Meson: Fix deprecations (#1579)

* FuzzySearch: replace deprecated meson.source_root

* Meson Options: fix deprecated bool is string

Author: danirabbit

meson_options.txt

@@ -1,3 +1,3 @@
-option ('plugins', type : 'boolean', value : true)
-option('have_pkexec', type : 'boolean', value : 'true', description : 'Allow launching with pkexec. Should not be used in FlatPak')
+option('plugins', type : 'boolean', value : true)
+option('have_pkexec', type : 'boolean', value : true, description : 'Allow launching with pkexec. Should not be used in FlatPak')
 option('development', type : 'boolean', value : false, description : 'Build is a development branch')

plugins/fuzzy-search/meson.build

@@ -29,7 +29,7 @@ custom_target(module_name + '.plugin_merge',
                '--desktop',
                '--keyword=Description',
                '--keyword=Name',
-               '-d' + join_paths(meson.source_root (), 'po', 'plugins'),
+               '-d' + join_paths(meson.project_source_root (), 'po', 'plugins'),
                '--template=@INPUT@',
                '-o@OUTPUT@',
                ],