diff --git a/.github/workflows/develop.yml b/.github/workflows/develop.yml
index 69f50f752..5e66c7b08 100644
--- a/.github/workflows/develop.yml
+++ b/.github/workflows/develop.yml
@@ -15,24 +15,18 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    # this is to fix GIT not liking owner of the checkout dir
-    - name: Set ownership
-      run: |
-        chown -R $(id -u):$(id -g) $PWD
-        
-    - name: Update pip
-      run: python3 -m pip install --upgrade pip
-
-    - name: install gridlabd
+    - name: Build gridlabd
       run: |
+        set +x
+        chown -R $(id -u):$(id -g) $PWD /github/home
         autoreconf -isf
         ./configure
-        make -j$(($(nproc)*3)) system
+        make -j$(($(nproc)*3)) python-install system
 
     - name: Install openfido
       run: curl -sL https://raw.githubusercontent.com/openfido/cli/main/install.sh | bash
       
-    - name: Validate build
+    - name: Validate system
       run: |
         gridlabd -D keep_progress=TRUE -T 0 --validate -D github_actions=yes || ( utilities/save_validation_errors ; false )
         
diff --git a/.gitignore b/.gitignore
index 3a94432da..51ae8189c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -140,6 +140,10 @@ fault_check.txt
 # files that should be ignored by git
 *_ignore.*
 
+# requirements files
+requirements.txt
+python/venv
+
 # specific outputs that should be ignored
 python/example.png
 models/ieee123/config/local.glm
diff --git a/Makefile.am b/Makefile.am
index 8475f4fdf..d0e252b05 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -10,6 +10,14 @@
 # Authors:
 #   DP Chassin (dchassin@slac.stanford.edu)
 
+# !!! must match version specified in configure.ac
+PYVER = 3.10
+PYCFLAGS = $(shell python3.10-config --cflags)
+PYLDFLAGS = $(shell python3.10-config --ldflags)
+
+SYSPYTHON = python$(PYVER)
+PYTHONCONFIG = $(SYSPYTHON)-config
+
 AM_INIT_AUTOMAKE = subdir-objects 
 AUTOMAKE_OPTIONS = -Wno-portability
 ACLOCAL_AMFLAGS = -I m4
@@ -18,27 +26,30 @@ CC = $(PTHREAD_CC)
 CXX = $(PTHREAD_CXX)
 
 AM_CPPFLAGS = -Wall -fPIC
-AM_CPPFLAGS += -I$(top_srcdir)/source -I$(top_srcdir)/build-dir/source
+AM_CPPFLAGS += -I$(top_srcdir)/source #-I$(top_srcdir)/build-dir/source
 AM_CPPFLAGS += $(GLD_CPPFLAGS)
+AM_CPPFLAGS += $(PYCFLAGS)
 
 AM_CFLAGS = -Wall
-AM_CFLAGS +=  -I$(top_srcdir)/source -I$(top_srcdir)/build-dir/source
+AM_CFLAGS +=  -I$(top_srcdir)/source #-I$(top_srcdir)/build-dir/source
 AM_CFLAGS += $(PTHREAD_CFLAGS)
-AM_CFLAGS += $(GLD_CFLAGS)  -I$(top_srcdir)/build-dir/source
+AM_CFLAGS += $(GLD_CFLAGS)  #-I$(top_srcdir)/build-dir/source
+AM_CFLAGS += $(PYCFLAGS)
 
 AM_CXXFLAGS = -Wall -fPIC
 AM_CXXFLAGS += $(PTHREAD_CFLAGS)
-AM_CXXFLAGS += $(GLD_CXXFLAGS) -I$(top_srcdir)/build-dir/source
+AM_CXXFLAGS += $(GLD_CXXFLAGS) #-I$(top_srcdir)/build-dir/source
+AM_CXXFLAGS += $(PYCFLAGS)
 
-AM_LDFLAGS =
+AM_LDFLAGS = $(PYLDFLAGS)
 AM_LDFLAGS += -no-undefined
 AM_LDFLAGS += -module
 AM_LDFLAGS += -avoid-version
 AM_LDFLAGS += -export-dynamic
-AM_LDFLAGS += $(GLD_LDFLAGS)
+AM_LDFLAGS += $(GLD_LDFLAGS) -lpython$(PYVER)
 
 # makefile fragments populate these variables
-BUILT_SOURCES =
+BUILT_SOURCES = 
 CLEANFILES =
 EXTRA_DIST =
 dist_pkgdata_DATA =
@@ -49,8 +60,6 @@ bin_PROGRAMS =
 bin_SCRIPTS =
 dist_doc_DATA =
 
-python_requirements = $(shell find $(top_srcdir) -name requirements.txt -print)
-
 docs_targets =
 
 # required modules
@@ -71,6 +80,55 @@ include $(top_srcdir)/modules.mk
 # custom modules (see ./customize)
 include $(top_srcdir)/custom.mk
 
+BUILT_SOURCES += python-requirements
+
+#
+# Post install report
+#
+
+install-exec-hook: | index docs
+	@cp ${top_srcdir}/{COPYRIGHT,LICENSE} $(prefix)
+	@echo ""
+	@echo "Install complete. Here are some useful commands now:"
+	@echo ""
+	@echo "To include this version in your command path:"
+	@echo "  export PATH='$(DESTDIR)$(bindir):$$PATH'"
+	@echo ""
+	@echo "To run this version directly without using the command path:"
+	@echo "  $(DESTDIR)$(bindir)/gridlabd"
+	@echo ""
+	@echo "To make this version the default for all users on this system:"
+	@echo "  $(DESTDIR)$(bindir)/gridlabd version set $(shell basename $(exec_prefix))"
+	@echo ""
+
+#
+# Python setup
+#
+
+PYENV=$(bindir)/pkgenv
+PYBIN=$(PYENV)/bin
+PYLIB=$(PYENV)/lib
+PYINC=$(PYENV)/include
+ENVPYTHON=$(PYBIN)/python$(PYVER)
+PYACTIVATE=source $(PYBIN)/activate
+
+python-requirements: | $(PYENV) 
+
+# NB: it's ok to use the runner's python to generate the requirements.txt file
+requirements.txt: python/requirements.csv
+	@python3 -m pip -q install pandas==2.0.0
+	@python3 python/requirements.py $< >$@
+
+$(PYENV): requirements.txt
+	@echo "Processing python requirements..."
+	@mkdir -p $(PYBIN) $(PYLIB) $(PYINC)
+	@$(SYSPYTHON) -m venv --symlinks $(PYENV)
+	@$(ENVPYTHON) -m pip install --upgrade pip
+	@$(ENVPYTHON) -m pip install pandas==2.0.0
+	@$(ENVPYTHON) python/requirements.py --buildenv | bash
+	@$(ENVPYTHON) -m pip install -r requirements.txt 
+	@touch $(PYENV)
+
 # for doxygen commands
 include $(top_srcdir)/aminclude.mk
 
@@ -285,24 +343,9 @@ distclean-local: python-clean
 libtool: $(LIBTOOL_DEPS)
 	$(SHELL) $(PWD)/config.status libtool > /dev/null
 
-install-exec-hook: index python-requirements docs
-	@cp ${top_srcdir}/{COPYRIGHT,LICENSE} $(prefix)
-	@echo ""
-	@echo "Install complete. Here are some useful commands now:"
-	@echo ""
-	@echo "To include this version in your command path:"
-	@echo "  export PATH='$(DESTDIR)$(bindir):$$PATH'"
-	@echo ""
-	@echo "To run this version directly without using the command path:"
-	@echo "  $(DESTDIR)$(bindir)/gridlabd"
-	@echo ""
-	@echo "To make this version the default for all users on this system:"
-	@echo "  $(DESTDIR)$(bindir)/gridlabd version set $(shell basename $(exec_prefix))"
-	@echo ""
-
-python-requirements: $(python_requirements)
-	@echo "Updating python requirements..."
-	@$(bindir)/pkgenv/bin/python3 -m pip install -q -r $(subst $(subst ,, ), -r ,$(python_requirements))
+#
+# Run this after changes that affect build-aux/version.sh output
+#
 
 reconfigure: distclean
 	autoreconf -isf && $(PWD)/configure --quiet
diff --git a/build-aux/version.sh b/build-aux/version.sh
index 1537e3b2d..4ccb6370d 100755
--- a/build-aux/version.sh
+++ b/build-aux/version.sh
@@ -36,6 +36,15 @@ case $1 in
         echo "$PKG" ;;
     --package-name | -P)
         echo "$NAM" ;;
+    --sysspec )
+        if [ "$(uname -s)" == "Darwin" ]; then
+            echo darwin$(uname -r | cut -f1 -d.)-$(uname -m)
+        elif [ -f "/etc/os-release" ]; then
+            echo $(grep ^ID= /etc/os-release | cut -f2 -d= | tr -d '"')-$(grep ^VERSION_ID= /etc/os-release | cut -f2 -d= | tr -d '"')-$(uname -m)
+        else
+            echo $(uname -s)$(uname -r)-$(uname -m)
+        fi
+        ;;
     --help | -h)
         echo "Syntax: build-aux/version.sh <option>
 Options:
@@ -47,5 +56,6 @@ Options:
   --package|-p      output package PACKAGE
   --package-name|-P output package name PACKAGE_NAME
   --name|-m         output install name REV_MAJOR.REV_MINOR.REV_PATCH-NUMBER-BRANCH
+  --sysspec         output system specification OSVER-ARCH
   --help|-h         output this help" ;;
 esac
diff --git a/configure.ac b/configure.ac
index 97fd4acb8..04183cf4b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -52,6 +52,7 @@ AC_CONFIG_AUX_DIR([build-aux])
 ###############################################################################
 # Init automake
 ###############################################################################
+
 AM_INIT_AUTOMAKE([foreign subdir-objects -Wall])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES])
 
@@ -578,103 +579,16 @@ BINDIR=$DSTDIR/bin
 LIBDIR=$DSTDIR/lib/gridlabd
 ETCDIR=$DSTDIR/share/gridlabd
 DOCDIR=$DSTDIR/share/doc/gridlabd
-ENVDIR=$BINDIR/pkgenv
-PYDIR=$ENVDIR/bin
-PYEXE=3.10
-
-echo "os: $host_os"
-echo "cpu: $host_cpu"
 
-# Verify python version
-if test ! -d "$BINDIR/pkgenv"; then
-    mkdir -p "$BINDIR"
-fi
+PYTHON_REQ=3.10
 
-if echo "$host_os" | grep '^linux' >/dev/null; then
-    # Check for Debian or Ubuntu
-    if grep -E '^ID=(debian|ubuntu)$' /etc/*-release; then
-        # Check for Debian 10
-        if grep -E '^VERSION_ID="10"' /etc/*-release; then
-            echo "Detected Debian 10 operating system"
-            # Add Debian 10-specific configuration here
-            /usr/local/bin/python$PYEXE -m venv "$BINDIR/pkgenv"
-            "$PYDIR/python3" -m pip install --upgrade pip
-            "$PYDIR/python3" -m pip install matplotlib Pillow pandas numpy networkx pytz pysolar PyGithub scikit-learn xlrd boto3
-            "$PYDIR/python3" -m pip install IPython censusdata
-            "$PYDIR/python3" -m pip install GDAL==2.4.0
-            "$PYDIR/python3" -m pip install rasterio==1.2.10
-        elif grep -E '^VERSION_ID="9"' /etc/*-release; then
-            echo "Detected Debian 9 operating system"
-            # Add Debian 9-specific configuration here
-            /usr/local/bin/python$PYEXE  -m venv "$BINDIR/pkgenv"
-            "$PYDIR/python3" -m pip install --upgrade pip
-            "$PYDIR/python3" -m pip install matplotlib Pillow pandas numpy networkx pytz pysolar PyGithub scikit-learn xlrd boto3
-            "$PYDIR/python3" -m pip install IPython censusdata
-        else
-            echo "Detected Debian or Ubuntu operating system"
-            # Add Debian/Ubuntu-specific configuration here
-            /usr/local/bin/python$PYEXE  -m venv "$BINDIR/pkgenv"
-            "$PYDIR/python3" -m pip install --upgrade pip
-            "$PYDIR/python3" -m pip install matplotlib Pillow pandas numpy networkx pytz pysolar PyGithub scikit-learn xlrd boto3
-            "$PYDIR/python3" -m pip install IPython censusdata
-            "$PYDIR/python3" -m pip install GDAL==3.0.4
-            "$PYDIR/python3" -m pip install rasterio==1.2.10
-        fi
-
-        if test ! -d "$BINDIR/pkgenv/include/python*"; then
-            ln -sF /usr/local/bin/python${PYEXE}-config $BINDIR/pkgenv/bin/python3-config
-            ln -sF /usr/local/lib/*${PYEXE}* $BINDIR/pkgenv/lib
-            ln -sF /usr/local/include/python${PYEXE} $BINDIR/pkgenv/include
-        fi
-
-    else
-        echo "Unsupported Linux distribution"
-        exit 1
-    fi
-elif echo "$host_os" | grep '^darwin' >/dev/null; then
-    if echo "$host_cpu" | grep -E 'i386|x86_64'; then
-        echo "Detected Intel Mac operating system"
-        # Add Intel Mac-specific configuration here
-        /usr/local/bin/python$PYEXE -m venv "$BINDIR/pkgenv"
-
-        ln -sF /usr/local/opt/python@$PYEXE/Frameworks/Python.framework/Versions/$PYEXE/bin/python$PYEXE-config $BINDIR/pkgenv/bin/python3-config
-        ln -sF /usr/local/opt/python@$PYEXE/Frameworks/Python.framework/Versions/$PYEXE/include/python$PYEXE $BINDIR/pkgenv/include
-        ln -sF /usr/local/opt/python@$PYEXE/Frameworks/Python.framework/Versions/$PYEXE/lib/*${PYEXE}* $BINDIR/pkgenv/lib
-
-        $PYDIR/python3 -m ensurepip --upgrade
-        $PYDIR/python3 -m pip install matplotlib Pillow pandas numpy networkx pytz pysolar PyGithub scikit-learn xlrd boto3
-        $PYDIR/python3 -m pip install build
-        $PYDIR/python3 -m pip install pyproj wheel
-
-    elif echo "$host_cpu" | grep 'aarch64'; then
-        echo "Detected arm64 Mac operating system"
-        # Add arm64 Mac-specific configuration here
-        /opt/homebrew/bin/python$PYEXE -m venv "$BINDIR/pkgenv"
-
-        ln -sF /opt/homebrew/opt/python@$PYEXE/Frameworks/Python.framework/Versions/$PYEXE/bin/python$PYEXE-config $BINDIR/pkgenv/bin/python3-config
-        ln -sF /opt/homebrew/opt/python@$PYEXE/Frameworks/Python.framework/Versions/$PYEXE/include/python$PYEXE $BINDIR/pkgenv/include
-        ln -sF /opt/homebrew/opt/python@$PYEXE/Frameworks/Python.framework/Versions/$PYEXE/lib/*${PYEXE}* $BINDIR/pkgenv/lib
-
-        $PYDIR/python3 -m ensurepip --upgrade
-        $PYDIR/python3 -m pip install matplotlib Pillow pandas numpy networkx pytz pysolar PyGithub scikit-learn xlrd boto3
-        $PYDIR/python3 -m pip install build
-        $PYDIR/python3 -m pip install pyproj wheel
-    else
-        echo "Unknown CPU architecture on Mac operating system"
-        exit 1
-    fi
-else
-    echo "Unsupported operating system: $host_os"
-    exit 1
-fi
-
-HAVE_PYTHON="$($BINDIR/pkgenv/bin/python3 --version | cut -f2 -d' ')"
-PYTHON_EXEC="$($BINDIR/pkgenv/bin/python3 -c "import os; print(os.path.realpath('$BINDIR/pkgenv/bin/python3'))")"
-PYTHON_VER=$(echo $HAVE_PYTHON | cut -f1-2 -d.)
+AM_PATH_PYTHON([$PYTHON_REQ])
+PYTHON=$(which python$PYTHON_REQ)
+HAVE_PYTHON="$($PYTHON --version | cut -f2 -d' ')"
 AM_CONDITIONAL([HAVE_PYTHON], [test ! "x$HAVE_PYTHON" = "xno"])
 AS_IF([test "x$HAVE_PYTHON" != "xno" -a "$(uname)" == "Darwin" ],
-  [PYTHON_LIB="-lpython${PYTHON_VER} -shared -Wl-undefined,dynamic_lookup"],
-  [PYTHON_LIB="-lpython${PYTHON_VER}"])
+  [PYTHON_LIB="-lpython${PYTHON_REQ} -shared -Wl-undefined,dynamic_lookup"],
+  [PYTHON_LIB="-lpython${PYTHON_REQ}"])
 
 ###############################################################################
 # The End
@@ -690,7 +604,7 @@ AC_MSG_RESULT([
     Version: .................... $VERSION
     Branch: ..................... $PACKAGE_ORIGIN
     Install prefix: ............. ${DSTDIR/^$PWD/.}
-    Python Location: ............ $PYTHON_EXEC
+    Python binary: .............. $PYTHON
 
   Dependencies:
 
@@ -708,6 +622,7 @@ AC_MSG_RESULT([
 
   Build flags:
 
+    CFLAGS: ..................... ${CFLAGS:-(none)}
     CXXFLAGS: ................... ${CXXFLAGS:-(none)}
     LDFLAGS: .................... ${LDFLAGS:-(none)}
 
@@ -744,18 +659,9 @@ AC_MSG_RESULT([
 
         $DSTDIR/bin/$PACKAGE version set
 
-    Developer flags:
-    CFLAGS ........ "$CFLAGS -D PYTHON_EXEC='\"$PYTHON_EXEC\"'"
-    CXXFLAGS ...... "$($BINDIR/pkgenv/bin/python3-config --cflags) $CXXFLAGS -D PYTHON_EXEC='\"$PYTHON_EXEC\"'"
-    LDFLAGS ....... "$($BINDIR/pkgenv/bin/python3-config --ldflags) $PYTHON_LIB $LDFLAGS "
-
 -----------------------------------------------------------------------
 ])
 
-CFLAGS="$CFLAGS -D PYTHON_EXEC='\"$PYTHON_EXEC\"'"
-CXXFLAGS="$($BINDIR/pkgenv/bin/python3-config --cflags) $CXXFLAGS -D PYTHON_EXEC='\"$PYTHON_EXEC\"'"
-LDFLAGS="$($BINDIR/pkgenv/bin/python3-config --ldflags) $PYTHON_LIB $LDFLAGS "
-
 AC_CONFIG_FILES([Makefile])
 AC_CONFIG_FILES([gridlabd.spec])
 AC_CONFIG_FILES([source/gridlabd], [chmod +x source/gridlabd])
diff --git a/converters/Makefile.mk b/converters/Makefile.mk
index 3b6a09754..6b881e1f9 100644
--- a/converters/Makefile.mk
+++ b/converters/Makefile.mk
@@ -2,8 +2,6 @@
 # INPUT CONVERTERS
 #
 
-python_requirements += $(top_srcdir)/converters/requirements.txt
-
 # csv -> glm
 dist_pkgdata_DATA += converters/csv-ami2glm-ceus.py
 dist_pkgdata_DATA += converters/csv-ami2glm-rbsa.py
diff --git a/converters/mdb-cyme2glm.py b/converters/mdb-cyme2glm.py
index 12bdbbcb0..c63c22cb4 100644
--- a/converters/mdb-cyme2glm.py
+++ b/converters/mdb-cyme2glm.py
@@ -80,7 +80,7 @@
 	"DEBUG" : ["False"],
 	"QUIET" : ["False"],
 	"VERBOSE" : ["False"],
-	}).transpose().set_axis(["value"],axis=1,inplace=0)
+	}).transpose().set_axis(["value"],axis=1)
 config.index.name = "name" 
 
 cyme_phase_name = {0:"ABCN", 1:"A", 2:"B", 3:"C", 4:"AB", 5:"AC", 6:"BC", 7:"ABC"} # CYME phase number -> phase names
diff --git a/converters/requirements.txt b/converters/requirements.txt
deleted file mode 100644
index ebbe83f79..000000000
--- a/converters/requirements.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-folium==0.12.1
-pysolar==0.9
-simplekml==1.3.6
-networkx==2.8.8
diff --git a/geodata/autotest/unittest.sh b/geodata/autotest/unittest.sh
index 1ddc3f04f..c99fb24e0 100755
--- a/geodata/autotest/unittest.sh
+++ b/geodata/autotest/unittest.sh
@@ -4,7 +4,7 @@ DIR=${0/unittest.sh/..}
 N=0
 for F in $DIR/*.py; do
 	echo '*** '"$(basename $F) unittest"' ***' > /tmp/$$_$N.err
-	( $GLD_BIN/pkgenv/bin/python3 $F -q 2>>/tmp/$$_$N.err && rm /tmp/$$_$N.err ) &
+	( gridlabd python $F -q 2>>/tmp/$$_$N.err && rm /tmp/$$_$N.err ) &
 	N=$(($N+1))
 done
 wait
diff --git a/geodata/geodata_address.py b/geodata/geodata_address.py
index 616789bd6..6ae568c7e 100644
--- a/geodata/geodata_address.py
+++ b/geodata/geodata_address.py
@@ -137,7 +137,7 @@ def apply(data, options=default_options, config=default_config, warning=print):
                 pos = err
             import time
             time.sleep(config["sleep"])
-        if type(pos) is Exception:
+        if type(pos) is Exception or type(pos) is ModuleNotFoundError:
             raise pos
         data["longitude"] = list(map(lambda p: p.x,pos["geometry"]))
         data["latitude"] = list(map(lambda p: p.y,pos["geometry"]))
@@ -166,7 +166,7 @@ def apply(data, options=default_options, config=default_config, warning=print):
                 addr = err
             import time
             time.sleep(config["sleep"])
-        if type(addr) is Exception:
+        if type(addr) is Exception or type(addr) is ModuleNotFoundError:
             raise addr
         data["address"] = Series(addr["address"],dtype="string").tolist()
         return data
diff --git a/geodata/geodata_census.py b/geodata/geodata_census.py
index 044fc3603..3e7e137c1 100644
--- a/geodata/geodata_census.py
+++ b/geodata/geodata_census.py
@@ -90,6 +90,8 @@
 import censusdata
 
 GLD_ETC = os.getenv("GLD_ETC")
+if not GLD_ETC:
+    GLD_ETC = "/usr/local/share"
 
 default_options = {
     "state_fields" : "STUSPS",
diff --git a/geodata/geodata_elevation.py b/geodata/geodata_elevation.py
index f1a01f0c8..684518a82 100644
--- a/geodata/geodata_elevation.py
+++ b/geodata/geodata_elevation.py
@@ -122,8 +122,7 @@ def apply(data, options=default_options, config=default_config, warning=print):
     try:
         precision = int(options["precision"]["elevation"])
     except:
-        warning("elevation precision not found in options")
-        precision = 0
+        precision = default_options["precision"]["elevation"]
     global units
     if "units" not in options.keys() or options["units"] not in units.keys():
         raise Exception(f"unit '{options['units']}' or is not valid")
diff --git a/geodata/geodata_firerisk.py b/geodata/geodata_firerisk.py
index 7091f110c..c8abfe362 100644
--- a/geodata/geodata_firerisk.py
+++ b/geodata/geodata_firerisk.py
@@ -32,6 +32,8 @@
 from datetime import datetime
 
 GLD_ETC = os.getenv("GLD_ETC")
+if not GLD_ETC:
+    GLD_ETC = "/usr/local/share"
 
 today= datetime.today().strftime('%Y%m%d')
 
diff --git a/geodata/geodata_utility.py b/geodata/geodata_utility.py
index bf5121525..861038dc0 100644
--- a/geodata/geodata_utility.py
+++ b/geodata/geodata_utility.py
@@ -112,8 +112,10 @@
 from haversine import haversine_vector
 
 GLD_ETC = os.getenv("GLD_ETC")
+if not GLD_ETC:
+    GLD_ETC = "/usr/local/share"
 
-CACHEDIR = os.getenv("GLD_ETC")
+CACHEDIR = GLD_ETC
 if not CACHEDIR:
     CACHEDIR = f"{GLD_ETC}/gridlabd"
 
diff --git a/geodata/geodata_weather.py b/geodata/geodata_weather.py
index 4607c5d2c..df1913fee 100644
--- a/geodata/geodata_weather.py
+++ b/geodata/geodata_weather.py
@@ -54,11 +54,10 @@
 import haversine
 
 GLD_ETC = os.getenv("GLD_ETC")
-share = os.getenv("GLD_ETC")
-if not share:
-    share = f"{GLD_ETC}/gridlabd"
-if share not in sys.path:
-    sys.path.append(f"{GLD_ETC}/gridlabd")
+if not GLD_ETC:
+    GLD_ETC = "/usr/local/share/gridlabd"
+if GLD_ETC not in sys.path:
+    sys.path.append(GLD_ETC)
 import nsrdb_weather
 
 #
@@ -72,7 +71,7 @@
     )
 
 default_config = dict(
-    cachedir = f"{share}/weather/nsrdb"
+    cachedir = f"{GLD_ETC}/weather/nsrdb"
     )
 
 #
@@ -144,5 +143,5 @@ def test_weather(self):
             print(result)
             # self.assertEqual(result["wind"][1],12.0)
 
-    if os.path.exists("~/.nsrdb/credentials.json"):
+    if os.path.exists(f"{os.getenv('HOME')}/.nsrdb/credentials.json"):
         unittest.main()
diff --git a/geodata/requirements.txt b/geodata/requirements.txt
deleted file mode 100644
index 0b1293bea..000000000
--- a/geodata/requirements.txt
+++ /dev/null
@@ -1,9 +0,0 @@
-haversine==2.3.0
-Fiona==1.8.22
-pandas==1.4.3
-Shapely==1.8.4
-geopandas>=0.9.0
-CensusData==1.13
-openpyxl==3.0.7
-cfo==1.0.1
-ipykernel==5.5.5
diff --git a/module/generators/central_dg_control.cpp b/module/generators/central_dg_control.cpp
index 59c647f07..a83a4ac5b 100644
--- a/module/generators/central_dg_control.cpp
+++ b/module/generators/central_dg_control.cpp
@@ -371,7 +371,6 @@ TIMESTAMP central_dg_control::sync(TIMESTAMP t0, TIMESTAMP t1)
 	double Q_avail_3p = 0.0;
 	double this_Q;
 	double P_disp_3p_no_control = 0;
-	double Q_disp_3p_no_control = 0;
 
 	//The target power factor is the midpoint of the two values specifying the allowable band. However, due to the 
 	//discontinuous/nonlinear nature of the signed power factor used in GridLAB-D, calculation of the midpoint is 
@@ -395,10 +394,8 @@ TIMESTAMP central_dg_control::sync(TIMESTAMP t0, TIMESTAMP t1)
 	for(i = 0; i < inverter_count; i++)
 	{
 		P_disp_3p_no_control += inverter_set[i]->P_Out;
-		Q_disp_3p_no_control += inverter_set[i]->Q_Out;
-	}
+	}	
 
-	
 	P_gen_solar[0] = P_gen_solar[1] = P_gen_solar[2] = P_gen_solar_3p = 0.0;
 	Q_gen_solar[0] = Q_gen_solar[1] = Q_gen_solar[2] = Q_gen_solar_3p =0.0;
 	//Calculate solar inverter power output for this time step.
diff --git a/module/powerflow/fuse.cpp b/module/powerflow/fuse.cpp
index 2555c5f78..26ed4c6f8 100644
--- a/module/powerflow/fuse.cpp
+++ b/module/powerflow/fuse.cpp
@@ -647,7 +647,6 @@ TIMESTAMP fuse::sync(TIMESTAMP t0)
 TIMESTAMP fuse::postsync(TIMESTAMP t0)
 {
 	size_t jindex;
-	unsigned char goodphases = 0x00;
 	TIMESTAMP Ret_Val[3], t1;
 
 	//FBS legacy code
@@ -660,7 +659,6 @@ TIMESTAMP fuse::postsync(TIMESTAMP t0)
 			if (phase_A_state == GOOD)	//Only bother if we are in service
 			{
 				Ret_Val[0] = TS_NEVER;		//We're still good, so we don't care when we come back
-				goodphases |= 0x04;			//Mark as good
 			}
 			else						//We're blown
 			{
@@ -679,7 +677,6 @@ TIMESTAMP fuse::postsync(TIMESTAMP t0)
 			if (phase_B_state == GOOD)	//Only bother if we are in service
 			{
 				Ret_Val[1] = TS_NEVER;		//We're still good, so we don't care when we come back
-				goodphases |= 0x02;			//Mark as good
 			}
 			else						//We're blown
 			{
@@ -699,7 +696,6 @@ TIMESTAMP fuse::postsync(TIMESTAMP t0)
 			if (phase_C_state == GOOD)	//Only bother if we are in service
 			{
 				Ret_Val[2] = TS_NEVER;		//We're still good, so we don't care when we come back
-				goodphases |= 0x01;			//Mark as good
 			}
 			else						//We're blown
 			{
diff --git a/module/resilience/cost.cpp b/module/resilience/cost.cpp
index cc7855587..36a1519d1 100644
--- a/module/resilience/cost.cpp
+++ b/module/resilience/cost.cpp
@@ -80,7 +80,10 @@ static COSTDATA *add_cost(const char *row)
 	if ( sscanf(row,"%[^,],%d,%lf,%lf",classname,&violations,&fixedcost,&variablecost) == 4 )
 	{
 		COSTDATA *item = new COSTDATA;
-		strncpy(item->classname,classname,sizeof(item->classname));
+		if ( snprintf(item->classname,sizeof(item->classname)-1,"%.*s",(int)(sizeof(item->classname)-2),classname) < (int)strlen(classname) )
+		{
+			gl_warning("add_cost(row='%s'): class name '%s' is too long to store",row,classname);
+		}
 		item->violations = violations;
 		item->fixedcost = fixedcost;
 		item->variablecost = variablecost;
diff --git a/module/resilience/metrics.cpp b/module/resilience/metrics.cpp
index b622ded1b..ee2be9d13 100644
--- a/module/resilience/metrics.cpp
+++ b/module/resilience/metrics.cpp
@@ -131,19 +131,19 @@ int metrics::finalize(void)
 
 void metrics::report_impact(int n)
 {
-	gld_wlock(my());
+	gld_wlock lock(my());
 	impact += n;
 }
 
 void metrics::report_cost(double x)
 {
-	gld_wlock(my());
+	gld_wlock lock(my());
 	cost += x;
 }
 
 void metrics::report_outage(double t)
 {
-	gld_wlock(my());
+	gld_wlock lock(my());
 	outage += t;
 }
 
diff --git a/module/tape/group_recorder.cpp b/module/tape/group_recorder.cpp
index 4778bf5cc..5d52c7b62 100644
--- a/module/tape/group_recorder.cpp
+++ b/module/tape/group_recorder.cpp
@@ -21,7 +21,7 @@ group_recorder::group_recorder(MODULE *mod){
             GL_THROW("unable to register object class implemented by %s",__FILE__);
         
         if(gl_publish_variable(oclass,
-			PT_char256, "file", PADDR(filename), PT_DESCRIPTION, "output file name",
+			PT_char1024, "file", PADDR(filename), PT_DESCRIPTION, "output file name",
 			PT_char1024, "group", PADDR(group_def), PT_DESCRIPTION, "group definition string",
 			PT_double, "interval[s]", PADDR(dInterval), PT_DESCRIPTION, "recordering interval (0 'every iteration', -1 'on change')",
 			PT_double, "flush_interval[s]", PADDR(dFlush_interval), PT_DESCRIPTION, "file flush interval (0 never, negative on samples)",
@@ -82,7 +82,7 @@ int group_recorder::init(OBJECT *obj){
 			gl_error("group_recorder::init(): no filename defined in strict mode");
 			return 0;
 		} else {
-			snprintf(filename,sizeof(filename)-1, "%256s-%256i.csv", oclass->name, obj->id);
+			snprintf(filename,sizeof(filename)-1, "%256s-%16i.csv", oclass->name, obj->id);
 			gl_warning("group_recorder::init(): no filename defined, auto-generating '%s'", filename.get_string());
 			/* TROUBLESHOOT
 				group_recorder requires a filename.  If none is provided, a filename will be generated
diff --git a/module/tape/group_recorder.h b/module/tape/group_recorder.h
index 1010879dc..a9155347c 100644
--- a/module/tape/group_recorder.h
+++ b/module/tape/group_recorder.h
@@ -39,7 +39,7 @@ class group_recorder{
 	double dFlush_interval;
 	char256 property_name;
 	int32 limit;
-	char256 filename;
+	char1024 filename;
 	bool strict;
 	bool print_units;
     bool format;
diff --git a/module/tape/metrics_collector_writer.cpp b/module/tape/metrics_collector_writer.cpp
index f5bad2f44..66388f336 100644
--- a/module/tape/metrics_collector_writer.cpp
+++ b/module/tape/metrics_collector_writer.cpp
@@ -21,7 +21,7 @@ metrics_collector_writer::metrics_collector_writer(MODULE *mod){
 			throw "unable to register class metrics_collector_writer";
 
 		if(gl_publish_variable(oclass,
-			PT_char256,"filename",PADDR(filename),PT_DESCRIPTION,"the JSON formatted output file name",
+			PT_char1024,"filename",PADDR(filename),PT_DESCRIPTION,"the JSON formatted output file name",
 			PT_double, "interval[s]", PADDR(interval_length_dbl), PT_DESCRIPTION, "Interval at which the metrics_collector_writer output is stored in JSON format",
 			NULL) < 1) GL_THROW("unable to publish properties in %s",__FILE__);
     }
@@ -46,7 +46,7 @@ int metrics_collector_writer::init(OBJECT *parent)
 	// check for filename
 	if(0 == filename[0]){
 		// if no filename, auto-generate based on ID
-		snprintf(filename,sizeof(filename)-1, "%256s-%256i-metrics_collector_output.json", oclass->name, obj->id);
+		snprintf(filename,sizeof(filename)-1, "%256s-%16i-metrics_collector_output.json", oclass->name, obj->id);
 		gl_warning("metrics_collector_writer::init(): no filename defined, auto-generating '%s'", filename.get_string());
 		/* TROUBLESHOOT
 			group_recorder requires a filename.  If none is provided, a filename will be generated
@@ -55,12 +55,12 @@ int metrics_collector_writer::init(OBJECT *parent)
 	}
 
