nix: Backport bug fix to check NAR integrity
nixUnstable: Update to 1.7pre3319_f4013b6
ledger3: Update to latest git (3b5f496536).
gnome_themes_standard: bump to 3.10.0 and move into gnome3 attrset
Add gnome3.libpeas
icon-naming-utils: add librsvg dependency and meta.platforms
Add gnome3.gtksourceview
gnome3.libcroco: add platforms
gnome3.gnome-desktop: 3.5 -> 3.11
gnome3.gsettings_desktop_schemas: 3.6 -> 3.10, add gobjectIntrospection
gnome3.gnome-icon-theme: 3.6 -> 3.10, add platforms
libgit2: add threadsafe
gnome3.evince: 3.6 -> 3.11
Add gtkspell3
add gnome.eog: GNOME Image Viewer
Add gnome3.nautilus and remove gnome2.nautilus (didn't compile)

Some icons are still missing (and theme), didn't find a way to fix that.
Add gnome3.file-roller
fix typo in gnome3.libpeas
remove pointless passthru meta
gnome3: build packages on linux platform