timeshift: fix build

srcpkgs/timeshift/patches/ftbfs.patch

@@ -0,0 +1,26 @@
+From 1eb8fe02137b95f384508c676af20adaeac31971 Mon Sep 17 00:00:00 2001
+From: wesaphzt <45947243+wesaphzt@users.noreply.github.com>
+Date: Wed, 11 Sep 2019 11:39:29 +0000
+Subject: [PATCH] Update AsyncTask.vala
+
+Fix error when building from source
+Utility/AsyncTask.vala:76.2-76.17: error: Creation method of abstract class cannot be public.
+public AsyncTask(){
+^^^^^^^^^^^^^^^^
+---
+ src/Utility/AsyncTask.vala | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/Utility/AsyncTask.vala b/src/Utility/AsyncTask.vala
+index f5504e8..0bbc85f 100644
+--- src/Utility/AsyncTask.vala
++++ src/Utility/AsyncTask.vala
+@@ -73,7 +73,7 @@ public abstract class AsyncTask : GLib.Object{
+ 	public signal void stderr_line_read(string line);
+ 	public signal void task_complete();
+ 
+-	public AsyncTask(){
++	protected AsyncTask(){
+ 		working_dir = TEMP_DIR + "/" + timestamp_for_path();
+ 		script_file = path_combine(working_dir, "script.sh");
+ 		log_file = path_combine(working_dir, "task.log");