Index: wireplumber/meson.build
===================================================================
--- wireplumber.orig/meson.build
+++ wireplumber/meson.build
@@ -1,7 +1,7 @@
 project('wireplumber', ['c'],
   version : '0.4.4',
   license : 'MIT',
-  meson_version : '>= 0.56.0',
+  meson_version : '>= 0.54.0',
   default_options : [
     'warning_level=1',
     'buildtype=debugoptimized',
@@ -123,8 +123,8 @@ endif
 
 conf_uninstalled = configuration_data()
 conf_uninstalled.set('MESON', '')
-conf_uninstalled.set('MESON_SOURCE_ROOT', meson.project_source_root())
-conf_uninstalled.set('MESON_BUILD_ROOT', meson.project_build_root())
+conf_uninstalled.set('MESON_SOURCE_ROOT', meson.source_root())
+conf_uninstalled.set('MESON_BUILD_ROOT', meson.build_root())
 
 wp_uninstalled = configure_file(
   input : 'wp-uninstalled.sh',