Silvestripe 4.4 无法安装omnipay/paypal

Question

使用 silverstripe 4.4 和 silvershop，我尝试了一百种变体来安装 omnipay/paypal 和 composer。

无论我尝试什么都无法安装。

有人使用 ss4.4 吗？

怎么了？

Answer 1

根据您的错误消息，您缺少包 php-http/client-implementation。

如果你从Packagist 快速浏览一下，你会发现这个包实际上是一个虚拟包，所以你需要一个将自己定义为php-http/client-implementation 的包，因为它不是一个真正的包裹，你必须选择一个。

如果你不知道该选哪个，也许从Packagist中选择第一个。
对于它的价值，我过去对guzzle包的印象非常好，所以我会说这是一个安全的赌注。

所以你可以通过这样做来解决你的问题

composer require php-http/guzzle6-adapter

然后运行

composer require omnipay/paypal

或者你甚至可以一次性完成：

$ composer require php-http/guzzle6-adapter omnipay/paypal
composer require php-http/guzzle6-adapter omnipay/paypal
Using version ^2.0 for php-http/guzzle6-adapter
Using version ^3.0 for omnipay/paypal
./composer.json has been created
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 21 installs, 0 updates, 0 removals
  - Installing php-http/promise (v1.0.0): Downloading (100%)         
  - Installing psr/http-message (1.0.1): Downloading (100%)         
  - Installing psr/http-client (1.0.0): Downloading (100%)         
  - Installing php-http/httplug (v2.0.0): Downloading (100%)         
  - Installing moneyphp/money (v3.2.1): Downloading (100%)         
  - Installing symfony/polyfill-mbstring (v1.12.0): Downloading (100%)         
  - Installing symfony/polyfill-php72 (v1.12.0): Downloading (100%)         
  - Installing symfony/polyfill-intl-idn (v1.12.0): Downloading (100%)         
  - Installing symfony/mime (v4.3.3): Downloading (100%)         
  - Installing symfony/http-foundation (v4.3.3): Downloading (100%)         
  - Installing php-http/discovery (1.7.0): Downloading (100%)         
  - Installing clue/stream-filter (v1.4.1): Downloading (100%)         
  - Installing php-http/message-factory (v1.0.2): Downloading (100%)         
  - Installing php-http/message (1.8.0): Downloading (100%)         
  - Installing guzzlehttp/promises (v1.3.1): Downloading (100%)         
  - Installing ralouphie/getallheaders (3.0.3): Downloading (100%)         
  - Installing guzzlehttp/psr7 (1.6.1): Downloading (100%)         
  - Installing guzzlehttp/guzzle (6.3.3): Downloading (100%)         
  - Installing php-http/guzzle6-adapter (v2.0.1): Downloading (100%)         
  - Installing omnipay/common (v3.0.2): Downloading (100%)         
  - Installing omnipay/paypal (v3.0.2): Downloading (100%)         
moneyphp/money suggests installing ext-bcmath (Calculate without integer limits)
moneyphp/money suggests installing ext-gmp (Calculate without integer limits)
moneyphp/money suggests installing ext-intl (Format Money objects with intl)
moneyphp/money suggests installing florianv/swap (Exchange rates library for PHP)
moneyphp/money suggests installing florianv/exchanger (Exchange rates library for PHP)
moneyphp/money suggests installing psr/cache-implementation (Used for Currency caching)
symfony/polyfill-intl-idn suggests installing ext-intl (For best performance)
php-http/discovery suggests installing puli/composer-plugin (Sets up Puli which is recommended for Discovery to work. Check http://docs.php-http.org/en/latest/discovery.html for more details.)
php-http/message suggests installing zendframework/zend-diactoros (Used with Diactoros Factories)
php-http/message suggests installing slim/slim (Used with Slim Framework PSR-7 implementation)
guzzlehttp/psr7 suggests installing zendframework/zend-httphandlerrunner (Emit PSR-7 responses)
guzzlehttp/guzzle suggests installing psr/log (Required for using the Log middleware)
omnipay/common suggests installing league/omnipay (The default Omnipay package provides a default HTTP Adapter.)
Writing lock file
Generating autoload files

更多关于虚拟包的信息：

• https://github.com/php-http/guzzle6-adapter/blob/4b491b78e1b24ca941e6ca925f48a63e6a2d9a45/composer.json#L29
• https://github.com/php-http/guzzle6-adapter/blob/4b491b78e1b24ca941e6ca925f48a63e6a2d9a45/composer.json#L29
• https://stackoverflow.com/a/43489529/2123530