diff --git a/.gitignore b/.gitignore
index 143cc924..35ce77f0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,6 +28,7 @@ tools/pip/**/*.egg-info
 tools/conda/epics-base-conda/meta.yaml
 tools/conda/pvapy-boost-conda/meta.yaml
 tools/conda/pvapy-conda/meta.yaml
+pvaccess/pvaccess.so
 wheelhouse
 
 
diff --git a/documentation/RELEASE_NOTES.md b/documentation/RELEASE_NOTES.md
index 76e00667..7f806456 100644
--- a/documentation/RELEASE_NOTES.md
+++ b/documentation/RELEASE_NOTES.md
@@ -1,4 +1,4 @@
-## Release 4.1.0 (2022/01/25)
+## Release 4.1.0 (2022/01/26)
 
 - introduced PVA server mirror class
 - added distributor plugin for the PVA server (see the
diff --git a/test/run_tests.sh b/test/run_tests.sh
index 7b70ade3..9bd8968f 100755
--- a/test/run_tests.sh
+++ b/test/run_tests.sh
@@ -4,7 +4,7 @@ echo "Starting test server"
 python testServer.py 30 &
 
 echo "Starting tests"
-nosetests -sv
+nose2 -v
 
 wait
 echo "Tests done"
diff --git a/tools/autoconf/m4/ax_pva_py.m4 b/tools/autoconf/m4/ax_pva_py.m4
index d779439a..fe01de37 100644
--- a/tools/autoconf/m4/ax_pva_py.m4
+++ b/tools/autoconf/m4/ax_pva_py.m4
@@ -17,7 +17,7 @@
 #   and this notice are preserved. This file is offered as-is, without any
 #   warranty.
 
-#serial 4
+#serial 5
 
 AC_DEFUN([AX_PVAPY],
 
@@ -147,12 +147,17 @@ AC_DEFUN([AX_PVAPY],
     PVAPY_LDFLAGS=`echo $(printf "%s\n" $PVAPY_LDFLAGS | sort -u)`
     PVAPY_LD_LIBRARY_PATH=`echo $PVAPY_LDFLAGS | sed 's?-L??g' | sed 's? ?:?g' | sed 's?:-l.*:?:?g' | sed 's?:-l.*??g'`
 
+    PYTHON_MAJOR_VERSION=`python$PYTHON_VERSION -c "import sys; print(sys.version.split()[[0]].split('.')[[0]])"`
+    PYTHON_MINOR_VERSION=`python$PYTHON_VERSION -c "import sys; print(sys.version.split()[[0]].split('.')[[1]])"`
+    PYTHON_MAJOR_MINOR_VERSION=$PYTHON_MAJOR_VERSION.$PYTHON_MINOR_VERSION
+
     AC_MSG_NOTICE([Determined BOOST_PYTHON_NUMPY_CPPFLAGS: $BOOST_PYTHON_NUMPY_CPPFLAGS])
     AC_MSG_NOTICE([Determined BOOST_PYTHON_NUMPY_LDFLAGS: $BOOST_PYTHON_NUMPY_LDFLAGS])
     AC_MSG_NOTICE([Determined BOOST_NUMPY_CPPFLAGS: $BOOST_NUMPY_CPPFLAGS])
     AC_MSG_NOTICE([Determined BOOST_NUMPY_LDFLAGS: $BOOST_NUMPY_LDFLAGS])
     AC_MSG_NOTICE([Determined BOOST_CPPFLAGS: $BOOST_CPPFLAGS])
     AC_MSG_NOTICE([Determined BOOST_LDFLAGS: $BOOST_LDFLAGS])
+    AC_MSG_NOTICE([Determined PYTHON_MAJOR_MINOR_VERSION: $PYTHON_MAJOR_MINOR_VERSION])
     AC_MSG_NOTICE([Determined PYTHON_CPPFLAGS: $PYTHON_CPPFLAGS])
     AC_MSG_NOTICE([Determined PYTHON_LDFLAGS: $PYTHON_LDFLAGS])
 
@@ -186,11 +191,10 @@ AC_DEFUN([AX_PVAPY],
     AC_MSG_NOTICE([Created $release_local file])
 