 	// Write seperate json files for meters, triplex_meters, inverters, capacitors, regulators, houses, substation_meter:
-	snprintf(filename_billing_meter,sizeof(filename_billing_meter)-1,"billing_meter_%s",(const char*)filename);
-	snprintf(filename_inverter,sizeof(filename_inverter)-1,"inverter_%s",(const char*)filename);
-	snprintf(filename_capacitor,sizeof(filename_capacitor)-1,"capacitor_%s",(const char*)filename);
-	snprintf(filename_regulator,sizeof(filename_regulator)-1,"regulator_%s",(const char*)filename);
-	snprintf(filename_house,sizeof(filename_house)-1,"house_%s",(const char*)filename);
-	snprintf(filename_substation,sizeof(filename_substation)-1,"substation_%s",(const char*)filename);
+	snprintf(filename_billing_meter,sizeof(filename_billing_meter)-1,"billing_meter_%.1000s",(const char*)filename);
+	snprintf(filename_inverter,sizeof(filename_inverter)-1,"inverter_%.1000s",(const char*)filename);
+	snprintf(filename_capacitor,sizeof(filename_capacitor)-1,"capacitor_%.1000s",(const char*)filename);
+	snprintf(filename_regulator,sizeof(filename_regulator)-1,"regulator_%.1000s",(const char*)filename);
+	snprintf(filename_house,sizeof(filename_house)-1,"house_%.1000s",(const char*)filename);
+	snprintf(filename_substation,sizeof(filename_substation)-1,"substation_%.1000s",(const char*)filename);
 
 	// Check valid metrics_collector output interval
 	interval_length = (int64)(interval_length_dbl);
diff --git a/module/tape/metrics_collector_writer.h b/module/tape/metrics_collector_writer.h
index 6c29284d2..56e726eda 100644
--- a/module/tape/metrics_collector_writer.h
+++ b/module/tape/metrics_collector_writer.h
@@ -36,7 +36,7 @@ class metrics_collector_writer{
 	int commit(TIMESTAMP);
 
 public:
-	char256 filename;
+	char1024 filename;
 	double interval_length_dbl;			//Metrics output interval length
 
 private:
diff --git a/module/tape/multi_recorder.cpp b/module/tape/multi_recorder.cpp
index 5f643e8a9..4a6b9dc9e 100644
--- a/module/tape/multi_recorder.cpp
+++ b/module/tape/multi_recorder.cpp
@@ -143,7 +143,10 @@ static int multi_recorder_open(OBJECT *obj)
 			gl_error("multirecorder: transient recorders cannot use multi-run output files");
 			return 0;
 		}
-		snprintf(my->multitempfile,sizeof(my->multitempfile), "temp_%s", (char*)(my->file));
+		if ( snprintf(my->multitempfile,sizeof(my->multitempfile)-1, "temp_%.*s", (int)(sizeof(my->multitempfile)-8),(const char*)(my->file)) < (int)strlen((const char*)my->file) )
+		{
+			gl_warning("multirecorder: filename '%s' truncated due to buffer overrun",(const char*)(my->file));
+		}
 		my->multifp = fopen(my->multitempfile, "w");
 		if(my->multifp == NULL){
 			gl_error("multirecorder: unable to open \'%s\' for multi-run output", (char*)(my->multitempfile));
diff --git a/module/tape/recorder.cpp b/module/tape/recorder.cpp
index 328eeab9e..074cece4b 100644
--- a/module/tape/recorder.cpp
+++ b/module/tape/recorder.cpp
@@ -136,7 +136,10 @@ static int recorder_open(OBJECT *obj)
 			gl_error("transient recorders cannot use multi-run output files");
 			return 0;
 		}
-		snprintf(my->multitempfile,sizeof(my->multitempfile)-1, "temp_%s", (char*)my->file);
+		if ( snprintf(my->multitempfile,sizeof(my->multitempfile)-1, "temp_%.*s", (int)(sizeof(my->multitempfile)-8),(const char*)(my->file)) < (int)strlen((const char*)my->file) )
+		{
+			gl_warning("recorder: filename '%s' truncated due to buffer overrun",(const char*)(my->file));
+		}
 		my->multifp = fopen(my->multitempfile, "w");
 		if(my->multifp == NULL){
 			gl_error("unable to open \'%s\' for multi-run output", (char*)my->multitempfile);
diff --git a/module/tape_plot/tape_plot.cpp b/module/tape_plot/tape_plot.cpp
index 31239cc1d..604c9ae20 100644
--- a/module/tape_plot/tape_plot.cpp
+++ b/module/tape_plot/tape_plot.cpp
@@ -490,7 +490,7 @@ EXPORT void close_recorder(struct recorder *my)
 	const char *plotcmd = "gnuplot";
 #endif
 	if(my->output == SCR)
-		sprintf(gnuplot,"%s -persist", plotcmd);
+		snprintf(gnuplot,sizeof(gnuplot)-1,"%s -persist", plotcmd);
 	else
 		strcpy(gnuplot,plotcmd);
 	char fname[sizeof(char32)];
@@ -677,7 +677,7 @@ EXPORT void close_collector(struct collector *my)
 		fprintf(my->fp,"# end of tape\n");
 		fclose(my->fp);
 		sscanf(my->file,"%32[^:]:%32[^:]",type,fname);
-		sprintf(command,"%s %s", gnuplot, fname);
+		snprintf(command,sizeof(command)-1,"%s %s", gnuplot, fname);
 		system( command );
 	}
  	my->fp = NULL;
diff --git a/python/Makefile.mk b/python/Makefile.mk
index ca0bd892e..631371a09 100644
--- a/python/Makefile.mk
+++ b/python/Makefile.mk
@@ -1,18 +1,29 @@
-PYTHONVERSION=$(shell $(bindir)/pkgenv/bin/python3 $(top_srcdir)/python/setup.py --version)
+PYTHONVERSION=$(shell python3 $(top_srcdir)/python/setup.py --version)
+PYPKG=$(PYENV)/lib/python$(PYVER)/site-packages/gridlabd
 
-$(top_srcdir)/python/dist/gridlabd-$(PYTHONVERSION).tar.gz: $(top_srcdir)/source/build.h
+$(top_srcdir)/python/dist/gridlabd-$(PYTHONVERSION).tar.gz: $(top_srcdir)/source/build.h | $(PYENV)
+	@echo "building gridlabd-$(PYTHONVERSION)..."
+	@rm -f $(PYPKG)-$(PYTHONVERSION)*.{whl,tar.gz}
+	@$(ENVPYTHON) -m pip install build 
+	@export SRCDIR=$(realpath $(top_srcdir)) ; export BLDDIR=$(shell pwd); $(ENVPYTHON) -m build $(top_srcdir)/python
 
-	@echo "building $@"
-	@rm -f $(top_srcdir)/python/dist/gridlabd-*.{whl,tar.gz}
-	@$(bindir)/pkgenv/bin/python3 -m pip install build 1>/dev/null
-	@( export SRCDIR=$(realpath $(top_srcdir)) ; export BLDDIR=$(shell pwd); $(bindir)/pkgenv/bin/python3 -m build $(top_srcdir)/python 1>/dev/null )
+$(PYPKG)-$(PYTHONVERSION).tar.gz: $(top_srcdir)/python/dist/gridlabd-$(PYTHONVERSION).tar.gz
+	@echo "copying $(top_srcdir)/python/dist to $(PYPKG)-$(PYTHONVERSION)..."
+	@cp $(top_srcdir)/python/dist/gridlabd-$(PYTHONVERSION)*.{tar.gz,whl} $(PYENV)/lib/python$(PYVER)/site-packages
 
-python-install: $(top_srcdir)/python/dist/gridlabd-$(PYTHONVERSION).tar.gz
+python-install: $(PYPKG)-$(PYTHONVERSION).dist-info
 
-	@echo "installing $@"
-	@$(bindir)/pkgenv/bin/python3 -m pip install --ignore-installed $(top_srcdir)/python/dist/gridlabd-*.whl
+$(PYPKG)-$(PYTHONVERSION).dist-info: $(PYPKG)-$(PYTHONVERSION).tar.gz
+	@echo "installing gridlabd-$(PYTHONVERSION)..."
+	$(ENVPYTHON) -m pip install --ignore-installed $(PYPKG)-$(PYTHONVERSION)-*.whl
+	touch $@
 
 python-clean:
-	@rm -f $(top_srcdir)/python/dist/*.{whl,tar.gz}
-	@echo "uninstalling $(top_srcdir)/python"
-	@$(bindir)/pkgenv/bin/python3 -m pip uninstall gridlabd -y || (echo "Use '. utilities/cleanwc' instead to clean this build."; exit 1)
+	@echo "removing $(top_srcdir)/python/dist..."
+	@rm -rf $(top_srcdir)/python/dist
+
+python-uninstall:
+	@echo "removing $(PYPKG)..."
+	@rm -rf $(PYPKG)*
+
+BUILT_SOURCES += python-install
diff --git a/python/README.md b/python/README.md
index ccf588a2f..15bd3cc7e 100644
--- a/python/README.md
+++ b/python/README.md
@@ -1 +1,20 @@
-See https://docs.gridlabd.us/.
\ No newline at end of file
+# Python Requirements
+
+The `requirements.csv` file provides platform specific information about python modules required to build and run GridLAB-D.  
+
+## Sysinfo
+
+You can determine which platform the python build system is running on by using the command `python3 python/requirements.py --sysinfo`.
+
+## Default
+
+The `default` column specified the module version required if none is specified for the current platform.
+
+## Priority
+
+The `priority` column indicates which modules are required to build `gridlabd` and the order in which they must be installed by `pip`.  When `priority` is specified, the `options` column is used to provide command-line options to `pip`, if necessary.
+
+# Documentation
+
+See [Python Module Documentation](https://docs.gridlabd.us/index.html?owner=slacgismo&project=gridlabd&branch=master&folder=/Module&doc=/Module/Python.md) for details.
+
diff --git a/python/python.cpp b/python/python.cpp
index 96d0c5382..41272cc77 100644
--- a/python/python.cpp
+++ b/python/python.cpp
@@ -408,7 +408,7 @@ PyMODINIT_FUNC PyInit_gridlabd(void)
     }
     Py_INCREF(proptype);
     char version[1024];
-    sprintf(version,"%d.%d.%d-%d",global_version_major,global_version_minor,global_version_patch,global_version_build);
+    snprintf(version,sizeof(version)-1,"%d.%d.%d-%d",global_version_major,global_version_minor,global_version_patch,global_version_build);
     PyModule_AddObject(this_module,"__version__",Py_BuildValue("s",version));
 
     //PyModule_AddObject(this_module,"GldObject",gridlabd_class_create(&this_module));
@@ -1366,7 +1366,7 @@ static PyObject *gridlabd_get_object(PyObject *self, PyObject *args)
     else
     {
         char buffer[1024];
-        sprintf(buffer,"%s:%d",obj->oclass->name,obj->id);
+        snprintf(buffer,sizeof(buffer)-1,"%s:%d",obj->oclass->name,obj->id);
         PyDict_SetItemString(data,"name",buffer);
     }
     if ( obj->oclass->name != NULL )
@@ -2160,7 +2160,7 @@ int python_event(OBJECT *obj, const char *function, long long *p_retval)
     if ( obj->name )
         strcpy(objname,obj->name);
     else
-        sprintf(objname,"%s:%d",obj->oclass->name, obj->id);
+        snprintf(objname,sizeof(objname)-1,"%s:%d",obj->oclass->name, obj->id);
 
