"profile contains conflicting entries..." for packages with the same version

[Chris Keschnat via]

Hello,

I have "remmina" installed and get the following errors when trying to 
install "glib":

$ guix install glib
The following package will be installed:
   glib 2.70.2

guix install: error: profile contains conflicting entries for glib
guix install: error:   first entry: glib@2.70.2 
/gnu/store/zqy7rhv26ax5ng8ws3d3vs8gr1k1k491-glib-2.70.2
guix install: error:   second entry: glib@2.70.2 
/gnu/store/1gdvmmgimszagxr0l78kcx398c5g6608-glib-2.70.2
guix install: error:    ... propagated from dconf@0.40.0
guix install: error:    ... propagated from remmina@1.4.23
hint: Try upgrading both `glib' and `remmina', or remove one of them 
from the profile.


In general I think the solution would be to use multiple profiles[1] if 
I had need for multiple versions of the same package?

But why does this happen here? The versions seem to be the same.

I did a "guix pull" and "guix upgrade" before and all packages should be 
up to date.


Thank you

Chris


[1] I don't (yet) as I'm very new to guix and trying to find my way around