Build system: Don't compile schemas when packing

src/data/meson.build

@@ -9,8 +9,14 @@ gnome.compile_resources(
   install_dir: INSTALL_DIR / 'resources',
 )
 
-glib_compile_schemas_exe = find_program('glib-compile-schemas')
+install_data(
-custom_target(
+  DNS + '.gschema.xml',
+  install_dir: INSTALL_DIR / 'schemas'
+)
+
+if not get_option('pack')
+  glib_compile_schemas_exe = find_program('glib-compile-schemas')
+  custom_target(
     'gschemas',
     build_by_default: true,
     build_always_stale: true,
@@ -22,4 +28,5 @@ custom_target(
     ],
     install: true,
     install_dir: INSTALL_DIR / 'schemas'
-)
+  )
+endif