XXX fix+push upstream

Index: utils/meson.build
--- utils/meson.build.orig
+++ utils/meson.build
@@ -56,7 +56,7 @@ if help2man.found() and not meson.is_cross_build()
                   help2man, help2man_opts, '--output=@OUTPUT@', pango_view
                 ],
                 install: true,
-                install_dir: join_paths(pango_datadir, 'man/man1'))
+                install_dir: join_paths(pango_prefix, 'man/man1'))
 endif
 
 if cairo_dep.found()