[gnome-builder/wip/albfan/flatpak-plugin-extensions] flatpak: Add plugin extension point

[Alberto Fanjul <albfan src gnome org>]

commit a16f8e285d1692eaea9117dd1328db21f7beb0bf
Author: Alberto Fanjul <albertofanjul gmail com>
Date:   Wed Apr 8 02:06:57 2020 +0200

    flatpak: Add plugin extension point

 .../flatpak-Add-plugins-extension-path.patch       | 26 ++++++++++++++++++++++
 build-aux/flatpak/org.gnome.Builder.json           | 15 +++++++++++++
 2 files changed, 41 insertions(+)
---
diff --git a/build-aux/flatpak/flatpak-Add-plugins-extension-path.patch 
b/build-aux/flatpak/flatpak-Add-plugins-extension-path.patch
new file mode 100644
index 000000000..3da5e398b
--- /dev/null
+++ b/build-aux/flatpak/flatpak-Add-plugins-extension-path.patch
@@ -0,0 +1,26 @@
+From a514320a12d5c088d229a192e499b5d9601a4558 Mon Sep 17 00:00:00 2001
+From: Alberto Fanjul <albfan gnome org>
+Date: Wed, 8 Apr 2020 02:16:39 +0200
+Subject: [PATCH] flatpak: Add plugins extension path
+
+---
+ src/libide/gui/ide-application-plugins.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/src/libide/gui/ide-application-plugins.c b/src/libide/gui/ide-application-plugins.c
+index 9cdbe63f2..eecfc3843 100644
+--- a/src/libide/gui/ide-application-plugins.c
++++ b/src/libide/gui/ide-application-plugins.c
+@@ -338,7 +338,8 @@ _ide_application_load_plugins (IdeApplication *self)
+    */
+   peas_engine_prepend_search_path (engine,
+                                    PACKAGE_LIBDIR"/gnome-builder/plugins",
+-                                   PACKAGE_DATADIR"/gnome-builder/plugins");
++                                   PACKAGE_DATADIR"/gnome-builder/plugins",
++                                   "/app/extensions/lib/gnome-builder/plugins");
+ 
+   if (ide_is_flatpak ())
+     {
+-- 
+2.26.0
+
diff --git a/build-aux/flatpak/org.gnome.Builder.json b/build-aux/flatpak/org.gnome.Builder.json
index b418feb4c..614236aae 100644
--- a/build-aux/flatpak/org.gnome.Builder.json
+++ b/build-aux/flatpak/org.gnome.Builder.json
@@ -8,6 +8,17 @@
         "nightly"
     ],
     "desktop-file-name-prefix" : "(Nightly) ",
+    "add-extensions": {
+        "org.gnome.Builder.Plugin": {
+            "version": "master",
+            "directory": "extensions",
+            "add-ld-path": "lib",
+            "merge-dirs": "lib/gnome-builder/plugins",
+            "subdirectories": true,
+            "no-autodownload": true,
+            "autodelete": true
+        }
+    },
     "finish-args" : [
         "--require-version=1.0.0",
         "--allow=devel",
@@ -649,6 +660,10 @@
                     "disable-shallow-clone" : true,
                     "type" : "git",
                     "url" : "https://gitlab.gnome.org/GNOME/gnome-builder.git";
+                },
+                {
+                    "type" : "patch",
+                    "path" : "flatpak-Add-plugins-extension-path.patch"
                 }
             ]
         }