Public

acsm file association

cp digitaleditions.desktop /usr/share/applications

[Desktop Entry]                                                           
Encoding=UTF-8                                                            
Name=digitaleditions                                                      
Comment=PlayOnLinux                                                       
Type=Application                                                          
Exec=/usr/share/playonlinux/playonlinux --run "digitaleditions" %F        
Icon=/home/alex/.PlayOnLinux//icones/full_size/digitaleditions            
Name[fr_FR]=digitaleditions                                               
StartupWMClass=digitaleditions.exe                                        
Categories=                                                               

Associate with nautilus open file with –> choose other and select DigitalEdition

Calibre file convertion fail with

This application failed to start because it could not find or load the Qt platform plugin "headless"
in "/usr/lib64/calibre/calibre/plugins".

Available platform plugins are: headless (from /usr/lib64/calibre/calibre/plugins), minimal, offscreen, xcb.

Probably you rebuild qt libraries and some dependencies is broken. Try to rebuild Calibre

Calibre 2.78.0 works with dev-qt/qtgui-4.8.7

Trying calibre-3.15.0 with qt dev-qt/qtgui-5.9.4-r3 –> WORKS!