./build.sh: 14: [: xorg.gnome.Books: unexpected operator
========== Building org.gnome.Books ================
Downloading sources
Starting build of org.gnome.Books
Cache hit for gnome-online-accounts, skipping build
Cache hit for gnome-desktop, skipping build
Cache hit for liboauth, skipping build
Cache hit for libgdata, skipping build
Cache hit for librest, skipping build
Cache hit for libzapojit, skipping build
Cache hit for popplerdata, skipping build
Cache hit for poppler, skipping build
Cache hit for evince, skipping build
Cache hit for tracker, skipping build
Cache hit for libgepub, skipping build
Cache hit for gnome-epub-thumbnailer, skipping build
Cache hit for gnome-books, skipping build
Cache hit for cleanup, skipping
Cache hit for finish, skipping
Pruning cache