Package files:
 100 /var/lib/dpkg/status
     release a=now
 500 https://updates.signal.org/desktop/apt xenial/main amd64 Packages
     release o=. xenial,a=xenial,n=xenial,l=. xenial,c=main,b=amd64
     origin updates.signal.org
 500 http://mirror.bytemark.co.uk/ubuntu disco/multiverse i386 Packages
     release v=19.04,o=Ubuntu,a=disco,n=disco,l=Ubuntu,c=multiverse,b=i386
     origin mirror.bytemark.co.uk
 500 http://mirror.bytemark.co.uk/ubuntu disco/multiverse amd64 Packages
     release v=19.04,o=Ubuntu,a=disco,n=disco,l=Ubuntu,c=multiverse,b=amd64
     origin mirror.bytemark.co.uk
 500 http://mirror.bytemark.co.uk/ubuntu disco/universe i386 Packages
     release v=19.04,o=Ubuntu,a=disco,n=disco,l=Ubuntu,c=universe,b=i386
     origin mirror.bytemark.co.uk
 500 http://mirror.bytemark.co.uk/ubuntu disco/universe amd64 Packages
     release v=19.04,o=Ubuntu,a=disco,n=disco,l=Ubuntu,c=universe,b=amd64
     origin mirror.bytemark.co.uk
 500 http://mirror.bytemark.co.uk/ubuntu disco/restricted i386 Packages
     release v=19.04,o=Ubuntu,a=disco,n=disco,l=Ubuntu,c=restricted,b=i386
     origin mirror.bytemark.co.uk
 500 http://mirror.bytemark.co.uk/ubuntu disco/restricted amd64 Packages
     release v=19.04,o=Ubuntu,a=disco,n=disco,l=Ubuntu,c=restricted,b=amd64
     origin mirror.bytemark.co.uk
 500 http://mirror.bytemark.co.uk/ubuntu disco/main i386 Packages
     release v=19.04,o=Ubuntu,a=disco,n=disco,l=Ubuntu,c=main,b=i386
     origin mirror.bytemark.co.uk
 500 http://mirror.bytemark.co.uk/ubuntu disco/main amd64 Packages
     release v=19.04,o=Ubuntu,a=disco,n=disco,l=Ubuntu,c=main,b=amd64
     origin mirror.bytemark.co.uk
Pinned packages: