_From @probonopd on November 28, 2015 13:16_ Trying to follow the instructions from https://wiki.gnome.org/Projects/SandboxedApps/NightlyBuilds on Fedora 23, I get: ``` xdg-app install-runtime --user gnome org.gnome.Platform 3.18 ... error: While pulling runtime/org.gnome.Platform/x86_64/3.18 from remote gnome: Operation not supported ``` _Copied from original issue: alexlarsson/xdg-app#85_