Motivation for this change

NOTE: This is work in progress, not ready yet. I just need some help to finish this.

FeedReader is a very nice RSS/Atom reader with online synchronization support with ownCloud.

Question: I added Vala support to Gnome Online Accounts. Is this ok? FeedReader requires that.

The feedreader package compiles but I get errors when trying to run it:

$ nix-shell -p feedreader
$ feedreader
(feedreader:9953): GLib-GIO-ERROR **: Settings schema 'org.gnome.feedreader' is not installed
Trace/breakpoint trap

Any ideas how to fix this? I tried adding schema installation to postInstall but apparently it doesn't work. I'm using KDE if that matters.

Things done

• Tested using sandboxing
  (nix.useSandbox on NixOS,
  or option build-use-sandbox in nix.conf
  on non-NixOS)
• Built on platform(s)
  • NixOS
  • macOS
  • Linux
• Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Fits CONTRIBUTING.md.