qt related pkg upgrade problem

[Andriy Gapon]

I tried the following today with the latest FreeBSD packages (FreeBSD:12:amd64):

# pkg upgrade
...
Checking integrity... done (7 conflicting)
 - qtchooser-39 [FreeBSD] conflicts with qt4-linguisttools-4.8.7 [installed] on
/usr/local/bin/lconvert
...
Conflicts with the existing packages have been found.
One more solver iteration is needed to resolve them.
The following 178 package(s) will be affected (of 0 checked):
...
Number of packages to be installed: 1
Number of packages to be upgraded: 107
Number of packages to be reinstalled: 56
The process will require 50 MiB more space.
Proceed with this action? [y/N]: y
[1/178] Installing qtchooser-39...
pkg: qtchooser-39 conflicts with qt4-linguisttools-4.8.7 (installs files into
the same place).  Problematic file: /usr/local/bin/lconvert


I thought that that "one more solver iteration" resolved this.
Shouldn't pkg first upgrade or remove the installed conflicting packages before
trying to install qtchooser?
I read UPDATING, it mentioned the big Qt change, but it didn't have any special
upgrade instructions...

How can I proceed from here?
Thank you!
-- 
Andriy Gapon