title: yum missing requirement that is already installed
body: <p>I'm running rhel7.  When I try to yum install glibc, it looks like it's already installed:</p>
  
  <pre><code>yum install glibc
  Package matching glibc-2.17-260.el7_6.5.x86_64 already installed. Checking for update.
  </code></pre>
  
  <p>But when I thin try to install glibc-headers, it fails at the following error:</p>
  
  <pre><code>Error: Package: glibc-headers-2.17-260.el7_6.5.x86_64 (prod1)
         Requires: glibc = 2.17-260.el7_6.5
  </code></pre>
  
  <p>I've searched around and can't figure out what's going on.  I've clean installed glibc.  The closest I've come is to this: <a href="https://bugzilla.redhat.com/show_bug.cgi?id=1717626" rel="nofollow noreferrer">https://bugzilla.redhat.com/show_bug.cgi?id=1717626</a>, but the advice didn't help.</p>
  
  <p>How can I figure out the issue?  </p>