     char modname[1024], method[1024];
     if ( sscanf(function,"%[^.].%[^\n]",modname,method) < 2 )
@@ -2201,7 +2201,7 @@ int python_event(OBJECT *obj, const char *function, long long *p_retval)
             char name[1024];
             if ( obj->name == NULL )
             {
-                sprintf(name,"%s:%d", obj->oclass->name, obj->id);
+                snprintf(name,sizeof(name)-1,"%s:%d", obj->oclass->name, obj->id);
             }
             PyObject *args = Py_BuildValue("(sK)",obj->name?obj->name:name,global_clock);
             PyObject *result = PyObject_Call(call,args,NULL);
diff --git a/python/requirements.csv b/python/requirements.csv
new file mode 100644
index 000000000..0b4680c31
--- /dev/null
+++ b/python/requirements.csv
@@ -0,0 +1,50 @@
+module,priority,options,default
+address,,,0.1.1
+boto3,2,,1.26.115
+boto3,,,1.26.115
+build,,,0.9.0
+CensusData,,,1.15
+cfo,,,1.0.1
+control,,,0.9.2
+docker,,,4.4.4
+elevation,,,1.1.2
+Fiona,,,1.8.22
+folium,,,0.12.1
+geocoder,,,1.38.1
+geopandas,,,0.12.2
+geopy,,,2.1.0
+github,,,
+haversine,,,2.3.0
+ipinfo,,,4.2.1
+ipykernel,,,5.5.5
+ipyplot,,,1.1.1
+ipython,3,,8.10.0
+ipython,,,8.10.0
+matplotlib,2,,3.3.3
+matplotlib_inline,,,0.1.6
+metar,,,1.9.0
+networkx,,,2.8.8
+numpy,2,,1.23.3
+numpy,,,1.23.3
+openpyxl,,,3.0.7
+pandas,,,2.0.0
+pandas_access,,,0.0.1
+Pillow,2,,9.3.0
+Pillow,,,9.3.0
+PyGithub,2,,1.54.1
+pymysql,,,1.0.2
+pyproj,,,3.4.0
+pysolar,,,0.9
+pytz,2,,
+pytz,,,
+rasterio,,,1.3.6
+scikit-learn,2,,1.1.1
+scipy,,,1.9.1
+setuptools,1,--upgrade --no-cache-dir,57.5.0
+Shapely,,,1.8.4
+simplekml,,,1.3.6
+timezonefinder,,,5.2.0
+xlrd,2,,2.0.1
+xlrd,,,2.0.1
+wheel,3,,0.40.0
+
diff --git a/python/requirements.py b/python/requirements.py
new file mode 100644
index 000000000..888fe924b
--- /dev/null
+++ b/python/requirements.py
@@ -0,0 +1,97 @@
+"""Generate requirements.txt for this OS/CPU combination
+
+Syntax
+------
+
+    $ python3 python/requirements.py [OPTION] 
+    
+Options
+-------
+
+The following options are available. Only one option may be used in any single command line
+
+    --sysinfo       list the name of the current platform used to lookup versions
+    
+    --buildenv      create python calls to install module needed to build gridlabd
+    
+    FILENAME        create requirements.txt file needed to run gridlabd
+    
+Description
+-----------
+
+This script converts requirements.csv to requirements.txt by choosing the entries
+that correspond to the current system information.
+
+See Also
+--------
+
+* https://github.com/dchassin/gridlabd/blob/master/python/README.md
+"""
+
+import sys, os
+import platform
+import pandas
+
+pandas.options.display.max_columns = None
+pandas.options.display.max_colwidth = None
+pandas.options.display.max_rows = None
+
+if platform.system() == "Linux":
+    osrelease = pandas.read_csv("/etc/os-release",delimiter="=",header=None,index_col=0).to_dict(orient='index')
+    sysinfo = f"{osrelease['ID'][1]}-{osrelease['VERSION_ID'][1]}-{platform.machine()}"
+else:
+    sysinfo = "-".join([platform.system(),platform.release().split('.')[0],platform.machine()])
+csvfile = sys.argv[0].replace(".py",".csv")
+
+PRIORITY = False
+
+if len(sys.argv) == 2:
+    if sys.argv[1] == "--sysinfo":
+        print(sysinfo)
+        exit(0)
+    elif sys.argv[1] == "--buildenv":
+        PRIORITY = True
+    else:
+        csvfile = sys.argv[1]
+
+requirements = pandas.DataFrame(pandas.read_csv(csvfile,index_col=['module'],dtype='str',na_values=[],keep_default_na=False))
+
+if PRIORITY:
+    priority = requirements[requirements['priority']!=''].reset_index().set_index(['priority','module']).sort_index()
+    if not sysinfo in priority.columns:
+        print(f"WARNING: sysinfo='{sysinfo}' not found in requirements specifications, using defaults",file=sys.stderr)
+        sysinfo = 'default'
+
+    buildenv = {}
+    for n,row in priority.reset_index().iterrows():
+        m = row['priority']
+        if not m in buildenv:
+            buildenv[m] = {}
+        if not row.options in buildenv[m]:
+            buildenv[m][row.options] = []
+        if row[sysinfo] == '':
+            buildenv[m][row.options].append(row.module)
+        else:
+            buildenv[m][row.options].append(f"{row.module}=={row[sysinfo]}")
+    for n,specs in buildenv.items():
+        for options,requirements in specs.items():
+            print(f"{os.environ['_']} -m pip install {options} {' '.join(requirements)}")
+
+else:
+    requirements = requirements[requirements['priority']=='']
+    requirements.drop('priority',axis=1,inplace=True)
+    requirements.drop('options',axis=1,inplace=True)
+    requirements = requirements.stack().reset_index()
+    requirements.columns = ["module","sysinfo","version"]
+    requirements.set_index(["module","sysinfo"],inplace=True,verify_integrity=True)
+    requirements.sort_index(inplace=True)
+    requirements = requirements[requirements['version']!='']
+    # print(requirements,file=sys.stderr)
+
+    for module in requirements.index.get_level_values(0).unique():
+        info = requirements.loc[module]
+        try:
+            version = info.loc[sysinfo]['version']
+        except:
+            version = info.loc['default']['version']            
+        print(f"{module}{'==' if version!='' else ''}{version}")
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index b93f05313..000000000
--- a/requirements.txt
+++ /dev/null
@@ -1,36 +0,0 @@
-matplotlib==3.3.3
-numpy==1.23.3
-pytz==2020.4
-PyGithub==1.54.1
-docker==4.4.4
-folium==0.12.1
-scikit-learn==1.1.1
-xlrd==2.0.1
-openpyxl>=3.0.7
-scipy==1.9.1
-pandas_access>=0.0.1
-pandas==1.4.3
-pysolar==0.9
-pymysql==1.0.2
-simplekml==1.3.6
-Pillow==9.3.0
-haversine==2.3.0
-Fiona==1.8.22
-Shapely==1.8.4
-geopandas>=0.9.0
-CensusData==1.13
-cfo==1.0.1
-ipykernel==5.5.5
-geopy>=2.1.0
-timezonefinder==5.2.0
-geocoder>=1.38.1
-metar>=1.8.0
-boto3>=1.19.11
-control>=0.9.0
-rasterio>=1.2.10
-matplotlib_inline>=0.1.2
-ipython==8.10.0
-ipyplot==1.1.1
-elevation==1.1.2
-build
-pyproj
diff --git a/runtime/gridlabd.h b/runtime/gridlabd.h
index fda1155fe..301cccd1b 100644
--- a/runtime/gridlabd.h
+++ b/runtime/gridlabd.h
@@ -546,7 +546,7 @@ typedef struct s_globalvar {
 	PROPERTY *prop;
 	struct s_globalvar *next;
 	uint32 flags;
-	void (*callback)(char*);
+	void (*callback)(const char*,const char*);
 	LOCKVAR lock;
 } GLOBALVAR;
 
diff --git a/source/aggregate.cpp b/source/aggregate.cpp
index a553d4233..1019e30f8 100644
--- a/source/aggregate.cpp
+++ b/source/aggregate.cpp
@@ -49,7 +49,14 @@ DEPRECATED CDECL AGGREGATION *aggregate_mkgroup(const char *aggregator, /**< agg
 }
 DEPRECATED CDECL double aggregate_value(AGGREGATION *aggr) /**< the aggregation to perform */
 {
-	return GldAggregator(aggr).get_value();
+	try
+	{
+		return GldAggregator(aggr).get_value();
+	}
+	catch (...)
+	{
+		return QNAN;
+	}
 }
 
 /** This constructor creates an instance of an existing aggregator.
@@ -102,7 +109,7 @@ GldAggregator::GldAggregator(const char *aggregator, /**< aggregator (min,max,av
 			Check the aggregation's syntax and make sure it conforms to the required syntax.
 		 */
 		errno = EINVAL;
-		throw NULL;
+		throw "invalid aggregation";
 	}
 
 	//Change made for collector to handle propeties of objects
@@ -140,7 +147,7 @@ GldAggregator::GldAggregator(const char *aggregator, /**< aggregator (min,max,av
 				Check your aggregations and make sure all the units are defined.
 			 */
 			errno = EINVAL;
-			throw NULL;
+			throw "invalid aggregation";
 		}
 		strcpy(aggrval, aggrprop); // write property back into value, sans unit
 	}
@@ -166,7 +173,7 @@ GldAggregator::GldAggregator(const char *aggregator, /**< aggregator (min,max,av
 			Check that all your aggregators used allowed functions (e.g., min, max, avg, std, sum, count, etc.).
 		 */
 		errno = EINVAL;
-		throw NULL;
+		throw "invalid aggregation";
 	}
 	if (op!=AGGR_NOP)
 	{		
@@ -180,7 +187,7 @@ GldAggregator::GldAggregator(const char *aggregator, /**< aggregator (min,max,av
 				Check that all your groups are correctly defined.
 			 */
 			errno = EINVAL;
-			throw NULL;
+			throw "invalid aggregation";
 		}
 		else
 		{
@@ -198,7 +205,7 @@ GldAggregator::GldAggregator(const char *aggregator, /**< aggregator (min,max,av
 				errno = EINVAL;
 				find_pgm_delete(pgm);
 				pgm = NULL;
-				throw NULL;
+				throw "invalid aggregation";
 			}
 			else
 			{				
@@ -212,7 +219,7 @@ GldAggregator::GldAggregator(const char *aggregator, /**< aggregator (min,max,av
 					find_pgm_delete(pgm);
 					pgm = NULL;
 					errno=EINVAL;
-					throw NULL;
+					throw "invalid aggregation";
 				}
 				
 				if (obj==NULL)
@@ -227,7 +234,7 @@ GldAggregator::GldAggregator(const char *aggregator, /**< aggregator (min,max,av
 					free(list);
 					list = NULL;
 					errno=EINVAL;
-					throw NULL;
+					throw "invalid aggregation";
 				}
 				pinfo = class_find_property(obj->oclass,aggrval);
 				if (pinfo==NULL)
@@ -242,7 +249,7 @@ GldAggregator::GldAggregator(const char *aggregator, /**< aggregator (min,max,av
 					pgm = NULL;
 					free(list);
 					list = NULL;
-					throw NULL;
+					throw "invalid aggregation";
 				}
 				else if (pinfo->ptype==PT_double || pinfo->ptype==PT_random || pinfo->ptype==PT_loadshape )
 				{
@@ -258,7 +265,7 @@ GldAggregator::GldAggregator(const char *aggregator, /**< aggregator (min,max,av
 						pgm = NULL;
 						free(list);
 						list = NULL;
-						throw NULL;
+						throw "invalid aggregation";
 					}
 					part = AP_NONE;
 				}
@@ -286,7 +293,7 @@ GldAggregator::GldAggregator(const char *aggregator, /**< aggregator (min,max,av
 						pgm = NULL;
 						free(list);
 						list = NULL;
-						throw NULL;
+						throw "invalid aggregation";
 					}
 				}
 				else
@@ -301,7 +308,7 @@ GldAggregator::GldAggregator(const char *aggregator, /**< aggregator (min,max,av
 					pgm = NULL;
 					free(list);
 					list = NULL;
-					throw NULL;
+					throw "invalid aggregation";
 				}
 				from_unit = pinfo->unit;
 				if(to_unit != NULL && from_unit == NULL){
@@ -315,7 +322,7 @@ GldAggregator::GldAggregator(const char *aggregator, /**< aggregator (min,max,av
 					pgm = NULL;
 					free(list);
 					list = NULL;
-					throw NULL;
+					throw "invalid aggregation";
 				}
 				if (from_unit != NULL && to_unit != NULL && unit_convert_ex(from_unit, to_unit, &scale) == 0){
 					output_error("aggregate group property '%s' cannot use units '%s'", aggrval, aggrunit);
@@ -329,7 +336,7 @@ GldAggregator::GldAggregator(const char *aggregator, /**< aggregator (min,max,av
 					pgm = NULL;
 					free(list);
 					list = NULL;
-					throw NULL;
+					throw "invalid aggregation";
 				}
 			}
 		}
@@ -355,7 +362,7 @@ GldAggregator::GldAggregator(const char *aggregator, /**< aggregator (min,max,av
 			pgm = NULL;
 			free(list);
 			list = NULL;
-			throw NULL;
+			throw "invalid aggregation";
 		}
 	}
 
diff --git a/source/cmdarg.cpp b/source/cmdarg.cpp
index ba6884273..8fb4192f5 100644
--- a/source/cmdarg.cpp
+++ b/source/cmdarg.cpp
@@ -256,8 +256,8 @@ STATUS GldCmdarg::no_cmdargs(void)
 	}
 	else if ( find_file(guiname,NULL,R_OK,guipath,sizeof(guipath)) )
 	{
-		char command[2048];
-		snprintf(command,sizeof(command)-1,"%s/python3 %s &",global_bindir,guipath);
+		char command[3000];
+		snprintf(command,sizeof(command)-1,"%s %s &",(const char*)global_pythonexec,guipath);
 		system(command);
 		return SUCCESS;
 	}
diff --git a/source/daemon.cpp b/source/daemon.cpp
index 3424a56de..aa21dd186 100644
--- a/source/daemon.cpp
+++ b/source/daemon.cpp
@@ -73,7 +73,7 @@ static void daemon_log(const char *format, ...)
 	}
 	va_list ptr;
 	va_start(ptr,format);
-	vsprintf(buffer,format,ptr); /* note the lack of check on buffer overrun */
+	vsnprintf(buffer,sizeof(buffer)-1,format,ptr); /* note the lack of check on buffer overrun */
 	va_end(ptr);
 
 	// first-time access to log file
diff --git a/source/deltamode.cpp b/source/deltamode.cpp
index 20930f0ed..44557468e 100644
--- a/source/deltamode.cpp
+++ b/source/deltamode.cpp
@@ -16,7 +16,7 @@ static int delta_objectcount = 0; /* qualified object count */
 static MODULE **delta_modulelist = NULL; /* qualified module list */
 static int delta_modulecount = 0; /* qualified module count */
 
-void delta_modecheck(const char*)
+void delta_modecheck(const char*,const char*)
 {
 	if ( global_deltamode_allowed == TRUE )
 	{
diff --git a/source/deltamode.h b/source/deltamode.h
index db00e7ff8..3aab40215 100644
--- a/source/deltamode.h
+++ b/source/deltamode.h
@@ -136,7 +136,7 @@ DEPRECATED DELTAPROFILE *delta_getprofile(void);
     Throw:
     - If delta-mode is attempted when it is disallowed
  */
-DEPRECATED void delta_modecheck(const char *);
+DEPRECATED void delta_modecheck(const char *,const char *);
 
 #ifdef __cplusplus
 }
diff --git a/source/enduse.cpp b/source/enduse.cpp
index 92b3f888a..9f3a4e426 100644
--- a/source/enduse.cpp
+++ b/source/enduse.cpp
@@ -454,10 +454,10 @@ int initial_from_enduse(char *string,int size,void *data, PROPERTY *prop)
 */
 	enduse *e = (enduse*)data;
 	int len = 0;
-#define OUTPUT_NZ(X) if (e->X!=0) len+=sprintf(string+len,"%s" #X ": %f", len>0?"; ":"", e->X)
-#define OUTPUT(X) len+=sprintf(string+len,"%s"#X": %g", len>0?"; ":"", e->X);
-#define OUTPUT_NZ_X(X,N) if (e->X!=0) len+=sprintf(string+len,"%s%s: %f", len>0?"; ":"", N, e->X)
-#define OUTPUT_X(X,N) len+=sprintf(string+len,"%s%s: %g", len>0?"; ":"", N, e->X);
+#define OUTPUT_NZ(X) if (e->X!=0) len+=snprintf(string+len,size-len-1,"%s" #X ": %f", len>0?"; ":"", e->X)
+#define OUTPUT(X) len+=snprintf(string+len,size-len-1,"%s"#X": %g", len>0?"; ":"", e->X);
+#define OUTPUT_NZ_X(X,N) if (e->X!=0) len+=snprintf(string+len,size-len-1,"%s%s: %f", len>0?"; ":"", N, e->X)
+#define OUTPUT_X(X,N) len+=snprintf(string+len,size-len-1,"%s%s: %g", len>0?"; ":"", N, e->X);
 	OUTPUT_NZ(impedance_fraction);
 	OUTPUT_NZ(current_fraction);
 	OUTPUT_NZ(power_fraction);
@@ -523,7 +523,7 @@ int enduse_publish(CLASS *oclass, PROPERTYADDR struct_address, const char *prefi
 			//strcpy(name,prefix);
 			//strcat(name, ".");
 			//strcat(name, p->name);
-			sprintf(name,"%s.%s",prefix,p->name);
+			snprintf(name,sizeof(name)-1,"%s.%s",prefix,p->name);
 		}
 
 		if (p->type<_PT_LAST)
diff --git a/source/exception.cpp b/source/exception.cpp
index 323f5f253..da1c7ec98 100644
--- a/source/exception.cpp
+++ b/source/exception.cpp
@@ -106,7 +106,7 @@ void throw_exception(const char *format, /**< the format string */
 	static char buffer[1024]="";
 	va_list ptr;
 	va_start(ptr,format);
-	vsprintf(buffer,format,ptr);
+	vsnprintf(buffer,sizeof(buffer)-1,format,ptr);
 	va_end(ptr);
 
 	if (handlers)
diff --git a/source/exec.cpp b/source/exec.cpp
index 6644305c2..5c7267eea 100644
--- a/source/exec.cpp
+++ b/source/exec.cpp
@@ -554,18 +554,17 @@ int64 GldExec::clock(void)
 		return 0;
 	}
 	
