[gnome-builder] flatpak: Dedupe runtimes in preferences pane

[Matthew Leeds <mwleeds src gnome org>]

commit 3c0c6fe1d506dc9ebc601b92a2e28f0313442e5f
Author: Matthew Leeds <mleeds redhat com>
Date:   Sun Apr 23 15:31:13 2017 -0500

    flatpak: Dedupe runtimes in preferences pane
    
    If a runtime is, for example, installed in both the user installation and
    a system one, just show the user one which can be updated without
    permissions issues. The interface doesn't show which installation
    runtimes are from so duplicates are confusing.

 plugins/flatpak/gbp-flatpak-preferences-addin.c |   18 +++++++++++++++++-
 1 files changed, 17 insertions(+), 1 deletions(-)
---
diff --git a/plugins/flatpak/gbp-flatpak-preferences-addin.c b/plugins/flatpak/gbp-flatpak-preferences-addin.c
index d773023..6ad7295 100644
--- a/plugins/flatpak/gbp-flatpak-preferences-addin.c
+++ b/plugins/flatpak/gbp-flatpak-preferences-addin.c
@@ -135,6 +135,21 @@ is_old_gnome_version (const gchar *version)
   return g_utf8_collate (MIN_GNOME_VERSION, version) > 0;
 }
 
+static gboolean
+contains_runtime (GPtrArray  *runtimes,
+                  FlatpakRef *ref)
+{
+  for (guint i = 0; i < runtimes->len; i++)
+    {
+      FlatpakRef *existing_ref = g_ptr_array_index (runtimes, i);
+      if (g_strcmp0 (flatpak_ref_format_ref (existing_ref),
+                     flatpak_ref_format_ref (ref)) == 0)
+        return TRUE;
+    }
+
+  return FALSE;
+}
+
 static void
 populate_runtimes (GbpFlatpakPreferencesAddin *self,
                    FlatpakInstallation        *installation,
@@ -180,7 +195,8 @@ populate_runtimes (GbpFlatpakPreferencesAddin *self,
               if (g_strcmp0 (arch, flatpak_get_default_arch ()) != 0)
                 continue;
 
-              g_ptr_array_add (runtimes, g_object_ref (ref));
+              if (!contains_runtime (runtimes, ref))
+                g_ptr_array_add (runtimes, g_object_ref (ref));
             }
         }
     }