I get the following lines in thinlinc-install.log when upgrading to the nightly build on a Fedora 32 machine:
> 2020-10-23 15:42:34,083: Checking 'thinlinc-tlmisc-4.12.0post-6634.r35550.x86_64.rpm'...
> 2020-10-23 15:42:34,113: Failed to get information about package 'thinlinc-rdesktop':
> 2020-10-23 15:42:34,113: package thinlinc-rdesktop is not installed
> 2020-10-23 15:42:34,159: Checking 'thinlinc-vsm-4.12.0post-6634.r35550.x86_64.rpm'...
> 2020-10-23 15:42:34,191: Failed to get information about package 'thinlinc-vsm-agent':
> 2020-10-23 15:42:34,191: package thinlinc-vsm-agent is not installed
> 2020-10-23 15:42:34,200: Failed to get information about package 'thinlinc-vsm-server':
> 2020-10-23 15:42:34,200: package thinlinc-vsm-server is not installed
It seems these lines are caused by the fact that we mark "thinlinc-rdesktop", "thinlinc-vsm-agent", and "thinlinc-vsm-server" as obsoleted by our tlmisc, and vsm-packages respectively.
Since the packages the log complains about are old, the expected behavior is that they aren't found in the case of an upgrade. This in turn means that the log should not complain about this.
Note that the spec-file for tlmisc also lies and says that it provides "thinlinc-rdesktop", this is a workaround that was done as part of bug 7279, see the explanation in the commit message for r34036.