-	static struct timeb t0;
-	struct timeb t1 = {0,0,0,0};
-	if ( t0.time == 0 )
+	static struct timeval t0 = {0,0};
+	struct timeval t1 = {0,0};
+	if ( t0.tv_sec == 0 )
 	{
-		ftime(&t0);
-		t1 = t0;
+		gettimeofday(&t0,NULL);
 	}
 	else
 	{
-		ftime(&t1);
+		gettimeofday(&t1,NULL);
 	}
-	return (t1.time-t0.time)*CLOCKS_PER_SEC + (t1.millitm-t0.millitm)*CLOCKS_PER_SEC/1000;
+	return (t1.tv_sec-t0.tv_sec)*CLOCKS_PER_SEC + (t1.tv_usec-t0.tv_usec)*CLOCKS_PER_SEC/1000000;
 }
 
 /** The main system initialization sequence
diff --git a/source/find.cpp b/source/find.cpp
index 0135f9ee0..5746f6aa7 100644
--- a/source/find.cpp
+++ b/source/find.cpp
@@ -1233,7 +1233,7 @@ const char *find_file(const char *name, /**< the name of the file to find */
 				int len) /**< the len of the buffer */
 {
 	char filepath[1024];
-	char tempfp[1024];
+	char tempfp[2048];
 	char envbuf[1024];
 	const char *glpath;
 	char *dir;
@@ -1332,10 +1332,13 @@ const char *find_file(const char *name, /**< the name of the file to find */
 		strncpy(buffer,tempfp,len);
 		return buffer;
 	}
-	snprintf(tempfp, sizeof(tempfp), "%s/gridlabd/%s", global_datadir, name);
+	int size = snprintf(tempfp, sizeof(tempfp), "%s/gridlabd/%s", global_datadir, name);
 	if ( access(tempfp, mode) == 0 )
 	{
-		strncpy(buffer,tempfp,len);
+		if ( snprintf(buffer,len-1,"%.*s",len-1,tempfp) < size )
+		{
+			output_warning("find_file(name='%s',path='%s',mode=%d,...): long result was truncated to fit in return buffer",name,path,mode);
+		}
 		return buffer;
 	}
 #endif
diff --git a/source/globals.cpp b/source/globals.cpp
index 5a6a95bd3..364eaa61a 100644
--- a/source/globals.cpp
+++ b/source/globals.cpp
@@ -208,85 +208,120 @@ DEPRECATED static KEYWORD pof_keys[] = {
 
 /* Add global directory variable initializations here(The definitions are in globals.h). Top-level variables should be immutable, and all path dependencies should be built based on these. */
 /* NOTE: the GLD_* Values correspond to a specific package. The null handling should error if null, which I need to learn how to do.  */
-void datadir_init(const char *)
+void datadir_init(const char *,const char*)
 {
 	const char *etcpath = getenv("GLD_ETC");
-	if ( etcpath == NULL )
+	if ( etcpath != NULL )
 	{
-		etcpath = "/usr/local/opt/gridlabd/current/share/gridlabd";
+		snprintf(global_datadir,sizeof(global_datadir)-1,"%s",etcpath);
 	}
-	snprintf(global_datadir,sizeof(global_datadir)-1,"%s",etcpath);
 }
 
-void bindir_init(const char *)
+void bindir_init(const char *,const char*)
 {
 	const char * binpath = getenv("GLD_BIN");
-	if ( binpath == NULL )
+	if ( binpath != NULL )
 	{
-		binpath = "/usr/local/opt/gridlabd/current/bin";
+		snprintf(global_bindir,sizeof(global_bindir)-1,"%s",binpath);
 	}
-	snprintf(global_bindir,sizeof(global_bindir)-1,"%s",binpath);
 }
 
-void libdir_init(const char *)
+void libdir_init(const char *,const char*)
 {
 	const char * libpath = getenv("GLD_LIB");
-	if ( libpath == NULL )
+	if ( libpath != NULL )
 	{
-		libpath = "/usr/local/opt/gridlabd/current/lib";
+		snprintf(global_libdir,sizeof(global_libdir)-1,"%s",libpath);
 	}
-	snprintf(global_libdir,sizeof(global_libdir)-1,"%s",libpath);
 }
 
-void vardir_init(const char *)
+void vardir_init(const char *,const char*)
 {
 	const char * varpath = getenv("GLD_VAR");
-	if ( varpath == NULL )
+	if ( varpath != NULL )
 	{
-		varpath = "/usr/local/opt/gridlabd/current/var/gridlabd";
+		snprintf(global_vardir,sizeof(global_vardir)-1,"%s",varpath);
 	}
-	snprintf(global_vardir,sizeof(global_vardir)-1,"%s",varpath);
 }
 
-void incdir_init(const char *)
+void incdir_init(const char *,const char*)
 {
 	const char * incpath = getenv("GLD_INC");
-	if ( incpath == NULL )
+	if ( incpath != NULL )
 	{
-		incpath = "/usr/local/opt/gridlabd/current/include";
+		snprintf(global_incdir,sizeof(global_incdir)-1,"%s",incpath);
 	}
-	snprintf(global_incdir,sizeof(global_incdir)-1,"%s",incpath);
 }
 /* Add more top-level directory variables here. */
 
 /* These directory variable initializations are derived from the top-level. Make sure to define them in globals.h before adding new initializations. */
 
-void logfile_init(const char *value)
+void logfile_init(const char *name,const char *value)
 {
 	extern char logfile[1024];
-	snprintf(logfile,sizeof(logfile)-1,"%s/%s",global_vardir,value);
+	char buffer[2048];
+	snprintf(buffer,sizeof(buffer)-1,"%s/%s",global_vardir,value);
+	if ( strlen(buffer) >= sizeof(logfile) )
+	{
+		output_warning("logfile_init(value='%s'): long value was truncated to fit in logfile global, ",value);
+	}
+	snprintf(logfile,sizeof(logfile)-1,"%.*s",(int)(sizeof(logfile)-2),buffer);
 }
 
-void pidfile_init(const char *value)
+void pidfile_init(const char *name,const char *value)
 {
 	extern char pidfile[1024];
-	snprintf(pidfile,sizeof(pidfile)-1,"%s/%s",global_vardir,value);
+	char buffer[2048];
+	snprintf(buffer,sizeof(buffer)-1,"%s/%s",global_vardir,value);
+	if ( strlen(buffer) >= sizeof(pidfile) )
+	{
+		output_warning("pidfile_init(value='%s'): long value was truncated to fit in pidfile global, ",value);
+	}
+	snprintf(pidfile,sizeof(pidfile)-1,"%.*s",(int)(sizeof(pidfile)-2),buffer);
 }
 
-void workdir_init(const char *value)
+void workdir_init(const char *name,const char *value)
 {
 	extern char workdir[1024];
-	snprintf(workdir,sizeof(workdir)-1,"%s/%s",global_vardir,value);
+	char buffer[2048];
+	snprintf(buffer,sizeof(buffer)-1,"%s/%s",global_vardir,value);
+	if ( strlen(buffer) >= sizeof(workdir) )
+	{
+		output_warning("workdir_init(value='%s'): long value was truncated to fit in workdir global, ",value);
+	}
+	snprintf(workdir,sizeof(workdir)-1,"%.*s",(int)(sizeof(workdir)-2),buffer);
+}
+
+void configpath_init(const char *name,const char *value)
+{
+	const char *etcpath = getenv("GLD_ETC");
+	if ( etcpath != NULL )
+	{
+		snprintf(global_configpath,sizeof(global_configpath)-1,"%.*s/solver_py.conf",(int)(sizeof(global_configpath)-17),etcpath);
+	}
 }
 
-void configpath_init(const char *value)
+void pythonexec_init(const char *name,const char *value)
 {
-	snprintf(global_configpath,sizeof(global_configpath)-1,"%s/solver_py.conf",global_vardir);
+	const char * binpath = getenv("GLD_BIN");
+	if ( binpath != NULL )
+	{
+		snprintf(global_pythonexec,sizeof(global_pythonexec)-1,"%.*s/pkgenv/bin/python3",(int)(sizeof(global_pythonexec)-22),binpath);
+	}
 }
 
-void pythonexec_init(const char *value)
+void pythonpath_init(const char *name,const char *value)
 {
-	snprintf(global_pythonexec,sizeof(global_pythonexec)-1,"%s/pkgenv/bin/python3",global_bindir);
+	const char * pythonpath = getenv("PYTHONPATH");
+	if ( pythonpath != NULL )
+	{
+		int len = snprintf(global_pythonpath,sizeof(global_pythonpath)-1,"%.*s",(int)sizeof(global_pythonpath)-2,value);
+		snprintf(global_pythonpath+len,sizeof(global_pythonpath)-1-len,":%.*s",(int)(sizeof(global_pythonpath)-2),pythonpath);
+	}
+	else
+	{
+		snprintf(global_pythonpath,sizeof(global_pythonpath)-1,"%.*s",(int)sizeof(global_pythonpath)-2,value);
+	}
 }
 /* Add more derivative directories here */
 
@@ -298,7 +333,7 @@ DEPRECATED static struct s_varmap {
 	PROPERTYACCESS access;
 	const char *description;
 	KEYWORD *keys;
-	void (*callback)(const char *name);
+	void (*callback)(const char *name,const char *value);
 } map[] = {
 	/** @todo make this list the authorative list and retire the global_* list (ticket #25) */
 	{"version.major", PT_int32, &global_version_major, PA_REFERENCE, "major version"},
@@ -343,8 +378,8 @@ DEPRECATED static struct s_varmap {
 	{"strictnames", PT_bool, &global_strictnames, PA_PUBLIC, "strict global name enable flag"},
 	{"website", PT_char1024, &global_urlbase, PA_PUBLIC, "url base string (deprecated)"}, /** @todo deprecate use of 'website' */
 	{"urlbase", PT_char1024, &global_urlbase, PA_PUBLIC, "url base string"},
-	{"randomstate", PT_int32, &global_randomstate, PA_PUBLIC, "random number generator state value", NULL,(void(*)(const char*))random_init},
-	{"randomseed", PT_int32, &global_randomseed, PA_PUBLIC, "random number generator seed value", NULL,(void(*)(const char*))random_init},
+	{"randomstate", PT_int32, &global_randomstate, PA_PUBLIC, "random number generator state value", NULL,(void(*)(const char*,const char*))random_init},
+	{"randomseed", PT_int32, &global_randomseed, PA_PUBLIC, "random number generator seed value", NULL,(void(*)(const char*,const char*))random_init},
 	{"include", PT_char1024, &global_include, PA_REFERENCE, "include folder path"},
 	{"trace", PT_char1024, &global_trace, PA_PUBLIC, "trace function list"},
 	{"gdb_window", PT_bool, &global_gdb_window, PA_PUBLIC, "gdb window enable flag"},
@@ -439,7 +474,7 @@ DEPRECATED static struct s_varmap {
 	{"allow_variant_aggregates", PT_bool, &global_allow_variant_aggregates, PA_PUBLIC, "permits aggregates to include time-varying criteria"},
 	{"progress", PT_double, &global_progress, PA_REFERENCE, "computed progress based on clock, start, and stop times"},
 	{"server_keepalive", PT_bool, &global_server_keepalive, PA_PUBLIC, "flag to keep server alive after simulation is complete"},
-	{"pythonpath",PT_char1024,&global_pythonpath,PA_PUBLIC,"folder to append to python module search path"},
+	{"pythonpath",PT_char1024,&global_pythonpath,PA_PUBLIC,"folder to append to python module search path",NULL,pythonpath_init},
 	{"pythonexec",PT_char1024,&global_pythonexec,PA_REFERENCE,"python executable used to build gridlabd",NULL,pythonexec_init},
 	{"datadir",PT_char1024,&global_datadir,PA_REFERENCE,"folder in which share data is stored",NULL,datadir_init},
 	{"bindir",PT_char1024,&global_bindir,PA_REFERENCE,"folder in which share data is stored",NULL,bindir_init},
@@ -896,7 +931,7 @@ STATUS GldGlobals::setvar_v(const char *def, va_list ptr) /**< the definition */
 		}
 		else if ( var->callback )
 		{
-			var->callback(var->prop->name);
+			var->callback(var->prop->name,value);
 		}
 
 		return SUCCESS;
diff --git a/source/globals.h b/source/globals.h
index 39eb4f9c2..43d0c4654 100644
--- a/source/globals.h
+++ b/source/globals.h
@@ -43,7 +43,7 @@ typedef struct s_globalvar
 {
 	PROPERTY *prop;
 	uint32 flags;
-	void (*callback)(const char *);
+	void (*callback)(const char *,const char *);
 	LOCKVAR lock;
 	struct s_globalvar *next;
 } GLOBALVAR;
@@ -845,7 +845,7 @@ GLOBAL char global_pidfile[1024] INIT("/tmp/gridlabd-pid"); /**< Specifies that
 GLOBAL char global_configpath[1024] INIT("/usr/local/opt/gridlabd/current/var/gridlabd");
 
 /* Variable: global_pythonpath */
-GLOBAL char1024 global_pythonpath INIT(".");
+GLOBAL char1024 global_pythonpath INIT(".:/usr/local/opt/gridlabd/current/share/gridlabd:/usr/local/opt/gridlabd/current/bin/pkgenv/lib/python3.10/site-packages");
 
 /* Variable: global_pythonexec */
 GLOBAL char1024 global_pythonexec INIT("/usr/local/opt/gridlabd/current/bin/pkgenv/bin/python3");
@@ -895,7 +895,7 @@ class GldGlobalvar
 	GldGlobalvar(GldMain *instance, const char *name, set *value, KEYWORD *keys, PROPERTYACCESS access = PA_PUBLIC, const char *description = NULL, bool is_deprecated = false);
 	~GldGlobalvar(void);
 public: // accessors
-	inline void set_callback(void (*callback)(const char *)) { if (!spec) throw "GldGlobavar::set_callback(): spec is NULL"; spec->callback = callback;};
+	inline void set_callback(void (*callback)(const char *,const char*)) { if (!spec) throw "GldGlobavar::set_callback(): spec is NULL"; spec->callback = callback;};
 };
 
 class GldGlobals
diff --git a/source/gridlabd.in b/source/gridlabd.in
index 886d75b6b..dd0eb157e 100644
--- a/source/gridlabd.in
+++ b/source/gridlabd.in
@@ -344,10 +344,6 @@ fi
 # Python Configuration Data and Flags
 ###############################################################################
 PY_OS="$(uname -s)"
-PYTHON_VER_DIR="@exec_prefix@/bin/pkgenv/bin"
-
-HAVE_PYTHON="$($PYTHON_VER_DIR/python3 --version | cut -f2 -d' ')"
-PYTHON_VER=$(echo $HAVE_PYTHON | cut -f1-2 -d.)
 
 export GLD_ETC=$pkgdatadir
 export GLD_BIN=$bindir
@@ -357,15 +353,20 @@ export GLD_DOC=$docdir
 export GLD_VAR=$vardir
 export GLD_INC=$exec_prefix/include
 export GLD_SRC=$exec_prefix/src
-export PYCCFLAGS="$($PYTHON_VER_DIR/python3-config --cflags)"
+
+. $bindir/pkgenv/bin/activate
+
+
+export PYCCFLAGS="$(python3-config --cflags)"
 export INCLUDE="-I$GLD_ETC -I$GLD_VER/include -I/usr/include"
 export CFLAGS="${INCLUDE} ${PYCCFLAGS} ${CFLAGS}"
 export CCFLAGS="${INCLUDE} ${PYCCFLAGS} ${CCFLAGS}"
 export CPPFLAGS="${INCLUDE} ${PYCCFLAGS} ${CPPFLAGS}"
 export CXXFLAGS="${INCLUDE} ${PYCCFLAGS} ${CXXFLAGS}"
-export PYLDFLAGS="$($PYTHON_VER_DIR/python3-config --ldflags)"
+export PYLDFLAGS="$(python3-config --ldflags)"
 export LIB="-L$libdir -L/usr/local/lib -L$GLD_VER/lib -L/usr/lib"
 export LDFLAGS="${LIB} ${PYLDFLAGS} ${LDFLAGS}"
+export PYTHON_VER=$(python3 --version | cut -f2 -d' ' | cut -f1-2 -d.)
 export PYTHONPATH=.:${GLD_ETC}:${GLD_BIN}/pkgenv/lib/python${PYTHON_VER}/site-packages${PYTHONPATH:+:}${PYTHONPATH}
 
 if test "x$GLPATH" = x
@@ -401,7 +402,7 @@ fi
 
 if test -f "${GLD_ETC}/$1.py"
 then :
-  export PYTHONPATH=$GLD_ETC; $PYTHON_VER_DIR/python3 -m "$@" ; exit $?
+  export PYTHONPATH=$GLD_ETC; python3 -m "$@" ; exit $?
 fi
 
 if test -x "${bindir}/gridlabd-$1"
diff --git a/source/gridlabd.m4sh b/source/gridlabd.m4sh
index 9f72ca49b..bf58c7872 100644
--- a/source/gridlabd.m4sh
+++ b/source/gridlabd.m4sh
@@ -80,10 +80,6 @@ fi
 # Python Configuration Data and Flags
 ###############################################################################
 PY_OS="$(uname -s)"
-PYTHON_VER_DIR="@exec_prefix@/bin/pkgenv/bin"
-
-HAVE_PYTHON="$($PYTHON_VER_DIR/python3 --version | cut -f2 -d' ')"
-PYTHON_VER=$(echo $HAVE_PYTHON | cut -f1-2 -d.)
 
