我正在尝试按照此文档在 CentOS 7 上安装 Horde Groupware Webmail Edition 5，使用 Pear 安装 Horde并且安装在第 5 步时失败。
- 梨频道发现
- pear.horde.org pear 安装
- 部落/部落角色
- pear 运行脚本 horde/horde_role
- pear 安装 -a horde/webmail
我的错误：
[root@horde-test ~]# pear install -a horde/webmail
Unknown remote channel: phpseclib.sourceforge.net
Package "pear.horde.org/kronolith" dependency "pear.php.net/Date" has no releases
Package "pear.horde.org/kronolith" dependency "pear.php.net/Date_Holidays" has no releases
Package "pear.horde.org/Horde_Mail_Autoconfig" dependency "pear.php.net/Net_DNS2" has no releases
Package "pear.horde.org/Horde_Mapi" dependency "pear.php.net/Math_BigInteger" has no releases
horde/imp can optionally use package "channel://phpseclib.sourceforge.net/File_ASN1"
horde/kronolith requires package "pear/Date"
horde/kronolith can optionally use package "pear/Date_Holidays" (version >= 0.21.0, version <= 1.0.0alpha1, excluded versions: 1.0.0alpha1)
horde/webmail requires package "horde/kronolith" (version >= 4.2.23, version <= 5.0.0alpha1, excluded versions: 5.0.0alpha1)
horde/Horde_Mail_Autoconfig requires package "pear/Net_DNS2" (version >= 1.3.0)
horde/imp requires package "horde/Horde_Mail_Autoconfig" (version >= 1.0.0, version <= 2.0.0alpha1, excluded versions: 2.0.0alpha1)
horde/Horde_Mapi requires package "pear/Math_BigInteger" (version >= 1.0.2, version <= 2.0.0, excluded versions: 2.0.0)
horde/Horde_ActiveSync requires package "horde/Horde_Mapi" (version >= 1.0.0, version <= 2.0.0alpha1, excluded versions: 2.0.0alpha1)
No valid packages found
install failed
如果我尝试安装所需的软件包，则会出现此错误：
[root@horde-test ~]# pear install Net_DNS2
No releases available for package "pear.php.net/Net_DNS2"
install failed
知道发生什么事了吗？
谢谢你们