Installation from packages.zendframework.com fails / URL redirection problem

[cweiske]

$ pyrus install packages.zendframework.com/zend_mail
Downloading packages.zendframework.com/Zend_Mail
Pyrus\Package\Exception: Invalid abstract package packages.zendframework.com/Zend_Mail
 Pyrus\Package\Exception: Could not download from "http://packages.zendframework.com/get/Zend_Mail-2.0.3.phar"
  Pyrus\Package\Exception: Download failed, received 301
   Pyrus\Package\Exception: Could not download from "http://packages.zendframework.com/get/Zend_Mail-2.0.3.tgz"
    Pyrus\Package\Exception: Download failed, received 301
     Pyrus\Package\Exception: Could not download from "http://packages.zendframework.com/get/Zend_Mail-2.0.3.tar"
      Pyrus\Package\Exception: Download failed, received 301
       Pyrus\Package\Exception: Could not download from "http://packages.zendframework.com/get/Zend_Mail-2.0.3.zip"
        Pyrus\Package\Exception: Download failed, received 301

The HTTP URLs redirect to their HTTPS counterparts, and that Pyrus does not follow.