[gnome-books/wip/carlosg/tracker3] flatpak: Add DjVu support

[Bastien Nocera <hadess src gnome org>]

commit 1f113eb6e8d3dad0700470b9418f426dcf2f591b
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Feb 16 11:55:00 2021 +0100

    flatpak: Add DjVu support

 flatpak/org.gnome.Books.json | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
---
diff --git a/flatpak/org.gnome.Books.json b/flatpak/org.gnome.Books.json
index 610688f9..a80bab77 100644
--- a/flatpak/org.gnome.Books.json
+++ b/flatpak/org.gnome.Books.json
@@ -88,6 +88,22 @@
                 }
             ]
         },
+        {
+            "name" : "djvulibre",
+            "config-opts" : [
+                "--disable-desktopfiles"
+            ],
+            "cleanup" : [
+                "/bin"
+            ],
+            "sources" : [
+                {
+                    "type" : "archive",
+                    "url" : 
"https://downloads.sourceforge.net/project/djvu/DjVuLibre/3.5.27/djvulibre-3.5.27.tar.gz";,
+                    "sha256" : "e69668252565603875fb88500cde02bf93d12d48a3884e472696c896e81f505f"
+                }
+            ]
+        },
         {
             "name": "evince",
             "buildsystem": "meson",
@@ -96,6 +112,7 @@
                              "-Dpreviewer=false", "-Ddbus=false",
                              "-Dbrowser_plugin=false", "-Dintrospection=true",
                              "-Dcomics=enabled", "-Dpdf=enabled",
+                             "-Ddjvu=enabled",
                              "-Dgspell=disabled", "-Dgtk_doc=false",
                              "-Dt1lib=disabled", "-Duser_doc=false",
                              "-Dthumbnailer=true" ],