 export GLD_ETC=$pkgdatadir
 export GLD_BIN=$bindir
@@ -93,15 +89,20 @@ export GLD_DOC=$docdir
 export GLD_VAR=$vardir
 export GLD_INC=$exec_prefix/include
 export GLD_SRC=$exec_prefix/src
-export PYCCFLAGS="$($PYTHON_VER_DIR/python3-config --cflags)"
+
+. $bindir/pkgenv/bin/activate
+
+
+export PYCCFLAGS="$(python3-config --cflags)"
 export INCLUDE="-I$GLD_ETC -I$GLD_VER/include -I/usr/include"
 export CFLAGS="${INCLUDE} ${PYCCFLAGS} ${CFLAGS}"
 export CCFLAGS="${INCLUDE} ${PYCCFLAGS} ${CCFLAGS}"
 export CPPFLAGS="${INCLUDE} ${PYCCFLAGS} ${CPPFLAGS}"
 export CXXFLAGS="${INCLUDE} ${PYCCFLAGS} ${CXXFLAGS}"
-export PYLDFLAGS="$($PYTHON_VER_DIR/python3-config --ldflags)"
+export PYLDFLAGS="$(python3-config --ldflags)"
 export LIB="-L$libdir -L/usr/local/lib -L$GLD_VER/lib -L/usr/lib"
 export LDFLAGS="${LIB} ${PYLDFLAGS} ${LDFLAGS}"
+export PYTHON_VER=$(python3 --version | cut -f2 -d' ' | cut -f1-2 -d.)
 export PYTHONPATH=.:${GLD_ETC}:${GLD_BIN}/pkgenv/lib/python${PYTHON_VER}/site-packages${PYTHONPATH:+:}${PYTHONPATH}
 
 AS_IF([test "x$GLPATH" = x],
@@ -132,7 +133,7 @@ AS_IF([test -f "${pkgdatadir}/gridlabd.rc"],
   [])
 
 AS_IF([test -f "${GLD_ETC}/$1.py"],
-  [export PYTHONPATH=$GLD_ETC; $PYTHON_VER_DIR/python3 -m "$@" ; exit $?],
+  [export PYTHONPATH=$GLD_ETC; python3 -m "$@" ; exit $?],
   [])
 
 AS_IF([test -x "${bindir}/gridlabd-$1"],
diff --git a/source/gui.cpp b/source/gui.cpp
index 034c31000..8ac99fd3e 100644
--- a/source/gui.cpp
+++ b/source/gui.cpp
@@ -780,7 +780,9 @@ void GldGui::output_html_table(GUIENTITY *entity)
 		if ( line[0]=='#' )
 		{
 			if ( row==0 )
-				strncpy(header,line+1,sizeof(header)-1);
+			{
+				snprintf(header,sizeof(header)-1,"%.*s",(int)(sizeof(header)-2),line+1);
+			}
 		}
 		else 
 		{
diff --git a/source/http_client.cpp b/source/http_client.cpp
index 48cc68bfc..258a9e972 100644
--- a/source/http_client.cpp
+++ b/source/http_client.cpp
@@ -14,7 +14,7 @@ HTTP* hopen(const char *url, int maxlen)
 	char hostname[1024];
 	char filespec[1024];
 	HTTP *http;
-	char request[1024];
+	char request[3000];
 	int len;
 
 #ifdef WIN32
diff --git a/source/instance.cpp b/source/instance.cpp
index 015be358b..55dd7cbf0 100644
--- a/source/instance.cpp
+++ b/source/instance.cpp
@@ -416,7 +416,7 @@ void instance_master_done_socket(instance *inst)
 
 	// write data from cache to buffer
 	memset(inst->buffer, 0, inst->buffer_size);
-	sprintf(inst->buffer, MSG_DATA);
+	snprintf(inst->buffer, inst->buffer_size-1, MSG_DATA);
 	offset = (int)strlen(MSG_DATA);
 	memcpy(inst->buffer+offset, inst->cache, sizeof(MESSAGE));
 	offset += sizeof(MESSAGE);
@@ -569,13 +569,13 @@ STATUS instance_init(instance *inst)
 	// properties are written into the buffer as "obj1.prop1,obj2.prop2 obj3.prop3,obj4.prop4\0".
 	//	a space separates the writers from the readers.
 	for ( lnk=inst->write ; lnk!=NULL ; lnk=lnk->next ){
-		sprintf(inst->message->name_buffer+name_offset, "%s.%s%c", lnk->remote.obj, lnk->remote.prop, (lnk->next == 0 ? ' ' : ','));
+		snprintf(inst->message->name_buffer+name_offset, inst->cachesize, "%s.%s%c", lnk->remote.obj, lnk->remote.prop, (lnk->next == 0 ? ' ' : ','));
 		lnk->addr = (char *)(inst->message->data_buffer + prop_offset);
 		name_offset += lnk->name_size;
 		prop_offset += lnk->prop_size;
 	}
 	for ( lnk=inst->read ; lnk!=NULL ; lnk=lnk->next ){
-		sprintf(inst->message->name_buffer+name_offset, "%s.%s%c", lnk->remote.obj, lnk->remote.prop, (lnk->next == 0 ? '\0' : ','));
+		snprintf(inst->message->name_buffer+name_offset, inst->cachesize, "%s.%s%c", lnk->remote.obj, lnk->remote.prop, (lnk->next == 0 ? '\0' : ','));
 		lnk->addr = (char *)(inst->message->data_buffer + prop_offset);
 		name_offset += lnk->name_size;
 		prop_offset += lnk->prop_size;
diff --git a/source/instance_cnx.cpp b/source/instance_cnx.cpp
index 02c132a5e..9a42da72c 100644
--- a/source/instance_cnx.cpp
+++ b/source/instance_cnx.cpp
@@ -176,7 +176,7 @@ STATUS instance_cnx_socket(instance *inst){
 	}
 
 	// send HS_SYN
-	sprintf(sendcmd, HS_SYN);
+	snprintf(sendcmd, sizeof(sendcmd)-1, HS_SYN);
 	rv = send(outsockfd, sendcmd, 1+(int)strlen(HS_SYN), 0);
 	IN_MYCONTEXT output_debug("%d = send(%d, %x, %d, 0)", rv, outsockfd, sendcmd, 1+strlen(HS_SYN));
 	if(1 > rv){
@@ -458,7 +458,7 @@ STATUS instance_cnx_socket(instance *inst){
 		IN_MYCONTEXT output_debug("i_cnx_s(): recv'ed %d from recv(%d, %x, 1024, 0)", rv, inst->sockfd, cmd);
 	}
 
-	sprintf(cmd, MSG_START);
+	snprintf(cmd, sizeof(cmd)-1, MSG_START);
 	rv = send(inst->sockfd, cmd, (int)strlen(MSG_START), 0);
 	if(0 > rv){
 		output_error("instance_cnx_socket(): error sending start message");
diff --git a/source/instance_slave.cpp b/source/instance_slave.cpp
index 09fdefd9b..170e5d094 100644
--- a/source/instance_slave.cpp
+++ b/source/instance_slave.cpp
@@ -665,7 +665,7 @@ STATUS instance_slave_init_socket(){
 		return FAILED;
 	}
 	// handshake?
-	sprintf(cmd, HS_CBK "%" FMT_INT64 "d", global_slave_id);
+	snprintf(cmd, sizeof(cmd)-1, HS_CBK "%" FMT_INT64 "d", global_slave_id);
 	IN_MYCONTEXT output_debug("cmd/cbk: %s", cmd);
 	rv = send(local_inst.sockfd, cmd, (int)strlen(cmd), 0);
 	if(0 == rv){
diff --git a/source/json.cpp b/source/json.cpp
index 3f9b93489..35438b798 100644
--- a/source/json.cpp
+++ b/source/json.cpp
@@ -93,7 +93,7 @@ const char * escape(const char *buffer, size_t len)
 			}
 			else
 			{
-				p += sprintf(p,"\\u%04hX", (unsigned short)*c);
+				p += snprintf(p,8,"\\u%04hX", (unsigned short)*c);
 			}
 			break;
 		}
diff --git a/source/link/engine/engine.cpp b/source/link/engine/engine.cpp
index fa0d7a7fd..2b297e6e3 100644
--- a/source/link/engine/engine.cpp
+++ b/source/link/engine/engine.cpp
@@ -198,7 +198,7 @@ bool recv_init(ENGINELINK *engine)
 bool send_init(ENGINELINK *engine)
 {
 	char buffer[1500];
-	int len=sprintf(buffer,"GRIDLABD %d.%d.%d (%s)",REV_MAJOR,REV_MINOR,REV_PATCH,BRANCH);
+	int len=snprintf(buffer,sizeof(buffer)-1,"GRIDLABD %d.%d.%d (%s)",REV_MAJOR,REV_MINOR,REV_PATCH,BRANCH);
 	
 	return engine_send(engine,buffer,len+1) > 0;
 }
@@ -206,7 +206,7 @@ bool send_init(ENGINELINK *engine)
 bool send_protocol(ENGINELINK *engine)
 {
         char buffer[1500];
-	int len=sprintf(buffer,"PROTOCOL %s", engine->protocol);
+	int len=snprintf(buffer,sizeof(buffer)-1,"PROTOCOL %s", engine->protocol);
 	return engine_send(engine,buffer,len+1) > 0;
 }
 
@@ -219,7 +219,7 @@ bool send_cachesize(ENGINELINK *engine)
 {
 	if ( engine->cachesize==0 ) recalc_cachesize(engine);
 	char buffer[1500];
-	int len=sprintf(buffer,"CACHESIZE %d", engine->cachesize);
+	int len=snprintf(buffer,sizeof(buffer)-1,"CACHESIZE %d", engine->cachesize);
 	
 	return engine_send(engine,buffer,len+1) > 0;
 }
@@ -227,7 +227,7 @@ bool send_cachesize(ENGINELINK *engine)
 bool send_timeout(ENGINELINK *engine)
 {
 	char buffer[1500];
-	int len=sprintf(buffer,"TIMEOUT %d", engine->recv_timeout);
+	int len=snprintf(buffer,sizeof(buffer)-1,"TIMEOUT %d", engine->recv_timeout);
 	return engine_send(engine,buffer,len) > 0;
 }
 
@@ -237,11 +237,11 @@ bool send_status(ENGINELINK *engine, ENGINELINKSTATUS status,char *msg=NULL)
 	int len;
 	
 	if ( msg==NULL ){
-		len = sprintf(buffer,"%s", enginelinkstatus[status]);
+		len = snprintf(buffer,sizeof(buffer)-1,"%s", enginelinkstatus[status]);
 		return engine_send(engine,buffer,len+1) > 0;
 	}
 	else{
-		len = sprintf(buffer,"%s\n%s", enginelinkstatus[status],msg);
+		len = snprintf(buffer,sizeof(buffer)-1,"%s\n%s", enginelinkstatus[status],msg);
 		return engine_send(engine,buffer,len+1) > 0;
 	}
 }
@@ -273,7 +273,7 @@ bool recv_sync(ENGINELINK *engine,TIMESTAMP *t)
 bool send_time(ENGINELINK *engine,TIMESTAMP t0){
 
   char buffer[1500];
-  int len=sprintf(buffer,"SYNC %lld", t0);
+  int len=snprintf(buffer,sizeof(buffer)-1,"SYNC %lld", t0);
   if(engine_send(engine,buffer,len+1) <=0)
     return false;
   return true;
@@ -286,7 +286,7 @@ bool send_exports(ENGINELINK *engine)
 	SYNCDATA *item;
 	for ( item=engine->send ; item!=NULL ; item=item->next )
 	{
-		len=sprintf(buffer,"%d %s", item->index, item->prop->get_string().get_buffer());
+		len=snprintf(buffer,sizeof(buffer)-1,"%d %s", item->index, item->prop->get_string().get_buffer());
 		if ( engine_send(engine,buffer,len+1)<=0 )
 			return false;
 	}
@@ -343,7 +343,7 @@ bool add_global(ENGINELINK *engine, unsigned int index, GLOBALVAR *var)
 	if(gl_name(prop->get_object(),buffname,255)==NULL){
 		strcpy(buffname,"NULL");
 	}
-	int len = sprintf(buffer,"GLOBAL %d %d %zu %s %s %s", index,
+	int len = snprintf(buffer,sizeof(buffer)-1,"GLOBAL %d %d %zu %s %s %s", index,
 		(PROPERTYTYPE)prop->get_type(), // TODO convert this to text
 		prop->get_size(),buffname, prop->get_name(), prop->get_string().get_buffer());
 	return engine_send(engine,buffer,len+1) > 0;
@@ -357,7 +357,7 @@ bool add_import(ENGINELINK *engine, unsigned int index, OBJECTPROPERTY *objprop)
 	if(gl_name(prop->get_object(),buffname,255)==NULL){
 		strcpy(buffname,"NULL");
 	}
-	int len = sprintf(buffer,"IMPORT %d %d %zu %s %s %s", index,
+	int len = snprintf(buffer,sizeof(buffer)-1,"IMPORT %d %d %zu %s %s %s", index,
 		(PROPERTYTYPE)prop->get_type(), // TODO convert this to text
 		prop->get_size(),buffname, prop->get_name(), prop->get_string().get_buffer());
 	return engine_send(engine,buffer,len+1) > 0;
@@ -371,7 +371,7 @@ bool add_export(ENGINELINK *engine, unsigned int index, OBJECTPROPERTY *objprop)
 	if(gl_name(prop->get_object(),buffname,255)==NULL){
 		strcpy(buffname,"NULL");
 	}
-	int len = sprintf(buffer,"%d %d %zu %s %s %s", index,
+	int len = snprintf(buffer,sizeof(buffer)-1,"%d %d %zu %s %s %s", index,
 		(PROPERTYTYPE)prop->get_type(), // TODO convert this to text
 		prop->get_size(),buffname, prop->get_name(), prop->get_string().get_buffer());
 	return engine_send(engine,buffer,len+1) > 0;
diff --git a/source/module.cpp b/source/module.cpp
index 777c6407c..2178450ae 100644
--- a/source/module.cpp
+++ b/source/module.cpp
@@ -2956,7 +2956,7 @@ void module_load_templates(MODULE *mod)
 	{
 		return;
 	}
-	char loadpath[1024];
+	char loadpath[2060];
 	snprintf(loadpath,sizeof(loadpath)-1,"%s/module.d/%s",global_datadir,mod->name);
 	DIR *dp;
 	struct dirent *entry;
@@ -2966,7 +2966,7 @@ void module_load_templates(MODULE *mod)
 		output_debug("module_load_templates(MODULE *mod=<%s>): reading shared module templates folder '%s'",mod->name,loadpath);
 		while ( (entry=readdir(dp)) )
 		{
-			char file[1024];
+			char file[strlen(loadpath)+strlen(entry->d_name)+2];
 			snprintf(file,sizeof(file)-1,"%s/%s",loadpath,entry->d_name);
 			output_debug("module_load_templates(MODULE *mod=<%s>): loading '%s'",mod->name,file);
 			if ( lstat(file,&statbuf) != 0 )
diff --git a/source/object.cpp b/source/object.cpp
index 1606cafc3..e625e54fd 100644
--- a/source/object.cpp
+++ b/source/object.cpp
@@ -1963,7 +1963,7 @@ int object_event(OBJECT *obj, char *event, long long *p_retval=NULL)
 	}
 	else
 	{
-		char buffer[1024];
+		char buffer[1025];
 		snprintf(buffer,sizeof(buffer)-1,"%lld",global_clock);
 		setenv("CLOCK",buffer,1);
 		snprintf(buffer,sizeof(buffer)-1,"%s",global_hostname);
@@ -2355,7 +2355,10 @@ size_t object_dump(char *outbuffer, /**< the destination buffer */
 	count = strlen(buffer);
 	if ( count < size && count < sizeof(buffer) )
 	{
-		strncpy(outbuffer, buffer, count+1);
+		if ( snprintf(outbuffer,size-1,"%.*s",int(size-1),buffer) < (int)count )
+		{
+			output_warning("object_dump(obj=<%s:%d>): output truncated",obj->oclass->name,obj->id);
+		}
 		return count;
 	} 
 	else 
@@ -2382,11 +2385,11 @@ static size_t object_save_x(char *temp, size_t size, OBJECT *obj, CLASS *oclass)
 		if ( value!=NULL )
 		{
 			if ( prop->ptype==PT_timestamp)  // timestamps require single quotes
-				sprintf(temp+count, "\t%s '%s';\n", prop->name, value);
+				snprintf(temp+count,size-count-1, "\t%s '%s';\n", prop->name, value);
 			else if ( strcmp(value,"")==0 || ( strpbrk(value," \t") && prop->unit==NULL ) ) // double quotes needed empty strings and when white spaces are present in non-real values
-				sprintf(temp+count, "\t%s \"%s\";\n", prop->name, value);
+				snprintf(temp+count,size-count-1, "\t%s \"%s\";\n", prop->name, value);
 			else
-				sprintf(temp+count, "\t%s %s;\n", prop->name, value);
+				snprintf(temp+count,size-count-1, "\t%s %s;\n", prop->name, value);
 			count = strlen(temp);
 		}
 	}
@@ -2409,12 +2412,12 @@ size_t object_save(char *buffer, size_t size, OBJECT *obj)
 		count = strlen(temp);
 	}
 
