[gimp/wip/Jehan/investigate-win-CI-bug] DO NOT MERGE!

[Jehan <jehanp src gnome org>]

commit 692423e98b28e2a1990a920d10108fa965fe44ca
Author: Jehan <jehan girinstud io>
Date:   Mon May 11 08:32:48 2020 +0200

    DO NOT MERGE!
    
    Just a test build to help upstream to investigate their bug.
    Or at least see if this is not fixed already in their master code.
    https://github.com/mesonbuild/meson/issues/6115#issuecomment-626345479

 .gitlab-ci.yml                                   |  2 +-
 build/windows/crossbuild-gitlab-ci/build-deps.sh | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b2bc22cbeb..4be6ef700b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -190,7 +190,7 @@ deps-win64:
         gcc-mingw-w64-x86-64
         g++-mingw-w64-x86-64
         git
-        meson
+        ninja
         pkg-config
         python3-distutils
         python3-docutils
diff --git a/build/windows/crossbuild-gitlab-ci/build-deps.sh 
b/build/windows/crossbuild-gitlab-ci/build-deps.sh
index e553d43e6a..df2c301603 100644
--- a/build/windows/crossbuild-gitlab-ci/build-deps.sh
+++ b/build/windows/crossbuild-gitlab-ci/build-deps.sh
@@ -1,4 +1,14 @@
 crossroad source msys2
+
+git clone https://github.com/mesonbuild/meson.git
+cd meson
+export PYTHONPATH=$CROSSROAD_PREFIX/lib/python3.7/site-packages/:$PYTHONPATH
+python3 ./setup.py build
+python3 ./setup.py install --prefix=$CROSSROAD_PREFIX
+cd ..
+
+echo "XXX MESON: `which meson` XXX"
+
 mkdir _deps && cd _deps
 
 # babl