[geary/mjog/592-test-valac-patch-3-32] Build vala branch wip/issue/879 in Flatpak manifest

[Michael Gratton <mjog src gnome org>]

commit cd4e1966e71106662b23cffb0b8017a26dd8a082
Author: Michael Gratton <mike vee net>
Date:   Fri Nov 29 00:33:45 2019 +1100

    Build vala branch wip/issue/879 in Flatpak manifest
    
    See if GNOME/vala!89 helps with #592

 org.gnome.Geary.yml | 12 ++++++++++++
 1 file changed, 12 insertions(+)
---
diff --git a/org.gnome.Geary.yml b/org.gnome.Geary.yml
index 5c12c4d8..c71daef4 100644
--- a/org.gnome.Geary.yml
+++ b/org.gnome.Geary.yml
@@ -73,6 +73,18 @@ cleanup:
 
 modules:
 
+  # Issue #592 Vala MR test
+  - name: vala
+    buildsystem: autotools
+    config-opts:
+      - "--disable-valadoc"
+      - "--enable-unversioned"
+    sources:
+      - type: git
+        url: "https://gitlab.gnome.org/GNOME/vala.git";
+        branch: wip/issue/879
+        disable-shallow-clone: true
+
   # Geary dependency
   - name: gnome-online-accounts
     config-opts: