title: "Nothing to do" when installing mysql devel
body: <p>I'm using CentOS 6.4 and trying to install mysql-devel by "yum"
  It cannot be installed and there is no error message. I can use "yum search" to find a package but cannot install it.</p>
  
  <pre><code>/home/centos64/ce-installer:sudo yum install MySQL51-devel.x86_64
  Loaded plugins: fastestmirror
  Loading mirror speeds from cached hostfile
  epel/metalink
  epel-debuginfo/metalink
  epel-source/metalink
   * epel: mirrors.ptd.net
   * epel-debuginfo: mirrors.servercentral.net
   * epel-source: mirrors.servercentral.net
   * webtatic: us-east.repo.webtatic.com
  base
  centosplus
  epel-debuginfo
  epel-source
  extras
  updates
  webtatic
  Setting up Install Process
  Nothing to do
  </code></pre>
  
  <p>Thanks.</p>