File reproducible.patch of Package gpick

Index: gpick_0.2.5/tools/gpick.py
===================================================================
--- gpick_0.2.5.orig/tools/gpick.py
+++ gpick_0.2.5/tools/gpick.py
@@ -147,8 +147,8 @@ class GpickEnvironment(SConsEnvironment)
 			revision = 'not under version control system'
 
 		self.Replace(GPICK_BUILD_REVISION = revision,
-			GPICK_BUILD_DATE =  time.strftime ("%Y-%m-%d"),
-			GPICK_BUILD_TIME =  time.strftime ("%H:%M:%S"));	
+			GPICK_BUILD_DATE =  time.strftime ("%Y-%m-%d", time.gmtime(int(os.environ.get('SOURCE_DATE_EPOCH', time.time())))),
+			GPICK_BUILD_TIME =  time.strftime ("%H:%M:%S"));
 
 def RegexEscape(str):
 	return str.replace('\\', '\\\\')