[gtk/wip/otte/build: 815/819] build: disable Vulkan by default

[Matthias Clasen <matthiasc src gnome org>]

commit 40e33e169dd105ff48e90f6d6de6eea48a6b2b54
Author: Benjamin Otte <otte redhat com>
Date:   Thu Apr 1 18:08:19 2021 +0200

    build: disable Vulkan by default
    
    We don't want people to build Vulkan support when they just want to get
    GTK built.
    
    This is in particular true for GTK as a CI subproject or for people
    using jhbuild.
    
    Worse, just having Vulkan support compiled in tends to cause crashes
    in the Inspector, even if you are not using it.

 .gitlab-ci/test-docker.sh | 2 +-
 meson_options.txt         | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/.gitlab-ci/test-docker.sh b/.gitlab-ci/test-docker.sh
index ada8edaba6..1df2da094a 100755
--- a/.gitlab-ci/test-docker.sh
+++ b/.gitlab-ci/test-docker.sh
@@ -15,7 +15,7 @@ meson \
         -Dx11-backend=true \
         -Dwayland-backend=true \
         -Dbroadway-backend=true \
-        -Dvulkan=yes \
+        -Dvulkan=enabled \
         -Dprofiler=true \
         --werror \
         ${EXTRA_MESON_FLAGS:-} \
diff --git a/meson_options.txt b/meson_options.txt
index 2223cb7964..3a471a2025 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -50,8 +50,8 @@ option('print-cups',
 
 option('vulkan',
        type: 'feature',
-       value: 'auto',
-       description : 'Enable support for the Vulkan graphics API')
+       value: 'disabled',
+       description : 'Enable support for the experimental Vulkan graphics API')
 
 option('xinerama',
        type: 'feature',