diff --git a/Trigger/TrigTools/TrigInDetConf/CMakeLists.txt b/Trigger/TrigTools/TrigInDetConf/CMakeLists.txt
index 3ccccafb59fd5f1b75102a8c3cc5d9527470b910..c1fdc09d1b60da365a761b02f341c14e36f6b2ca 100644
--- a/Trigger/TrigTools/TrigInDetConf/CMakeLists.txt
+++ b/Trigger/TrigTools/TrigInDetConf/CMakeLists.txt
@@ -6,5 +6,5 @@
 atlas_subdir( TrigInDetConf )
 
 # Install files from the package:
-atlas_install_python_modules( python/*.py )
+atlas_install_python_modules( python/*.py POST_BUILD_CMD ${ATLAS_FLAKE8} )
 
diff --git a/Trigger/TrigTools/TrigInDetConf/python/TrigInDetPostTools.py b/Trigger/TrigTools/TrigInDetConf/python/TrigInDetPostTools.py
index b120cfe3565f96d9e371256af283fde787b2f3d4..d832c9e4ca71b9d5575405aaf7cf4547ed3dcc5e 100644
--- a/Trigger/TrigTools/TrigInDetConf/python/TrigInDetPostTools.py
+++ b/Trigger/TrigTools/TrigInDetConf/python/TrigInDetPostTools.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
+# Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 
 from __future__ import print_function
 
@@ -15,7 +15,7 @@ from AthenaCommon.AppMgr import ToolSvc
 from InDetTrigRecExample.InDetTrigFlags import InDetTrigFlags
 
 
-from InDetTrigRecExample.InDetTrigConfigRecLoadTools import InDetTrigTrackSummaryHelperTool
+# from InDetTrigRecExample.InDetTrigConfigRecLoadTools import InDetTrigTrackSummaryHelperTool
 
 # from TrkTrackSummaryTool.TrkTrackSummaryToolConf import Trk__TrackSummaryTool
 # InDetTrigFastTrackSummaryTool = Trk__TrackSummaryTool(name = "InDetTrigFastTrackSummaryTool",
@@ -42,8 +42,8 @@ from InDetTrigRecExample.InDetTrigConfigRecLoadTools import InDetTrigTrackSummar
 
 
 from InDetTrigRecExample.InDetTrigConfigRecLoadTools import \
-    InDetTrigTrackSummaryHelperTool, InDetTrigTrackSummaryTool, InDetTrigTrackSummaryToolSharedHits, \
-    InDetTrigHoleSearchTool,InDetTrigExtrapolator
+    InDetTrigTrackSummaryToolSharedHits, \
+    InDetTrigExtrapolator
 
 from TrigInDetConf.TrigInDetRecCommonTools import InDetTrigFastTrackSummaryTool, InDetTrigTrackSummaryToolSharedHitsWithTRTPid
 
diff --git a/Trigger/TrigTools/TrigInDetConf/python/TrigInDetRecCommonTools.py b/Trigger/TrigTools/TrigInDetConf/python/TrigInDetRecCommonTools.py
index 54a32710597789e16b8146a0113cb816475bbd0b..1b3e936943fde41169e5d1e3181760aed19a55ce 100644
--- a/Trigger/TrigTools/TrigInDetConf/python/TrigInDetRecCommonTools.py
+++ b/Trigger/TrigTools/TrigInDetConf/python/TrigInDetRecCommonTools.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
+# Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 
 from __future__ import print_function
 
@@ -32,7 +32,6 @@ if (InDetTrigFlags.doPrintConfigurables()):
     print (     InDetTrigFastTrackSummaryTool)
 
 
-from InDetTrigRecExample.InDetTrigConfigRecLoadTools import InDetTrigHoleSearchTool
 InDetTrigTrackSummaryToolWithHoleSearch = Trk__TrackSummaryTool(name = "InDetTrigTrackSummaryToolWithHoleSearch",
                                                                 InDetSummaryHelperTool = InDetTrigTrackSummaryHelperTool,
                                                                 doSharedHits           = False,
diff --git a/Trigger/TrigTools/TrigInDetConf/python/TrigInDetSequence.py b/Trigger/TrigTools/TrigInDetConf/python/TrigInDetSequence.py
index 81fb172b1acdacad24a6a17a37cb53cc499c2aff..3cc82e6db4d61e51d2fab557377533054a3deb39 100644
--- a/Trigger/TrigTools/TrigInDetConf/python/TrigInDetSequence.py
+++ b/Trigger/TrigTools/TrigInDetConf/python/TrigInDetSequence.py
@@ -1,7 +1,9 @@
-# Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
+# Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 
 from __future__ import print_function
 
+# flake8: noqa (trigger legacy code)
+
 #
 #  provisionally a copy of InDetRecExample
 #