Description of problem:
attempting to upgrade this system produced conflict messages (see below)

Version-Release number of selected component (if applicable):
see below

How reproducible:
always

Steps to Reproduce:
1.see below
2.
3.

Actual results:
see below

Expected results:
successful and clean system upgrade

Additional info:

dnf -y --best upgrade tex-preview.noarch
Last metadata expiration check: 0:00:17 ago on Sat 03 Feb 2018 11:13:30 AM PST.
Dependencies resolved.
=============================================================================================================================================
 Package                             Arch                          Version                              Repository                      Size
=============================================================================================================================================
Upgrading:
 emacs-auctex                        noarch                        12.1-1.fc28                          rawhide                        1.0 M
 tex-preview                         noarch                        12.1-1.fc28                          rawhide                         69 k

Transaction Summary
=============================================================================================================================================
Upgrade  2 Packages

Total size: 1.1 M
Downloading Packages:
[SKIPPED] tex-preview-12.1-1.fc28.noarch.rpm: Already downloaded                                                                            
[SKIPPED] emacs-auctex-12.1-1.fc28.noarch.rpm: Already downloaded                                                                           
Running transaction check
Transaction check succeeded.
Running transaction test
The downloaded packages were saved in cache until the next successful transaction.
You can remove cached packages by executing 'dnf clean packages'.
Error: Transaction check error:
  file /usr/share/texlive/texmf-dist/tex/latex/preview/preview.sty from install of tex-preview-12.1-1.fc28.noarch conflicts with file from package texlive-preview-6:svn38865-39.fc28.noarch

Error Summary
-------------