-	count += sprintf(temp+count, "\trank %d;\n", obj->rank);
+	count += snprintf(temp+count,size-count-1, "\trank %d;\n", obj->rank);
 	if(obj->name != NULL){
 		snprintf(temp+count,size-count-1, "\tname %s;\n", obj->name);
 		count = strlen(temp);
 	}
-	count += sprintf(temp+count,"\tclock %s;\n", convert_from_timestamp(obj->clock, buffer, sizeof(buffer)) > 0 ? buffer : "(invalid)");
+	count += snprintf(temp+count,size-count-1, "\tclock %s;\n", convert_from_timestamp(obj->clock, buffer, sizeof(buffer)) > 0 ? buffer : "(invalid)");
 	if( !isnan(obj->latitude) ){
 		snprintf(temp+count,size-count-1, "\tlatitude %s;\n", convert_from_latitude(obj->latitude, buffer, sizeof(buffer)) ? buffer : "(invalid)");
 		count = strlen(temp);
@@ -3373,7 +3376,10 @@ FORECAST *forecast_create(OBJECT *obj, const char *specs)
 	output_warning("forecast_create(): description parsing not implemented");
 
 	/* copy the description */
-	strncpy(fc->specification,specs,sizeof(fc->specification));
+	if ( snprintf(fc->specification,sizeof(fc->specification)-1,"%.*s",(int)(sizeof(fc->specification)-2),specs) < (int)strlen(specs) )
+	{
+		output_warning("forecast_create(obj=<%s:%d>,specs='%32s...'): long output truncated",obj->oclass->name,obj->id,specs);
+	}
 
 	return fc;
 }
diff --git a/source/output.cpp b/source/output.cpp
index c6a4de622..12ac1f21e 100644
--- a/source/output.cpp
+++ b/source/output.cpp
@@ -47,7 +47,7 @@ bool output_enable_flush(bool enable)
 	return old;
 }
 
-static char prefix[16]="";
+static char prefix[17]="";
 void output_prefix_enable(void)
 {
 	unsigned short cpuid, procid;
diff --git a/source/random.cpp b/source/random.cpp
index 70197cbaf..d7066f0a7 100644
--- a/source/random.cpp
+++ b/source/random.cpp
@@ -1344,44 +1344,40 @@ int convert_from_randomvar(char *string,int size,void *data, PROPERTY *prop)
 int initial_from_randomvar(char *string, int size, void *data, PROPERTY *prop)
 {
 	randomvar *var = (randomvar*)data;
-	char buffer[1024];
+	char buffer[2048];
 	char tmp[1024];
 	if ( _random_specs(var->type,var->a,var->b,tmp,sizeof(tmp)-1) )
 	{
-		snprintf(buffer,sizeof(buffer)-1,"type:%s",tmp);
-		int len = strlen(buffer);
+		int len = snprintf(buffer,sizeof(buffer)-1,"type:%s",tmp);
 		if ( var->low != 0.0 && var->low < var->high )
 		{
-			snprintf(buffer+len,sizeof(buffer)-1-len,"; min:%g",var->low);
-			len = strlen(buffer);
+			len += snprintf(buffer+len,sizeof(buffer)-1-len,"; min:%g",var->low);
 		}
 		if ( var->high != 0.0 && var->low < var->high )
 		{
-			snprintf(buffer+len,sizeof(buffer)-1-len,"; max:%g",var->high);
-			len = strlen(buffer);
+			len += snprintf(buffer+len,sizeof(buffer)-1-len,"; max:%g",var->high);
 		}
 		if ( var->update_rate != 0 )
 		{
-			snprintf(buffer+len,sizeof(buffer)-1-len,"; refresh:%d",var->update_rate);
-			len = strlen(buffer);
+			len += snprintf(buffer+len,sizeof(buffer)-1-len,"; refresh:%d",var->update_rate);
 		}
 		if ( (var->flags&RNF_INTEGRATE) == RNF_INTEGRATE )
 		{
-			snprintf(buffer+len,sizeof(buffer)-1-len,"; integrate");
-			len = strlen(buffer);
+			len += snprintf(buffer+len,sizeof(buffer)-1-len,"; integrate");
 		}
 		if ( var->correlation != NULL )
 		{
 			object_name(var->correlation->object,tmp,sizeof(tmp)-1);
-			snprintf(buffer,sizeof(buffer)-1-len,"; correlate:%s.%s*%lg%+lg",
+			len += snprintf(buffer,sizeof(buffer)-1-len,"; correlate:%s.%s*%lg%+lg",
 				tmp, var->correlation->property->name, var->correlation->scale, var->correlation->bias);
-			len = strlen(buffer);
 		}
-		snprintf(buffer+len,sizeof(buffer)-1-len,"; state:%u",var->state);
-		len = strlen(buffer);
+		len += snprintf(buffer+len,sizeof(buffer)-1-len,"; state:%u",var->state);
 		if ( string )
 		{
-			strncpy(string,buffer,size-1);
+			if ( snprintf(string,size,"%.*s",len,buffer) < len )
+			{
+				output_warning("convert_from_randomvar(...): long output truncated to fit in return buffer");
+			}
 		}
 		return len;
 	}
@@ -1465,7 +1461,7 @@ randomvar *randomvar_getnext(randomvar*var)
 
 size_t randomvar_getspec(char *str, size_t size, const randomvar *var)
 {
-	char buffer[1024];
+	char buffer[2048];
 	char specs[1024];
 	size_t len;
 	if ( _random_specs(var->type,var->a,var->b,specs,sizeof(specs))<=0 )
@@ -1473,13 +1469,15 @@ size_t randomvar_getspec(char *str, size_t size, const randomvar *var)
 	snprintf(buffer,sizeof(buffer)-1,"state: %u; type: %s; min: %g; max: %g; refresh: %u%s",
 		var->state, specs, var->low, var->high, var->update_rate, var->flags&RNF_INTEGRATE ? "; integrate" : "");
 	len = strlen(buffer);
-	if ( len > 0 && len<size )
+	if ( len > 0 && snprintf(str,size,"%.*s",(int)(len),buffer) < (int)len )
 	{
-		strcpy(str,buffer);
-		return len;
+		output_warning("randomvar_getspec(...): long output truncated to fit in return buffer");
+		return size-1;
 	}
 	else
-		return 0;
+	{
+		return len;
+	}
 }
 
 TIMESTAMP randomvar_syncall(TIMESTAMP t1)
diff --git a/source/setup.cpp b/source/setup.cpp
index 91d2795fd..ee55bb8ff 100644
--- a/source/setup.cpp
+++ b/source/setup.cpp
@@ -170,7 +170,7 @@ static void show_help(void)
 static bool do_quit(void)
 {
 	char fname[1024];
-	sprintf(fname,"gridlabd-%s.conf",getenv("USER"));
+	snprintf(fname,sizeof(fname)-1,"gridlabd-%s.conf",getenv("USER"));
 	mvprintw(height,0,"Save to '%s' (Y/N)? [Y]",fname); 
 	return true;
 }
@@ -191,7 +191,7 @@ int setup(void *main, int argc, const char *argv[])
 {
 #ifdef HAVE_CURSES
 	if ( !loadall(NULL) )
-		sprintf(status,"ERROR: %s","unable to load configuration files");
+		snprintf(status,sizeof(status)-1,"ERROR: %s","unable to load configuration files");
 
 	bool done = false;
 	int tab = 0;
diff --git a/source/stream.cpp b/source/stream.cpp
index 688112db0..8457b2616 100644
--- a/source/stream.cpp
+++ b/source/stream.cpp
@@ -58,7 +58,7 @@ int stream_error(const char *format, ...)
 	char buffer[1024];
 	va_list ptr;
 	va_start(ptr,format);
-	vsprintf(buffer,format,ptr);
+	vsnprintf(buffer,sizeof(buffer)-1,format,ptr);
 	va_end(ptr);
 	//output_error("- stream(%d:%d) - %s", b,t,buffer);
 	return -1;
@@ -69,7 +69,7 @@ int stream_warning(const char *format, ...)
 	char buffer[1024];
 	va_list ptr;
 	va_start(ptr,format);
-	vsprintf(buffer,format,ptr);
+	vsnprintf(buffer,sizeof(buffer)-1,format,ptr);
 	va_end(ptr);
 	//output_warning("- stream(%d:%d) - %s", b,t,buffer);
 	return -1;
diff --git a/source/timestamp.cpp b/source/timestamp.cpp
index f9f9ea25d..eb180783c 100644
--- a/source/timestamp.cpp
+++ b/source/timestamp.cpp
@@ -618,8 +618,7 @@ int strdatetime(DATETIME *t, char *buffer, int size)
 	int len = strlen(tbuffer);
 	if ( len < size ) 
 	{
-		strncpy(buffer, tbuffer, len+1);
-		return len;
+		return snprintf(buffer,size-1,"%.*s",len,tbuffer);
 	} 
 	else 
 	{
diff --git a/subcommands/Makefile.mk b/subcommands/Makefile.mk
index f884fa57d..09e2d0a0c 100644
--- a/subcommands/Makefile.mk
+++ b/subcommands/Makefile.mk
@@ -26,5 +26,3 @@ bin_SCRIPTS += subcommands/gridlabd-trace
 bin_SCRIPTS += subcommands/gridlabd-validate
 bin_SCRIPTS += subcommands/gridlabd-version
 bin_SCRIPTS += subcommands/gridlabd-weather
-
-python_requirements += $(top_srcdir)/subcommands/requirements.txt
diff --git a/subcommands/autotest/test_plot.glm b/subcommands/autotest/test_plot.glm
index d1de6c107..4dc7164ca 100644
--- a/subcommands/autotest/test_plot.glm
+++ b/subcommands/autotest/test_plot.glm
@@ -28,7 +28,7 @@ object test
     };
 }
 
-#on_exit 0 gridlabd plot --input=${modelname/glm/csv} --plot:x=timestamp --plot:y=x,y --plot:rot=90 --plot:grid --plot:legend --figure:tight_layout=True
+#on_exit 0 gridlabd plot --input=${modelname/glm/csv} --plot:x=timestamp --plot:y=x,y --plot:rot=vertical --plot:grid --plot:legend --figure:tight_layout=True
 
 #ifexist ../${FILENAME $modelname}.png
 #on_exit 0 diff ../${FILENAME $modelname}.png ${FILENAME $modelname}.png
diff --git a/subcommands/gridlabd-plot b/subcommands/gridlabd-plot
index 9eeace78d..469666cb1 100755
--- a/subcommands/gridlabd-plot
+++ b/subcommands/gridlabd-plot
@@ -227,7 +227,6 @@ def main(args):
         yerr = None,
         xerr = None,
         stacked = False,
-        sort_columns = False,
         secondary_y = False,
         mark_right = True,
         include_bool = False,
diff --git a/subcommands/requirements.txt b/subcommands/requirements.txt
deleted file mode 100644
index 93066d888..000000000
--- a/subcommands/requirements.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-haversine==2.3.0
-pandas==1.4.3
-Shapely==1.8.4
-geopandas>=0.9.0
-PyGithub==1.54.1
-matplotlib==3.3.3
-geopy==2.1.0
-timezonefinder==5.2.0
-geocoder==1.38.1
-ipinfo==4.2.1
diff --git a/third_party/jsonCpp/jsoncpp.cpp b/third_party/jsonCpp/jsoncpp.cpp
index 43792209b..3110068f7 100644
--- a/third_party/jsonCpp/jsoncpp.cpp
+++ b/third_party/jsonCpp/jsoncpp.cpp
@@ -4220,8 +4220,8 @@ JSONCPP_STRING valueToString(double value, bool useSpecialFloats, unsigned int p
   char buffer[36];
   int len = -1;
 
-  char formatString[6];
-  sprintf(formatString, "%%.%dg", precision);
+  char formatString[8];
+  snprintf(formatString, sizeof(formatString)-1,"%%.%dg", precision);
 
   // Print into the buffer. We need not request the alternative representation
   // that always has a decimal point because JSON doesn't distingish the
diff --git a/third_party/superLU_MT/dsp_blas2.c b/third_party/superLU_MT/dsp_blas2.c
index 99576315e..25fcdbe9a 100644
--- a/third_party/superLU_MT/dsp_blas2.c
+++ b/third_party/superLU_MT/dsp_blas2.c
@@ -88,7 +88,6 @@ sp_dtrsv(char *uplo, char *trans, char *diag, SuperMatrix *L,
     register int fsupc, luptr, istart, irow, k, iptr, jcol, nsuper;
     int          nsupr, nsupc, nrow, i;
     double *work;
-    flops_t solve_ops;
 
     /* Test the input parameters */
     *info = 0;
@@ -108,7 +107,6 @@ sp_dtrsv(char *uplo, char *trans, char *diag, SuperMatrix *L,
     Ustore = U->Store;
     Uval = Ustore->nzval;
     nsuper = Lstore->nsuper;
-    solve_ops = 0;
 
     if ( !(work = doubleCalloc(L->nrow)) )
 	SUPERLU_ABORT("Malloc fails for work in sp_dtrsv().");
@@ -127,9 +125,6 @@ sp_dtrsv(char *uplo, char *trans, char *diag, SuperMatrix *L,
 		luptr = L_NZ_START(fsupc);
 		nrow = nsupr - nsupc;
 
-	        solve_ops += nsupc * (nsupc - 1);
-	        solve_ops += 2 * nrow * nsupc;
-
 		if ( nsupc == 1 ) {
 		    for (iptr=istart+1; iptr < L_SUB_END(fsupc); ++iptr) {
 			irow = L_SUB(iptr);
@@ -183,8 +178,6 @@ sp_dtrsv(char *uplo, char *trans, char *diag, SuperMatrix *L,
                 nsupc = L_LAST_SUPC(k) - fsupc;
 	    	luptr = L_NZ_START(fsupc);
 		
-    	        solve_ops += nsupc * (nsupc + 1);
-
 		if ( nsupc == 1 ) {
 		    x[fsupc] /= Lval[luptr];
 		    for (i = U_NZ_START(fsupc); i < U_NZ_END(fsupc); ++i) {
@@ -208,8 +201,7 @@ sp_dtrsv(char *uplo, char *trans, char *diag, SuperMatrix *L,
 		    dusolve ( nsupr, nsupc, &Lval[luptr], &x[fsupc] );
 #endif		
 
