diff --git a/poky/scripts/lib/devtool/standard.py b/poky/scripts/lib/devtool/standard.py
index 4b50e3c..c98bfe8 100644
--- a/poky/scripts/lib/devtool/standard.py
+++ b/poky/scripts/lib/devtool/standard.py
@@ -520,7 +520,9 @@
         for event in history:
             if not 'flag' in event:
                 if event['op'].startswith((':append[', ':prepend[')):
-                    extra_overrides.append(event['op'].split('[')[1].split(']')[0])
+                    override = event['op'].split('[')[1].split(']')[0]
+                    if not override.startswith('pn-'):
+                        extra_overrides.append(override)
         # We want to remove duplicate overrides. If a recipe had multiple
         # SRC_URI_override += values it would cause mulitple instances of
         # overrides. This doesn't play nicely with things like creating a
@@ -1604,6 +1606,19 @@
     if not os.path.exists(append):
         raise DevtoolError('unable to find workspace bbappend for recipe %s' %
                            recipename)
+    srctreebase = workspace[recipename]['srctreebase']
+    relpatchdir = os.path.relpath(srctreebase, srctree)
+    if relpatchdir == '.':
+        patchdir_params = {}
+    else:
+        patchdir_params = {'patchdir': relpatchdir}
+
+    def srcuri_entry(fname):
+        if patchdir_params:
+            paramstr = ';' + ';'.join('%s=%s' % (k,v) for k,v in patchdir_params.items())
+        else:
+            paramstr = ''
+        return 'file://%s%s' % (basepath, paramstr)
 
     initial_rev, update_rev, changed_revs, filter_patches = _get_patchset_revs(srctree, append, initial_rev, force_patch_refresh)
     if not initial_rev:
@@ -1625,7 +1640,6 @@
             new_f = {}
             del_f = {}
         else:
-            srctreebase = workspace[recipename]['srctreebase']
             upd_f, new_f, del_f = _export_local_files(srctree, rd, local_files_dir, srctreebase)
 
         remove_files = []
@@ -1661,14 +1675,15 @@
                     removedentries, remaining = _remove_file_entries(
                                                     srcuri, remove_files)
                     if removedentries or remaining:
-                        remaining = ['file://' + os.path.basename(item) for
+                        remaining = [srcuri_entry(os.path.basename(item)) for
                                      item in remaining]
                         removevalues = {'SRC_URI': removedentries + remaining}
                 appendfile, destpath = oe.recipeutils.bbappend_recipe(
                                 rd, appendlayerdir, files,
                                 wildcardver=wildcard_version,
                                 removevalues=removevalues,
-                                redirect_output=dry_run_outdir)
+                                redirect_output=dry_run_outdir,
+                                params=[patchdir_params] * len(files))
             else:
                 logger.info('No patches or local source files needed updating')
         else:
@@ -1692,7 +1707,7 @@
                     # replace the entry in SRC_URI with our local version
                     logger.info('Replacing remote patch %s with updated local version' % basepath)
                     path = os.path.join(files_dir, basepath)
-                    _replace_srcuri_entry(srcuri, basepath, 'file://%s' % basepath)
+                    _replace_srcuri_entry(srcuri, basepath, srcuri_entry(basepath))
                     updaterecipe = True
                 else:
                     logger.info('Updating patch %s%s' % (basepath, dry_run_suffix))
@@ -1706,7 +1721,7 @@
                            os.path.join(files_dir, basepath),
                            dry_run_outdir=dry_run_outdir,
                            base_outdir=recipedir)
-                srcuri.append('file://%s' % basepath)
+                srcuri.append(srcuri_entry(basepath))
                 updaterecipe = True
             for basepath, path in new_p.items():
                 logger.info('Adding new patch %s%s' % (basepath, dry_run_suffix))
@@ -1714,7 +1729,7 @@
                            os.path.join(files_dir, basepath),
                            dry_run_outdir=dry_run_outdir,
                            base_outdir=recipedir)
-                srcuri.append('file://%s' % basepath)
+                srcuri.append(srcuri_entry(basepath))
                 updaterecipe = True
             # Update recipe, if needed
             if _remove_file_entries(srcuri, remove_files)[0]:
diff --git a/poky/scripts/lib/recipetool/create_buildsys_python.py b/poky/scripts/lib/recipetool/create_buildsys_python.py
index f4f51c8..5686a62 100644
--- a/poky/scripts/lib/recipetool/create_buildsys_python.py
+++ b/poky/scripts/lib/recipetool/create_buildsys_python.py
@@ -209,6 +209,18 @@
                             continue
 
