure 1.0.1
composer require doctrine/lexer dev-master#bc0e1f0
composer require doctrine/annotations v1.1.2
composer require doctrine/collections dev-master#bcb5377
composer require doctrine/cache v1.3.0
composer require doctrine/inflector dev-master#8b4b3cc
composer require doctrine/common dev-master#d9dea98
composer require doctrine/dbal 2.4.x-dev#9efdbce
composer require psr/log 1.0.0
composer require monolog/monolog dev-master#a501075
composer require symfony/translation 2.3.x-dev#6aedcff
composer require symfony/routing 2.3.x-dev#7d41463
composer require symfony/process 2.3.x-dev#8289810
composer require symfony/debug 2.3.x-dev#085d4fd
composer require symfony/http-foundation 2.3.x-dev#796619f
composer require symfony/event-dispatcher 2.3.x-dev#2d8ece3
composer require symfony/http-kernel 2.3.x-dev#9795c9f
composer require symfony/finder 2.3.x-dev#a175521
composer require symfony/dom-crawler 2.3.x-dev#4dc2c59
composer require symfony/css-selector 2.3.x-dev#8df20c5
composer require symfony/console 2.3.x-dev#f880062
composer require symfony/browser-kit 2.3.x-dev#7fc66ea
composer require symfony/filesystem dev-master#e558fd5
composer require swiftmailer/swiftmailer v5.0.2
composer require predis/predis 0.8.x-dev#ff004ae
composer require patchwork/utf8 v1.1.14
composer require nesbot/carbon 1.4.0
composer require ircmaxell/password-compat 1.0.x-dev#1fc1521
composer require classpreloader/classpreloader 1.0.1

最后下载Laravel

composer require laravel/framework 4.0.x-dev
composer require laravel/laravel 4.0.x

将其移至正确的位置

mv -f vendor/laravel/laravel/* .
mv -f vendor/laravel/laravel/.g* .
rm -rf vendor/laravel/laravel

执行此操作以修复您的composer.lock

composer update

下载软件包后，Composer会将它们缓存在您的主文件夹中，因此下次安装时您不必手动下载所有软件包，当然，除非有些软件已更新。

注意：这仅适用于Laravel 4.0.9，因为其中一些软件包被“标记”以下载特定提交（例如：＃700847e）。

Answer 2

我在xampp目录下的Windows机器上安装它，发现它在Apache运行时被挂起，当我停止Apache时它会立即启动并以秒为单位结束。

Answer 3

确保默认情况下没有启用xdebug。如果有，请将其关闭。

我有类似的问题，加载JSON依赖关系需要一个小时（对于Laravel）。关闭xdebug for cli之后几秒内就会加载所有东西！

Answer 4

对我来说是作曲家的供应商。我做了composer -vvv update

Answer 5

一种可能性是您具有无法解决的依赖项：

您的要求无法解决为一组可安装的 包。

正如其他人所提到的，您可能只需要运行composer install并等待。如果无法解决依赖关系，则作曲者将扫描所有可能的选项-这可能需要很长时间。

如果您有很多依赖项，则可能要先尝试从composer.json中删除所有内容，然后一次将它们重新添加回去，以找出哪些项无法解决。

composer install最终完成时-请仔细阅读输出，并查看是否需要手动安装依赖项。

就我而言，我只是尝试安装一个软件包。这是我的composer.json：

{
    "require-dev": {
        "phpunit/phpunit": "^8"
}

composer install运行了很长时间，但最终报告：

  Problem 1
- phpunit/phpunit 8.5.2 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.5.1 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.5.0 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.4.3 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.4.2 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.4.1 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.4.0 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.3.5 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.3.4 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.3.3 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.3.2 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.3.1 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.3.0 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.2.5 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.2.4 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.2.3 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.2.2 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.2.1 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.2.0 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.1.6 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.1.5 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.1.4 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.1.3 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.1.2 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.1.1 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.1.0 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.0.6 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.0.5 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.0.4 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.0.3 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.0.2 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.0.1 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/phpunit 8.0.0 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- Installation request for phpunit/phpunit ^8 -> satisfiable by phpunit/phpunit[8.0.0, 8.0.1, 8.0.2, 8.0.3, 8.0.4, 8.0.5, 8.0.6, 8.1.0, 8.1.1, 8.1.2, 8.1.3, 8.1.4, 8.1.5, 8.1.6, 8.2.0, 8.2.1, 8.2.2, 8.2.3, 8.2.4, 8.2.5, 8.3.0, 8.3.1, 8.3.2, 8.3.3, 8.3.4, 8.3.5, 8.4.0, 8.4.1, 8.4.2, 8.4.3, 8.5.0, 8.5.1, 8.5.2].

所以我安装了缺少的依赖项-PHP扩展名dom：

sudo apt install php-dom

下次我运行composer install时，它成功完成了。

Answer 6

老问题，但我找到了新答案。

我的 php-cli 没有启用 php-curl 扩展。

安装并启用它就行了。