[gnome-text-editor] build: now try macOS builder

[Christian Hergert <chergert src gnome org>]

commit 50f9528e290644d105aebba31ad7d70459df427f
Author: Christian Hergert <chergert redhat com>
Date:   Wed Feb 2 16:37:23 2022 -0800

    build: now try macOS builder

 .gitlab-ci.yml              | 39 +++++++++++++++++++++++++++++++++++++++
 .gitlab-ci/show-info-osx.sh |  8 ++++++++
 2 files changed, 47 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 968b300..b1585c5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -31,3 +31,42 @@ fedora:
         - mkdir -p pfx/
         - meson ${MESON_FLAGS} --prefix=${PWD}/pfx _build
         - ninja -C _build install
+
+macos:
+    extends: .only-default
+    only:
+        - branches@GNOME/gnome-text-editor
+    tags:
+        - macos
+    needs: []
+    before_script:
+        - bash .gitlab-ci/show-info-osx.sh
+        - pip3 install --user meson==0.59
+        - pip3 install --user ninja
+        - export PATH=/Users/gitlabrunner/Library/Python/3.7/bin:$PATH
+    variables:
+        MESON_FORCE_BACKTRACE: "1"
+    script:
+        - mkdir -p pfx/
+        - meson -Dgtk:x11-backend=false
+                -Dgtk:broadway-backend=true
+                -Dgtk:macos-backend=true
+                -Dgtk:media-gstreamer=disabled
+                -Dgtk:introspection=disabled
+                -Dgtk:demos=false
+                -Dgtk:build-examples=false
+                -Dgtk:build-tests=false
+                -Dcpp_std=c++11
+                -Dpixman:tests=disabled
+                -Dglib:werror=false
+                -Dgtksourceview:werror=false
+                -Dgtk:werror=false
+                -Dlibadwaita:werror=false
+                -Dlibsass:werror=false
+                -Dsassc:werror=false
+                _build
+        - ninja -C _build
+    artifacts:
+        when: always
+        paths:
+            - "${CI_PROJECT_DIR}/_build/meson-logs"
diff --git a/.gitlab-ci/show-info-osx.sh b/.gitlab-ci/show-info-osx.sh
new file mode 100755
index 0000000..cc1bfdb
--- /dev/null
+++ b/.gitlab-ci/show-info-osx.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+set -eux -o pipefail
+
+xcodebuild -version || :
+xcodebuild -showsdks || :
+
+system_profiler SPSoftwareDataType || :