YOLO: Flatpak on taskcluster?

taskcluster/docker/linux-flatpak-build/Dockerfile

@@ -0,0 +1,52 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+FROM ubuntu:22:04
+
+MAINTAINER Naomi Kirby <[email protected]>
+
+#----------------------------------------------------------------------------------------------------------------------
+#-- Extra Packages ----------------------------------------------------------------------------------------------------
+#----------------------------------------------------------------------------------------------------------------------
+ENV CURL='curl --location --retry 5' \
+    DEBIAN_FRONTEND='noninteractive' \
+    LANG='en_US.UTF-8' \
+    TERM='dumb'
+
+RUN apt-get update \
+    && apt-get install -y tzdata \
+    && apt-get install -y flatpak \
+                          locales \
+                          sudo \
+    && apt-get clean
+
+# TODO: Pre-fetch the flatpak runtimes?
+
+#----------------------------------------------------------------------------------------------------------------------
+#-- Worker User -------------------------------------------------------------------------------------------------------
+#----------------------------------------------------------------------------------------------------------------------
+
+# Setup the worker user
+# %include taskcluster/scripts/setup-worker.sh
+ADD topsrcdir/taskcluster/scripts/setup-worker.sh /root/setup-worker.sh
+RUN /root/setup-worker.sh
+WORKDIR /builds/worker/
+
+#----------------------------------------------------------------------------------------------------------------------
+#-- Task Setup --------------------------------------------------------------------------------------------------------
+#----------------------------------------------------------------------------------------------------------------------
+
+# %include-run-task
+# %include taskcluster/scripts/build/linux_build_flatpak.sh
+ADD topsrcdir/taskcluster/scripts/build/linux_build_flatpak.sh /builds/worker/builder.sh
+
+ENV SHELL=/bin/bash \
+    HOME=/builds/worker \
+    PATH="/builds/worker/.local/bin:$PATH"
+
+VOLUME /builds/worker/checkouts
+VOLUME /builds/worker/.cache
+
+# run-task expects to run as root
+USER root

taskcluster/kinds/build/linux.yml

@@ -96,3 +96,16 @@ linux/static:
         docker-image: {in-tree: linux-qt6-build}
     run:
         command: /builds/worker/builder.sh -s
+
+linux/flatpak:
+    description: "Linux Build (Flatpak)"
+    treeherder:
+        platform: linux/flatpak
+    worker:
+        docker-image: {in-tree: linux-flatpak-build}
+        docker-in-docker: true
+    run:
+        using: run-task
+        use-caches: false
+        cwd: '{checkout}'
+        command: ./taskcluster/scripts/build/linux_build_flatpak.sh

taskcluster/kinds/docker-image/kind.yml

@@ -41,6 +41,9 @@ tasks:
         parent: base
         symbol: I(linux-qt6-build)
         definition: linux-qt6-build
+    linux-flatpak-build:
+        symbol: I(linux-flatpak)
+        definition: linux-flatpak-build
     linux-build-focal:
         symbol: I(linux-focal)
         definition: linux-dpkg-build

taskcluster/scripts/build/linux_build_flatpak.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+set -e
+
+# Dump some stuff for debug
+cat /etc/os-release
+env
+
+sudo apt-get update
+sudo apt-get install flatpak flatpak-builder -y
+
+flatpak remote-add --user --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
+
+mkdir ${TASK_WORKDIR}/fp-build-dir
+flatpak-builder --user --install-deps-from=flathub --install-deps-only ${TASK_WORKDIR}/fp-build-dir ${MOZ_FETCHES_DIR}/org.mozilla.vpn.yml
+
+flatpak-builder --user ${TASK_WORKDIR}/fp-build-dir ${MOZ_FETCHES_DIR}/org.mozilla.vpn.yml
+
+mkdir ${TASK_WORKDIR}/fp-export-dir
+flatpak build-export ${TASK_WORKDIR}/fp-export-dir ${TASK_WORKDIR}/fp-build-dir
+
+# Export the flatpak
+flatpak build-bundle ${TASK_WORKDIR}/fp-export-dir /builds/worker/artifacts/mozillavpn.flatpak org.mozilla.vpn