Use flatpak preinstall for system Flatpak apps

.github/workflows/main.yaml

@@ -25,7 +25,7 @@ jobs:
       - name: Install Dependencies
         run: |
           apt update
-          apt install -y meson libaccountsservice-dev dbus libpolkit-gobject-1-dev python3 libglib2.0-bin
+          apt install -y meson libaccountsservice-dev dbus libpolkit-gobject-1-dev python3 libglib2.0-bin systemd-dev
       - name: Build
         env:
           DESTDIR: ${{ env.PWD }}/build/out

flatpak/appcenter.preinstall

@@ -0,0 +1,32 @@
+[Flatpak Preinstall io.elementary.calculator]
+Branch=stable
+
+[Flatpak Preinstall io.elementary.camera]
+Branch=stable
+
+[Flatpak Preinstall io.elementary.capnet-assist]
+Branch=stable
+
+[Flatpak Preinstall io.elementary.maps]
+Branch=stable
+
+[Flatpak Preinstall io.elementary.music]
+Branch=stable
+
+[Flatpak Preinstall io.elementary.screenshot]
+Branch=stable
+
+[Flatpak Preinstall io.elementary.videos]
+Branch=stable
+
+[Flatpak Preinstall org.gnome.Epiphany]
+Branch=stable
+
+[Flatpak Preinstall org.gnome.Evince]
+Branch=stable
+
+[Flatpak Preinstall org.gnome.FileRoller]
+Branch=stable
+
+[Flatpak Preinstall org.gnome.font-viewer]
+Branch=stable

flatpak/flatpak-preinstalld.service

@@ -0,0 +1,22 @@
+[Unit]
+Description=Preinstall Flatpaks
+After=network-online.target
+Wants=network-online.target
+ConditionPathExists=/usr/bin/flatpak
+ConditionPathExists=!/var/lib/flatpak/.preinstall-finished
+Documentation=man:flatpak-preinstall(1)
+StartLimitIntervalSec=600
+
+[Service]
+Type=oneshot
+ExecStart=mkdir -p /var/lib/flatpak/
+ExecStart=/usr/bin/flatpak preinstall -y
+ExecStart=touch /var/lib/flatpak/.preinstall-finished
+RemainAfterExit=true
+Restart=on-failure
+RestartSec=30
+
+StartLimitBurst=3
+
+[Install]
+WantedBy=multi-user.target

flatpak/meson.build

@@ -0,0 +1,17 @@
+install_data(
+    'appcenter.preinstall',
+    install_dir: datadir / 'flatpak' / 'preinstall.d'
+)
+
+systemd_system_unit_dir = get_option('systemdsystemunitdir')
+if systemd_system_unit_dir != 'no'
+    if systemd_system_unit_dir == ''
+        systemd_dep = dependency('systemd')
+        systemd_system_unit_dir = systemd_dep.get_variable('systemdsystemunitdir', pkgconfig_define: ['rootprefix', prefix])
+    endif
+
+    install_data(
+        'flatpak-preinstalld.service',
+        install_dir: systemd_system_unit_dir
+    )
+endif

meson.build

@@ -9,6 +9,7 @@ gnome = import('gnome')
 prefix = get_option('prefix')
 datadir = prefix / get_option('datadir')
 sysconfdir = get_option('sysconfdir')
+sharedstatedir = get_option('sharedstatedir')
 schemadir = datadir / 'glib-2.0' / 'schemas'
 
 gnome.post_install(glib_compile_schemas: true)
@@ -59,3 +60,6 @@ subdir('gtk')
 
 # Network settings
 subdir('network')
+
+# Flatpak preinstall files
+subdir('flatpak')

meson_options.txt

@@ -27,3 +27,8 @@ option('geoclue',
        type: 'boolean',
        value: true,
        description: 'Install configuration files for GeoClue')
+
+option('systemdsystemunitdir',
+       type: 'string',
+       value: '',
+       description: 'Custom directory for systemd system units, or \'no\' to disable')

skel/meson.build

@@ -2,6 +2,12 @@ skeldir = sysconfdir / 'skel'
 
 # AppCenter Flatpak Remote
 if get_option('appcenter-flatpak')
+    # remote for system-wide installation
+    install_subdir(
+        'flatpak',
+        install_dir: sharedstatedir
+    )
+    # remote for per-user installation
     install_subdir(
         'flatpak',
         install_dir: skeldir / '.local' / 'share'