如题，安装失败部分Terminal输出如下：

--> Finished Dependency Resolution
Error: Package: 1:enchant-1.6.0-8.el7.x86_64 (base)
Requires: libhunspell-1.3.so.0()(64bit)
Available: hunspell-1.3.2-16.el7.x86_64 (base)
libhunspell-1.3.so.0()(64bit)
Installing: hunspell-1.7.0-7.el7.x86_64 (appnode)
~libhunspell-1.7.so.0()(64bit)
You could try using --skip-broken to work around the problem
** Found 2 pre-existing rpmdb problem(s), 'yum check' output follows:
2:postfix-2.10.1-9.el7.x86_64 has missing requires of libmysqlclient.so.18()(64bit)
2:postfix-2.10.1-9.el7.x86_64 has missing requires of libmysqlclient.so.18(libmysqlclient_18)(64bit)
ERROR: install environment softwares failed: exit status 1

尝试手动指定版本安装，无效。