[gnome-software] build: Add a default_featured_apps option

[Richard Hughes <rhughes src gnome org>]

commit ee36e68a92d43587293c513bc60f57b2e85cd744
Author: Philip Withnall <withnall endlessm com>
Date:   Wed Dec 4 13:34:56 2019 +0000

    build: Add a default_featured_apps option
    
    Add a `default_featured_apps` boolean option which controls whether the
    default featured apps list (`org.gnome.Software.Featured.xml`) is
    installed. On most distros, it makes sense to install this (and the
    option defaults to `true`), but some distros will want finer control
    over their featured apps (or to override the entire list). Those distros
    should use `-Ddefault_featured_apps=false` and set the default value of
    `external-appstream-urls` in GSettings to point to a relevant override
    appstream file which sets the desired featured apps.
    
    Signed-off-by: Philip Withnall <withnall endlessm com>
    
    Fixes: #692

 data/assets/meson.build | 8 +++++---
 meson_options.txt       | 1 +
 2 files changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/data/assets/meson.build b/data/assets/meson.build
index f74bafb7..b0371d8e 100644
--- a/data/assets/meson.build
+++ b/data/assets/meson.build
@@ -34,6 +34,8 @@ install_data([
   install_dir : 'share/gnome-software'
 )
 
-install_data('org.gnome.Software.Featured.xml',
-  install_dir : 'share/app-info/xmls'
-)
+if get_option('default_featured_apps')
+  install_data('org.gnome.Software.Featured.xml',
+    install_dir : 'share/app-info/xmls'
+  )
+endif
diff --git a/meson_options.txt b/meson_options.txt
index 74af14ba..d0bb00ae 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -19,4 +19,5 @@ option('external_appstream', type : 'boolean', value : false, description : 'ena
 option('valgrind', type : 'boolean', value : true, description : 'enable Valgrind debugging integration')
 option('gtk_doc', type : 'boolean', value : true, description : 'enable API reference')
 option('hardcoded_popular', type : 'boolean', value : true, description : 'enable hardcoded-popular apps 
plugin')
+option('default_featured_apps', type : 'boolean', value : true, description : 'enable installation of 
default featured apps list')
 option('mogwai', type : 'boolean', value : false, description : 'enable metered data support using Mogwai')