The problem with older packaging managers in two lines ...

There was a post from the NetBSD oriented 'pkgsrc' project into the Scientific-Linux mailing list earlier this week. Lots of skilled geeks following their muse ... but From the #pkgsrc IRC channel ('nick' changed to protect the poster)

09:11 wxzy> Ugh. I think I should have chosen the X from pkgsrc.
09:11 wxyz> The one I have now lacks fonts that applications need.

Yeah. Package 'Managers' that unroll tarballs, but lack a strong Requirements / Dependency system are like that