Package files:
 100 /var/lib/dpkg/status
     release a=now
 995 https://storage.googleapis.com/cros-packages/76 stretch/main arm64 Packages
     release v=1.0,o=Google,a=stable,n=stretch,l=cros-containers,c=main,b=arm64
     origin storage.googleapis.com
 100 https://deb.debian.org/debian stretch-backports/main arm64 Packages
     release o=Debian Backports,a=stretch-backports,n=stretch-backports,l=Debian Backports,c=main,b=arm64
     origin deb.debian.org
 500 https://deb.debian.org/debian-security stretch/updates/main arm64 Packages
     release v=9,o=Debian,a=oldstable,n=stretch,l=Debian-Security,c=main,b=arm64
     origin deb.debian.org
 500 https://deb.debian.org/debian stretch/main arm64 Packages
     release v=9.9,o=Debian,a=oldstable,n=stretch,l=Debian,c=main,b=arm64
     origin deb.debian.org
Pinned packages:
     wayland-protocols -> 1.13-1~bpo9+1 with priority 500
     libwayland-client0 -> 1.16.0-1~bpo9+1 with priority 500
     libwayland-bin -> 1.16.0-1~bpo9+1 with priority 500
     libwayland-server0 -> 1.16.0-1~bpo9+1 with priority 500
     libwayland-cursor0 -> 1.16.0-1~bpo9+1 with priority 500