Description of problem:

Mageia7 beta3 running KDE Plasma. Everything up-to-date.
After install, PDFarranger can't be launched from the menu.
It can't be launched from a terminal either and the output is:

$ pdfarranger 
Traceback (most recent call last):
  File "/usr/bin/pdfarranger", line 6, in <module>
    from pkg_resources import load_entry_point
ModuleNotFoundError: No module named 'pkg_resources'


Steps to Reproduce:
1. Install Mga7-beta3 and keep it up-to-date
2. Install PDFarranger

# urpmi pdfarranger
Pour satisfaire les dépendances, les paquetages suivants vont être installés :
  Paquetage                      Version      Révision      Arch    
(média « Core Release »)
  lib64poppler-gir0.18           0.74.0       3.mga7        x86_64  
  pdfarranger                    1.1.1        3.mga7        noarch  
  python3-pypdf2                 1.26.0       3.mga7        noarch  
un espace additionnel de 851Ko sera utilisé.
237Ko de paquets seront récupérés.

3. Try to run pdfarranger from a Konsole and see the error message:

$ pdfarranger
Traceback (most recent call last):
  File "/usr/bin/pdfarranger", line 6, in <module>
    from pkg_resources import load_entry_point
ModuleNotFoundError: No module named 'pkg_resources'