最近在全新VPS上安装Appnode和php76，php80时出现错误，无法安装环境，与CentOS版本号无关。

错误如下

--> Finished Dependency Resolution
Error: Package: 1:enchant-1.6.0-8.el7.x86_64 (os)
           Requires: libhunspell-1.3.so.0()(64bit)
           Removing: hunspell-1.3.2-15.el7.x86_64 (@anaconda)
               libhunspell-1.3.so.0()(64bit)
           Updated By: hunspell-1.7.0-7.el7.x86_64 (appnode)
              ~libhunspell-1.7.so.0()(64bit)
           Available: hunspell-1.3.2-16.el7.x86_64 (os)
               libhunspell-1.3.so.0()(64bit)
 You could try using --skip-broken to work around the problem
** Found 3 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)
rdma-core-devel-51mlnx1-1.51066.x86_64 has missing requires of ibacm(x86-64) = ('0', '51mlnx1', '1.51066')
ERROR: install environment softwares failed: exit status 1

由于PHP8.0的enchant扩展（默认安装）依赖enchant2，会与PHP5/7的enchant扩展依赖的enchant1安装包冲突，因此暂时不支持PHP8与PHP5/7的enchant扩展并存。

如果用不到已安装的PHP5/7的enchant扩展，可将其卸载后再安装PHP8，也可不安装PHP8的enchant扩展。

https://bbs.appnode.com/thread-2542.htm

在安装时不必勾选php80，先安装php76或以下版本，后在安装php80时取消安装enchant扩展，即可解决问题。