                         if line.startswith('['):
+                            # PACKAGECONFIG must not contain expressions or whitespace
+                            line = line.replace(" ", "")
+                            line = line.replace(':', "")
+                            line = line.replace('.', "-dot-")
+                            line = line.replace('"', "")
+                            line = line.replace('<', "-smaller-")
+                            line = line.replace('>', "-bigger-")
+                            line = line.replace('_', "-")
+                            line = line.replace('(', "")
+                            line = line.replace(')', "")
+                            line = line.replace('!', "-not-")
+                            line = line.replace('=', "-equals-")
                             current_feature = line[1:-1]
                         elif current_feature:
                             extras_req[current_feature].append(line)
@@ -297,6 +309,7 @@
                 lines_after.append('# The following configs & dependencies are from setuptools extras_require.')
                 lines_after.append('# These dependencies are optional, hence can be controlled via PACKAGECONFIG.')
                 lines_after.append('# The upstream names may not correspond exactly to bitbake package names.')
+                lines_after.append('# The configs are might not correct, since PACKAGECONFIG does not support expressions as may used in requires.txt - they are just replaced by text.')
                 lines_after.append('#')
                 lines_after.append('# Uncomment this line to enable all the optional features.')
                 lines_after.append('#PACKAGECONFIG ?= "{}"'.format(' '.join(k.lower() for k in extras_req)))
diff --git a/poky/scripts/lib/scriptutils.py b/poky/scripts/lib/scriptutils.py
index adf8147..f7c1bd9 100644
--- a/poky/scripts/lib/scriptutils.py
+++ b/poky/scripts/lib/scriptutils.py
@@ -5,7 +5,6 @@
 # SPDX-License-Identifier: GPL-2.0-only
 #
 
-import argparse
 import glob
 import logging
 import os
@@ -25,7 +24,7 @@
     def __init__(self, keepalive=True, **kwargs):
         super().__init__(**kwargs)
         if keepalive is True:
-            keepalive = 5000 # default timeout
+            keepalive = 5000  # default timeout
         self._timeout = threading.Condition()
         self._stop = False
 
@@ -36,9 +35,9 @@
                 with self._timeout:
                     if not self._timeout.wait(keepalive):
                         self.emit(logging.LogRecord("keepalive", logging.INFO,
-                            None, None, "Keepalive message", None, None))
+                                                    None, None, "Keepalive message", None, None))
 
-        self._thread = threading.Thread(target = thread, daemon = True)
+        self._thread = threading.Thread(target=thread, daemon=True)
         self._thread.start()
 
     def close(self):
@@ -72,16 +71,15 @@
 
     for handler in logger.handlers:
         if (isinstance(handler, logging.StreamHandler) and
-            isinstance(handler.formatter, BBLogFormatter)):
+                isinstance(handler.formatter, BBLogFormatter)):
             if color == 'always' or (color == 'auto' and handler.stream.isatty()):
                 handler.formatter.enable_color()
 
 
 def load_plugins(logger, plugins, pluginpath):
-
     def load_plugin(name):
         logger.debug('Loading plugin %s' % name)
-        spec = importlib.machinery.PathFinder.find_spec(name, path=[pluginpath] )
+        spec = importlib.machinery.PathFinder.find_spec(name, path=[pluginpath])
         if spec:
             mod = importlib.util.module_from_spec(spec)
             spec.loader.exec_module(mod)