Dear Moritz,
here's the requested output: Paketdateien: 100 /var/lib/dpkg/status release a=now 500 http://download.virtualbox.org/virtualbox/debian stretch/contrib amd64 Packages release o=Oracle Corporation,n=stretch,l=Oracle Corporation,c=contrib,b=amd64 origin download.virtualbox.org 500 http://dl.bintray.com/seafile-org/deb jessie/main amd64 Packages release o=Bintray,a=jessie,n=jessie,l=Bintray,c=main,b=amd64 origin dl.bintray.com 500 http://download.opensuse.org/repositories/home:/osmc/Debian_8.0 Packages release o=obs://build.opensuse.org/home:osmc/Debian_8.0,n=Debian_8.0,l=home:osmc,c= origin download.opensuse.org 500 http://httpredir.debian.org/debian stretch/non-free amd64 Packages release o=Debian,a=testing,n=stretch,l=Debian,c=non-free,b=amd64 origin httpredir.debian.org 500 http://httpredir.debian.org/debian stretch/contrib amd64 Packages release o=Debian,a=testing,n=stretch,l=Debian,c=contrib,b=amd64 origin httpredir.debian.org 500 http://httpredir.debian.org/debian stretch/main amd64 Packages release o=Debian,a=testing,n=stretch,l=Debian,c=main,b=amd64 origin httpredir.debian.org Mit Pinning verwaltete Pakete: Best, Andreas ________________________________ Von: Schlarb, Moritz Gesendet: Donnerstag, 20. April 2017 09:01 An: 860...@bugs.debian.org Cc: Henkel, Andreas Betreff: Re: seafile-gui: fails to install Dear Andreas, please post the full output of "apt-cache policy". Regards, Moritz