Test flatpak build

This makes sure the flatpak build actually works and we have
the examples available for easy download.

This is somewhat based on the GTK+4 flatpak CI test.

.gitlab-ci.yml

@@ -131,6 +131,28 @@ lintian-debian-buster-package:
     - package-debian-buster
   extends: .l5-lintian-debian-package
 
+package-flatpak:
+  image: registry.gitlab.gnome.org/gnome/gnome-runtime-images/gnome:master
+  tags:
+    - flatpak
+  stage: package
+  variables:
+    app_id: "sm.puri.Handy.Demo"
+  artifacts:
+    paths:
+      - "${app_id}-dev.flatpak"
+    expire_in: 1 day
+  before_script:
+    - flatpak install -y --noninteractive gnome-nightly org.gnome.Sdk org.gnome.Platform
+    - rm -rf _build/
+  script:
+    - bash -x .gitlab-ci/flatpak-build.sh "${app_id}"
+  artifacts:
+    when: always
+    paths:
+      - _build/meson-logs/meson-log.txt
+      - sm.puri.Handy.Demo-dev.flatpak
+
 publish-docs:
   stage: deploy
   dependencies:

.gitlab-ci/flatpak-build.sh

+#!/bin/bash
+
+set -e
+
+builddir=app
+repodir=repo
+appid="$1"
+manifest=examples/${appid}.json
+
+flatpak-builder \
+       --stop-at=libhandy \
+       ${builddir} \
+       ${manifest}
+
+flatpak-builder -v \
+        --run ${builddir} ${manifest} \
+        meson \
+                --prefix /app \
+                --libdir /app/lib \
+                --buildtype debug \
+                -Dintrospection=disabled \
+                -Dvapi=false \
+                _build .
+
+flatpak-builder \
+        --run ${builddir} ${manifest} \
+        ninja -C _build install
+
+flatpak-builder \
+        --finish-only \
+        --repo=${repodir} \
+        ${builddir} \
+        ${manifest}
+
+flatpak build-bundle \
+        ${repodir} \
+        ${appid}-dev.flatpak \
+        --runtime-repo=https://flathub.org/repo/flathub.flatpakrepo \
+        ${appid}