     # create CONFIG_SITE.local
-    PVAPY_MAJOR_MINOR_VERSION=`python$PYTHON_VERSION -c 'import sys; print(sys.version[[:3]])'`
     PVAPY_PYTHON=`which python$PYTHON_VERSION`
     PVAPY_PYTHON_DIR=`dirname $PVAPY_PYTHON`
     PVAPY_HOST_ARCH=$EPICS_HOST_ARCH
-    PVAPY_PYTHONPATH=$PVAPY_TOP/lib/python/$PVAPY_MAJOR_MINOR_VERSION/$PVAPY_HOST_ARCH
+    PVAPY_PYTHONPATH=$PVAPY_TOP/lib/python/$PYTHON_MAJOR_MINOR_VERSION/$PVAPY_HOST_ARCH
     PVAPY_SPHINX_BUILD=`which sphinx-build 2> /dev/null`
 
     echo "PVAPY_CPPFLAGS = $PVAPY_CPPFLAGS" >> $config_site_local
@@ -200,7 +204,7 @@ AC_DEFUN([AX_PVAPY],
     echo "PVA_RPC_API_VERSION = $PVA_RPC_API_VERSION" >> $config_site_local
     echo "HAVE_BOOST_NUMPY = $HAVE_BOOST_NUMPY" >> $config_site_local
     echo "HAVE_BOOST_PYTHON_NUMPY = $HAVE_BOOST_PYTHON_NUMPY" >> $config_site_local
-    echo "PYTHON_VERSION = $PVAPY_MAJOR_MINOR_VERSION" >> $config_site_local
+    echo "PYTHON_VERSION = $PYTHON_MAJOR_MINOR_VERSION" >> $config_site_local
     echo "PVAPY_PYTHON = $PVAPY_PYTHON" >> $config_site_local
     echo "PVAPY_PYTHONPATH = $PVAPY_PYTHONPATH" >> $config_site_local
     echo "PVAPY_LD_LIBRARY_PATH = $PVAPY_LD_LIBRARY_PATH" >> $config_site_local
@@ -208,7 +212,7 @@ AC_DEFUN([AX_PVAPY],
     echo "PVAPY_EPICS_BASE = $EPICS_BASE" >> $config_site_local
     echo "PVAPY_EPICS4_DIR = $EPICS4_DIR" >> $config_site_local
     echo "PVAPY_HOST_ARCH = $PVAPY_HOST_ARCH" >> $config_site_local
-    echo "PVAPY_SETUP_SH = $PWD/bin/$PVAPY_HOST_ARCH/pvapy_setup_full.$PVAPY_MAJOR_MINOR_VERSION.sh" >> $config_site_local
+    echo "PVAPY_SETUP_SH = $PWD/bin/$PVAPY_HOST_ARCH/pvapy_setup_full.$PYTHON_MAJOR_MINOR_VERSION.sh" >> $config_site_local
     AC_MSG_NOTICE([Created $config_site_local file])
 
     # create setup files
@@ -217,25 +221,33 @@ AC_DEFUN([AX_PVAPY],
 
     # create SETUP_PYTHONPATH.SH
     setup_sh=$PVAPY_TOP/configure/SETUP_PYTHONPATH.SH
-    setup_sh_local=$LOCAL_SETUP_DIR/pvapy_setup_pythonpath.$PVAPY_MAJOR_MINOR_VERSION.sh
+    setup_sh_local=$LOCAL_SETUP_DIR/pvapy_setup_pythonpath.$PYTHON_MAJOR_MINOR_VERSION.sh
     eval "cat $setup_sh | sed 's?PVAPY_PYTHON_DIR?$PVAPY_PYTHON_DIR?g' | sed 's?PVAPY_PYTHONPATH?$PVAPY_PYTHONPATH?g' | sed 's?PVAPY_LD_LIBRARY_PATH?$PVAPY_LD_LIBRARY_PATH?g' > $setup_sh_local"
     AC_MSG_NOTICE([Created $setup_sh_local file])
     
     # create SETUP_FULL.SH
     setup_sh=$PVAPY_TOP/configure/SETUP_FULL.SH
-    setup_sh_local=$LOCAL_SETUP_DIR/pvapy_setup_full.$PVAPY_MAJOR_MINOR_VERSION.sh
+    setup_sh_local=$LOCAL_SETUP_DIR/pvapy_setup_full.$PYTHON_MAJOR_MINOR_VERSION.sh
     eval "cat $setup_sh | sed 's?PVAPY_PYTHON_DIR?$PVAPY_PYTHON_DIR?g' | sed 's?PVAPY_PYTHONPATH?$PVAPY_PYTHONPATH?g' | sed 's?PVAPY_LD_LIBRARY_PATH?$PVAPY_LD_LIBRARY_PATH?g' | sed 's?export PVAPY_SPHINX_BUILD.*?export PVAPY_SPHINX_BUILD=$PVAPY_SPHINX_BUILD?g' > $setup_sh_local"
     AC_MSG_NOTICE([Created $setup_sh_local file])
     
