debian/Sid: apt-listbugs bacato blocca aggiornamenti

[Ennio-Sr <nasr.laili@tin.it>]

Ciao a tutti,
ho provato diversi suggerimenti trovati in rete, ma non sono riuscito a
superare questo scoglio. Mi sembra di essere entrato in un loop
diabolico e non sono in grado di uscirne.
Piuttosto che descrivere ciò che succede, forse è meglio che vi presenti
ciò che mi appare quando lancio 'apt autoremove' e 'apt --fix-broken install'.
Potete aiutarmi?
Grazie dell''attenzione, Ennio

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root@deb-Fuji:~# apt autoremove  
Reading package lists... Done 
Building dependency tree 
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these. 
The following packages have unmet dependencies: 
dconf-gsettings-backend : Depends: dconf-service (< 0.34.0-2.1~)
Depends: libdconf1 (= 0.34.0-2) but 0.38.0-1 is installed  
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution). 
root@deb-Fuji:~# apt --fix-broken install   
Reading package lists... Done
Building dependency tree   
Reading state information... Done  
Correcting dependencies... Done 
The following packages were automatically installed and are no longer required:  
argyll argyll-ref docutils-doc libboost-atomic1.67.0 libboost-chrono1.67.0 libxcb-xf86dri0 
Use 'apt autoremove' to remove them.   
The following additional packages will be installed:   
dconf-gsettings-backend   
The following packages will be upgraded:  
dconf-gsettings-backend   
1 upgraded, 0 newly installed, 0 to remove and 775 not upgraded.  
2 not fully installed or removed.   
Need to get 0 B/30.6 kB of archives.
After this operation, 1,024 B disk space will be freed.  
Do you want to continue? [Y/n] Y 
/usr/lib/ruby/vendor_ruby/rubygems/defaults/operating_system.rb:84:in `singleton class': \ 
     undefined method `default_specifications_dir' for class `#<Class:Gem>' (NameError)  \
from /usr/lib/ruby/vendor_ruby/rubygems/defaults/operating_system.rb:58:in `<top (required)>'   
from /usr/lib/ruby/2.3.0/rubygems.rb:1242:in `require'      
from /usr/lib/ruby/2.3.0/rubygems.rb:1242:in `<top (required)>' 
from <internal:gem_prelude>:4:in `require' 
from <internal:gem_prelude>:4:in `<internal:gem_prelude>' 
E: Sub-process /usr/bin/apt-listbugs apt returned an error code (1) 
E: Failure running script /usr/bin/apt-listbugs apt  
root@deb-Fuji:~# 
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