[R] ggplot2 will not install after system upgrade

[Jeff Trefftzs]

I just upgraded my laptop from Fedora Core 20 to Fedora Core 22, and
after the upgrade R can no longer use the ggplot2 library.  The
principal complaint seems to be that libicui18n.so.50 is not found. The
version of libicu that is installed is version 54.  On the other hand,
the same environment exists on my desktop computer, also with version
54 of libicu and all works just fine.  
Any hints?  Has anyone else seen this?

Thanks,

-- 
Jeff Trefftzs
http://www.trefftzs.org