     # create SETUP_PYTHONPATH.CSH
     setup_csh=$PVAPY_TOP/configure/SETUP_PYTHONPATH.CSH
-    setup_csh_local=$LOCAL_SETUP_DIR/pvapy_setup_pythonpath.$PVAPY_MAJOR_MINOR_VERSION.csh
+    setup_csh_local=$LOCAL_SETUP_DIR/pvapy_setup_pythonpath.$PYTHON_MAJOR_MINOR_VERSION.csh
     eval "cat $setup_csh | sed 's?PVAPY_PYTHON_DIR?$PVAPY_PYTHON_DIR?g' | sed 's?PVAPY_PYTHONPATH?$PVAPY_PYTHONPATH?g' | sed 's?PVAPY_LD_LIBRARY_PATH?$PVAPY_LD_LIBRARY_PATH?g' > $setup_csh_local"
     AC_MSG_NOTICE([Created $setup_csh_local file])
     
     # create SETUP_FULL.CSH
     setup_csh=$PVAPY_TOP/configure/SETUP_FULL.CSH
-    setup_csh_local=$LOCAL_SETUP_DIR/pvapy_setup_full.$PVAPY_MAJOR_MINOR_VERSION.csh
+    setup_csh_local=$LOCAL_SETUP_DIR/pvapy_setup_full.$PYTHON_MAJOR_MINOR_VERSION.csh
     eval "cat $setup_csh | sed 's?PVAPY_PYTHON_DIR?$PVAPY_PYTHON_DIR?g' | sed 's?PVAPY_PYTHONPATH?$PVAPY_PYTHONPATH?g' | sed 's?PVAPY_LD_LIBRARY_PATH?$PVAPY_LD_LIBRARY_PATH?g' | sed 's?setenv PVAPY_SPHINX_BUILD.*?setenv PVAPY_SPHINX_BUILD $PVAPY_SPHINX_BUILD?g' > $setup_csh_local"
     AC_MSG_NOTICE([Created $setup_csh_local file])
+
+    # configure pvaccess module
+    cd $PVAPY_TOP/pvaccess > /dev/null 
+    rm -f pvaccess.so
+    ln -s $PVAPY_PYTHONPATH/pvaccess.so .
+    cd $current_dir > /dev/null
+    AC_MSG_NOTICE([Created link $PVAPY_PYTHONPATH/pvaccess.so])
 ])
+    
diff --git a/tools/autoconf/m4/ax_python_devel.m4 b/tools/autoconf/m4/ax_python_devel.m4
index e563a708..ecb45b9b 100644
--- a/tools/autoconf/m4/ax_python_devel.m4
+++ b/tools/autoconf/m4/ax_python_devel.m4
@@ -191,7 +191,7 @@ EOD`
 				ac_python_version=$PYTHON_VERSION
 			else
 				ac_python_version=`$PYTHON -c "import sys; \
-					print (sys.version[[:3]])"`
+					print('.'.join(sys.version.split()[[0]].split('.')[[0:2]]))"`
 			fi
 		fi
 
diff --git a/tools/pip/epics-base-pip/Makefile b/tools/pip/epics-base-pip/Makefile
index 79b2be35..6b39442c 100644
--- a/tools/pip/epics-base-pip/Makefile
+++ b/tools/pip/epics-base-pip/Makefile
@@ -14,6 +14,9 @@ build: configure
 	python setup.py build_ext 
 
 clean: 
-	rm -rf $(BUILD_DIR) $(DIST_DIR) $(PACKAGE_DIR)
+	rm -rf $(BUILD_DIR) $(PACKAGE_DIR) *.egg-info
 
-distclean: clean
+tidy: clean
+	rm -rf $(DIST_DIR) 
+
+distclean: tidy
diff --git a/tools/pip/pvapy-boost-pip/Makefile b/tools/pip/pvapy-boost-pip/Makefile
index 24616250..d3bacd4e 100644
--- a/tools/pip/pvapy-boost-pip/Makefile
+++ b/tools/pip/pvapy-boost-pip/Makefile
@@ -14,6 +14,9 @@ build: configure
 	python setup.py build_ext 
 
 clean: 
-	rm -rf $(BUILD_DIR) $(DIST_DIR) $(PACKAGE_DIR)
+	rm -rf $(BUILD_DIR) $(PACKAGE_DIR) *.egg-info
 
