[gtk/gtk-4-6: 1/3] meson: use proper handling of wayland-protocols dependency

[Matthias Clasen <matthiasc src gnome org>]

commit e2873bc614e50d19f1b8aa939514c83933b10136
Author: Eli Schwartz <eschwartz archlinux org>
Date:   Thu Mar 10 00:08:36 2022 -0500

    meson: use proper handling of wayland-protocols dependency
    
    Ensure that resolution of the subproject occurs via the dependency
    interface, not the "poke at subprojects manually" interface, and make
    that actually work via --wrap-mode=forcefallback.
    
    There's no need to mark it as not-required and then manually invoke
    subproject(), since fallback should work correctly and it is always
    needed.
    
    However, if fallback was performed (or forced) it would error out since
    get_variable() was instructed to only use pkg-config while the relevant
    variable was exported by the subproject as an internal fallback
    dependency.

 meson.build | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)
---
diff --git a/meson.build b/meson.build
index 63b4d73bfe..17fdb1cfe7 100644
--- a/meson.build
+++ b/meson.build
@@ -517,15 +517,11 @@ if wayland_enabled
   wlclientdep    = dependency('wayland-client', version:  wayland_req,
                               fallback: 'wayland',
                               default_options: ['documentation=false'])
-  wlprotocolsdep = dependency('wayland-protocols', version: wayland_proto_req, required: false)
+  wlprotocolsdep = dependency('wayland-protocols', version: wayland_proto_req)
   wlegldep       = dependency('wayland-egl',
                               fallback: 'wayland')
 
-  if not wlprotocolsdep.found()
-    wlproto_dir = subproject('wayland-protocols').get_variable('wayland_protocols_srcdir')
-  else
-    wlproto_dir = wlprotocolsdep.get_variable(pkgconfig: 'pkgdatadir')
-  endif
+  wlproto_dir = wlprotocolsdep.get_variable('pkgdatadir')
 
   wayland_pkgs = [
     'wayland-client @0@'.format(wayland_req),