-distclean: clean
+tidy: clean
+	rm -rf $(DIST_DIR) 
+
+distclean: tidy
diff --git a/tools/pip/pvapy-boost-pip/build.linux.sh b/tools/pip/pvapy-boost-pip/build.linux.sh
index be8801b7..6e38dd3c 100755
--- a/tools/pip/pvapy-boost-pip/build.linux.sh
+++ b/tools/pip/pvapy-boost-pip/build.linux.sh
@@ -23,6 +23,7 @@ BOOST_DOWNLOAD_VERSION=`echo ${BOOST_VERSION} | sed 's?\.?_?g'`
 BOOST_DOWNLOAD_URL=https://sourceforge.net/projects/boost/files/boost/$BOOST_VERSION/boost_${BOOST_DOWNLOAD_VERSION}.tar.gz
 
 mkdir -p $BUILD_SAVE_DIR
+mkdir -p $BOOST_DIR
 mkdir -p $BUILD_DIR
 cd $BUILD_DIR
 
@@ -103,4 +104,4 @@ done
 
 # Save build so we can reuse it
 BOOST_SAVE_DIR=$BUILD_SAVE_DIR/pvapy-boost-${BOOST_VERSION}-py${PYTHON_MAJOR_MINOR_VERSION}
-rsync -arlP $BOOST_DIR/ $BOOST_SAVE_DIR/
+rsync -arlP --exclude 'cmake' $BOOST_DIR/ $BOOST_SAVE_DIR/
diff --git a/tools/pip/pvapy-pip/Makefile b/tools/pip/pvapy-pip/Makefile
index 84b780f8..7572e069 100644
--- a/tools/pip/pvapy-pip/Makefile
+++ b/tools/pip/pvapy-pip/Makefile
@@ -17,7 +17,11 @@ build: configure
 
 test: 
 	./run_test.sh
+
 clean: 
-	rm -rf $(BUILD_DIR) $(DIST_DIR) $(PACKAGE_DIRS) MANIFEST
+	rm -rf $(BUILD_DIR) $(PACKAGE_DIRS) MANIFEST *.egg-info
+
+tidy: clean
+	rm -rf $(DIST_DIR) 
 
-distclean: clean
+distclean: tidy
diff --git a/tools/pip/pvapy-pip/build.linux.sh b/tools/pip/pvapy-pip/build.linux.sh
index 4a8ed15a..36959192 100755
--- a/tools/pip/pvapy-pip/build.linux.sh
+++ b/tools/pip/pvapy-pip/build.linux.sh
@@ -111,11 +111,8 @@ rsync -arvl documentation/sphinx/_build/html $PVACCESS_DOC_DIR/
 echo "Copying data files"
 rsync -arvl README.md $PVACCESS_DOC_DIR/
 
-echo "Installing pvapy library"
-rsync -arv $PVACCESS_BUILD_LIB_DIR/$PVACCESS_LIB $PVACCESS_DIR/
-
 echo "Copying module files"
-rsync -arvl pvapy pvaccess $TOP_DIR/
+rsync -arvl --exclude '*.so' pvapy pvaccess $TOP_DIR/
 
 echo "Updating python module init files"
 for f in $PVACCESS_DIR/__init__.py $PVAPY_DIR/__init__.py; do
@@ -123,6 +120,9 @@ for f in $PVACCESS_DIR/__init__.py $PVAPY_DIR/__init__.py; do
     eval $cmd
 done
 
+echo "Installing pvaccess library"
+rsync -arv $PVACCESS_BUILD_LIB_DIR/$PVACCESS_LIB $PVACCESS_DIR/
+
 echo "Copying dependencies"
 EPICS_LIBS=`ls -c1 $EPICS_BASE_DIR/lib/$EPICS_HOST_ARCH/*.so`
 BOOST_LIBS=`ls -c1 $BOOST_DIR/lib/$BOOST_HOST_ARCH/*.so`
diff --git a/tools/pip/pvapy-pip/run_test.sh b/tools/pip/pvapy-pip/run_test.sh
index ff544681..1cc6df69 100755
--- a/tools/pip/pvapy-pip/run_test.sh
+++ b/tools/pip/pvapy-pip/run_test.sh
@@ -7,7 +7,7 @@ echo "Starting test server"
 python testServer.py 30  &
 
 echo "Starting tests"
-nosetests -sv 
+nose2 -v 
 
 wait 
 echo "Tests done"