-                    for (jcol = fsupc; jcol < fsupc + nsupc; jcol++) {
-		        solve_ops += 2*(U_NZ_END(jcol) - U_NZ_START(jcol));
+            for (jcol = fsupc; jcol < fsupc + nsupc; jcol++) {
 		    	for (i = U_NZ_START(jcol); i < U_NZ_END(jcol); i++) {
 			    irow = U_SUB(i);
 			    x[irow] -= x[jcol] * Uval[i];
@@ -232,8 +224,6 @@ sp_dtrsv(char *uplo, char *trans, char *diag, SuperMatrix *L,
                 nsupc = L_LAST_SUPC(k) - fsupc;
 	    	luptr = L_NZ_START(fsupc);
 
-		solve_ops += 2 * (nsupr - nsupc) * nsupc;
-
 		for (jcol = fsupc; jcol < L_LAST_SUPC(k); jcol++) {
 		    iptr = istart + nsupc;
 		    for (i = L_NZ_START(jcol) + nsupc; 
@@ -245,7 +235,6 @@ sp_dtrsv(char *uplo, char *trans, char *diag, SuperMatrix *L,
 		}
 		
 		if ( nsupc > 1 ) {
-		    solve_ops += nsupc * (nsupc - 1);
 #ifdef _CRAY
                     ftcs1 = _cptofcd("L", strlen("L"));
                     ftcs2 = _cptofcd("T", strlen("T"));
@@ -269,15 +258,12 @@ sp_dtrsv(char *uplo, char *trans, char *diag, SuperMatrix *L,
 	    	luptr = L_NZ_START(fsupc);
 
 		for (jcol = fsupc; jcol < fsupc + nsupc; jcol++) {
-		    solve_ops += 2*(U_NZ_END(jcol) - U_NZ_START(jcol));
 		    for (i = U_NZ_START(jcol); i < U_NZ_END(jcol); i++) {
 			irow = U_SUB(i);
 			x[jcol] -= x[irow] * Uval[i];
 		    }
 		}
 
-		solve_ops += nsupc * (nsupc + 1);
-
 		if ( nsupc == 1 ) {
 		    x[fsupc] /= Lval[luptr];
 		} else {
diff --git a/third_party/superLU_MT/util.c b/third_party/superLU_MT/util.c
index 410ecccd8..980d43281 100644
--- a/third_party/superLU_MT/util.c
+++ b/third_party/superLU_MT/util.c
@@ -136,8 +136,11 @@ pxgstrf_resetrep_col(const int nseg, const int *segrep, int *repfnz)
 void
 countnz(const int n, int *xprune, int *nnzL, int *nnzU, GlobalLU_t *Glu)
 {
-    register int nsuper, fsupc, i, j, nnzL0, jlen, irep;
+    register int nsuper, fsupc, i, j, jlen;
+#if ( PRNTlevel==1 )
+    register int nnzL0, irep;
     register int nnzsup = 0;
+#endif
     register int *xsup, *xsup_end, *xlsub, *xlsub_end, *supno;
 	
     xsup      = Glu->xsup;
@@ -146,7 +149,9 @@ countnz(const int n, int *xprune, int *nnzL, int *nnzU, GlobalLU_t *Glu)
     xlsub_end = Glu->xlsub_end;
     supno     = Glu->supno;
     *nnzU     = Glu->nextu;
+#if ( PRNTlevel==1 )
     nnzL0     = 0;
+#endif
     *nnzL     = 0;
     nsuper    = supno[n];
 
@@ -158,18 +163,22 @@ countnz(const int n, int *xprune, int *nnzL, int *nnzU, GlobalLU_t *Glu)
     for (i = 0; i <= nsuper; i++) {
 	fsupc = xsup[i];
 	jlen = xlsub_end[fsupc] - xlsub[fsupc];
+#if ( PRNTlevel==1 )
 	nnzsup += jlen * (xsup_end[i] - fsupc);
+#endif
 			  
 	for (j = fsupc; j < xsup_end[i]; j++) {
 	    *nnzL += jlen;
 	    *nnzU += j - fsupc + 1;
 	    jlen--;
 	}
-	irep = SUPER_REP(i);
+#if ( PRNTlevel==1 )    
+    irep = SUPER_REP(i);
 	if ( SINGLETON(supno[irep]) )
 	    nnzL0 += xprune[irep] - xlsub_end[irep];
 	else 
 	    nnzL0 += xprune[irep] - xlsub[irep];
+#endif
     }
 
 #if ( PRNTlevel==1 )
diff --git a/tools/autotest/test_fire_report.csv b/tools/autotest/test_fire_report.csv
index dcb0cf1c2..2b382cbcb 100644
--- a/tools/autotest/test_fire_report.csv
+++ b/tools/autotest/test_fire_report.csv
@@ -1,41 +1,41 @@
 datetime,latitude,longitude,material_at_origin,land_use_at_origin,size,suppressed_by,suppressing_agency,facility_identification,other_companies,voltage_volts_,equipment_involved_with_ignition,type,was_there_an_outage,date_1,time_1,suspected_initiating_event,equipment_facility_failure,contact_from_object,facility_contacted,contributing_factor,unnamed_23
-2014-05-29 18:00.00,33.9036301,-118.0386983,Other,Urban,Less Than .25 Acres,Fire Agency,Santa Fe Springs,"14051 Marquadt, Santa Fe Springs 1398339E",None,66kV,Other,Overhead,No,,,Unknown,,,,Unknown,
-2014-06-05 09:20.00,34.555046,-118.117789,Other,Rural,Less Than .25 Acres,Fire Agency,LA County,700 East Ave. S. Palmdale 1103139E,None,12kV,Conductor,Overhead,No,,,Contact From Object,,Other,Electric Facility,Unknown,
-2014-06-08 18:00.00,33.6808854,-117.9487188,Other,Urban,Less Than .25 Acres,Fire Agency,Huntington Beach,"19391, 19381, 19371, Pitcairn, Huntington Beach 1644241E",None,12kV,Other,Overhead,No,,,Contact From Object,,Balloons,Electric Facility,None,
-2014-06-13 13:00.00,35.7151,-118.511067,Vegetation,Rural,1000 - 4999 Acres,Fire Agency,Cal Fire,West of Lake Isabella & South of Hwy 155,None,66kV,Other,Overhead,No,,,Unknown,,,,Unknown,
-2014-06-18 15:00.00,34.162642,-118.676722,Vegetation,Rural,.26 - 9.99 Acres,Fire Agency,LA County,Location of Fire 726730E Calabasas,None,16kV,Conductor,Overhead,Yes,2014-06-18,Unknown,Unknown,,,,Unknown,
+2014-05-29 18:00.00,33.9036301,-118.0386983,Other,Urban,Less Than .25 Acres,Fire Agency,Santa Fe Springs,"14051 Marquadt, Santa Fe Springs 1398339E",,66kV,Other,Overhead,No,,,Unknown,,,,Unknown,
+2014-06-05 09:20.00,34.555046,-118.117789,Other,Rural,Less Than .25 Acres,Fire Agency,LA County,700 East Ave. S. Palmdale 1103139E,,12kV,Conductor,Overhead,No,,,Contact From Object,,Other,Electric Facility,Unknown,
+2014-06-08 18:00.00,33.6808854,-117.9487188,Other,Urban,Less Than .25 Acres,Fire Agency,Huntington Beach,"19391, 19381, 19371, Pitcairn, Huntington Beach 1644241E",,12kV,Other,Overhead,No,,,Contact From Object,,Balloons,Electric Facility,,
+2014-06-13 13:00.00,35.7151,-118.511067,Vegetation,Rural,1000 - 4999 Acres,Fire Agency,Cal Fire,West of Lake Isabella & South of Hwy 155,,66kV,Other,Overhead,No,,,Unknown,,,,Unknown,
+2014-06-18 15:00.00,34.162642,-118.676722,Vegetation,Rural,.26 - 9.99 Acres,Fire Agency,LA County,Location of Fire 726730E Calabasas,,16kV,Conductor,Overhead,Yes,2014-06-18,Unknown,Unknown,,,,Unknown,
 2014-06-23 13:15.00,Not Provided,-118.72947,Vegetation,Rural,10 - 99 Acres,Fire Agency,Cal Fire,"00 Old Stage, Glennville, CA 93226",Unknown,12kV,Conductor,Overhead,Yes,2014-06-23,16:20:00,Contact From Object,,Vegetation,Electric Facility,Unknown,
-2014-06-27 11:06.00,34.608417,-119.500274,Vegetation,Rural,Less Than .25 Acres,Fire Agency,Ventura County,N Ventura Ave,None,16kV,Conductor,Overhead,Yes,2014-06-27,11:06:00,Contact From Object,,Animal,Electric Facility,Unknown,
+2014-06-27 11:06.00,34.608417,-119.500274,Vegetation,Rural,Less Than .25 Acres,Fire Agency,Ventura County,N Ventura Ave,,16kV,Conductor,Overhead,Yes,2014-06-27,11:06:00,Contact From Object,,Animal,Electric Facility,Unknown,
 2014-07-03 11:30.00,34.452932,-119.754773,Vegetation,Urban,Less Than .25 Acres,Fire Agency,Fire Department,C/O  Foothill and Rose ln OH-4551557E,Phone & Cable,16kV,Conductor,Overhead,No,,,Other,,,,Other,
-2014-07-24 13:00.00,33.5444395,-117.1158394,Vegetation,Rural,Less Than .25 Acres,Fire Agency,Not provided,"39613 Liefer Rd., Temecula 2150193E",None,12kV,Lightning Arrestor,Overhead,No,,,Equipment/Facility Failure,Lightning Arrestor,,,Unknown,
+2014-07-24 13:00.00,33.5444395,-117.1158394,Vegetation,Rural,Less Than .25 Acres,Fire Agency,Not provided,"39613 Liefer Rd., Temecula 2150193E",,12kV,Lightning Arrestor,Overhead,No,,,Equipment/Facility Failure,Lightning Arrestor,,,Unknown,
 2014-07-27 18:00.00,36.050199,-119.057484,Vegetation,Rural,Less Than .25 Acres,Fire Agency,Tulare County Fire,"1785 W. POPLAR AVE., PORTERVILE S/E CORNER 
 OF PROPERTY AT FENCE LINE 4447887E",Unknown,12kV,Conductor,Overhead,No,,,Contact From Object,,Vegetation,Electric Facility,Unknown,
-2014-07-29 08:23.00,34.452932,-117.187271,Vegetation,Rural,Less Than .25 Acres,Fire Agency,Riverside County,"UG-5057024,rouse rd, menifee ca ",None,12kV,Conductor,Overhead,No,,,Equipment/Facility Failure,Conductor,,,Unknown,
-2014-07-30 15:00.00,34.159337,-117.290808,Vegetation,Urban,.26 - 9.99 Acres,Fire Agency,San Bernardino Fire,"3750 MAYFIELD PL SAAN BERDO, 66864e and 1499831e",None,12kV,Other,Overhead,Yes,2014-07-30,15:00:00,Contact From Object,,Vegetation,Electric Facility,Human Error,Tree trimmer dropped palm frond on wires.
+2014-07-29 08:23.00,34.452932,-117.187271,Vegetation,Rural,Less Than .25 Acres,Fire Agency,Riverside County,"UG-5057024,rouse rd, menifee ca ",,12kV,Conductor,Overhead,No,,,Equipment/Facility Failure,Conductor,,,Unknown,
+2014-07-30 15:00.00,34.159337,-117.290808,Vegetation,Urban,.26 - 9.99 Acres,Fire Agency,San Bernardino Fire,"3750 MAYFIELD PL SAAN BERDO, 66864e and 1499831e",,12kV,Other,Overhead,Yes,2014-07-30,15:00:00,Contact From Object,,Vegetation,Electric Facility,Human Error,Tree trimmer dropped palm frond on wires.
 2014-07-31 16:00.00,33.7927568,-117.2831691,Other,Rural,Less Than .25 Acres,Fire Agency,Perris Fire Department,"22597 FORREST RD, Perris",Phone & Cable,12kV,Other,Overhead,No,,,Unknown,,,,Unknown,
-2014-08-03 20:00.00,36.342564,-119.375697,Vegetation,Rural,Less Than .25 Acres,Fire Agency,Visalia Fire Department,"NS of Goshen Ave.  1/4 mile west of Shirk Rd. Visalia,Ca, OH-827508E",None,12kV,Conductor,Overhead,No,,,Contact From Object,,Balloons,Pole,Unknown,
+2014-08-03 20:00.00,36.342564,-119.375697,Vegetation,Rural,Less Than .25 Acres,Fire Agency,Visalia Fire Department,"NS of Goshen Ave.  1/4 mile west of Shirk Rd. Visalia,Ca, OH-827508E",,12kV,Conductor,Overhead,No,,,Contact From Object,,Balloons,Pole,Unknown,
 2014-08-12 13:29.00,34.38679,-119.3145,Vegetation,Rural,Less Than .25 Acres,Fire Agency,Ventura County,SANTA ANA BL S/O SANTA ANA RD OAK VIEW,Unknown,16kV,Conductor,Overhead,Yes,2014-08-12,12:05:00,Contact From Object,,Vehicle,Pole,Outside Force,
 2014-08-16 09:00.00,33.7337323,-117.0152318,Vegetation,Rural,Less Than .25 Acres,Fire Agency,Hemet Fire Department," 810 S CAWSTON AVE, 4447283e  ",Phone ,12kV,Other,Overhead,Yes,2014-08-16,09:00:00,Equipment/Facility Failure,Conductor,,,Unknown,
-2014-08-17 15:00.00,33.746982,-117.7992737,Vegetation,Urban,Less Than .25 Acres,Fire Agency,OC Fire Authority,"1622 alta vista dr, santa ana, ca ",None,12kV,Transformer,Overhead,Yes,2014-08-17,16:00:00,Equipment/Facility Failure,Transformer,,,Unknown,
-2014-08-24 08:30.00,34.008754,-117.402176,Building,Urban,.26 - 9.99 Acres,Fire Agency,Riverside County FD,5795  Kenwood Pl Pole 207117S,None,12kV,Other,Overhead,Yes,2014-08-24,08:30:00,Other,,,,Unknown,
+2014-08-17 15:00.00,33.746982,-117.7992737,Vegetation,Urban,Less Than .25 Acres,Fire Agency,OC Fire Authority,"1622 alta vista dr, santa ana, ca ",,12kV,Transformer,Overhead,Yes,2014-08-17,16:00:00,Equipment/Facility Failure,Transformer,,,Unknown,
+2014-08-24 08:30.00,34.008754,-117.402176,Building,Urban,.26 - 9.99 Acres,Fire Agency,Riverside County FD,5795  Kenwood Pl Pole 207117S,,12kV,Other,Overhead,Yes,2014-08-24,08:30:00,Other,,,,Unknown,
 2014-08-30 15:30.00,34.170935,-117.295655,Vegetation,Urban,.26 - 9.99 Acres,Fire Agency,San Bernardino Fire,"4718 Acacia San Bernadino, 688508H",Phone & Cable,4kV,Other,Overhead,No,,,Equipment/Facility Failure,Splice/Clamp/Connector,,,Unknown,
 2014-09-05 14:00.00,34.0276135,-117.9071504,Other,Urban,Less Than .25 Acres,Fire Agency,West Covina FD,"1829 Greenleaf Dr. West Covina, V5011025",,12kV,Other,Subsurface,Yes,2014-09-05,14:00:00,Equipment/Facility Failure,Splice/Clamp/Connector,,,Unknown,
 2014-09-06 14:00.00,33.8780461,-117.5195693,Vegetation,Urban,Less Than .25 Acres,Fire Agency,Riverside County,"13462 magnolia ave, corona 748702E",Unknown,12kV,Conductor,Overhead,Yes,2014-09-06,14:00:00,Unknown,,,,Unknown,
 2014-09-08 11:55.00,34.560012,-118.040194,Other,Urban,Less Than .25 Acres,Fire Agency,LA County,"37316 50TH ST EAST PALMDALE, 1184634E",Phone & Cable,12kV,Conductor,Overhead,No,,,Contact From Object,,Vegetation,Electric Facility,Unknown,
-2014-09-15 16:00.00,34.1740188,-118.05759,Vegetation,Rural,Less Than .25 Acres,Fire Agency,Sierra Madre FD,rear of 630 Sierra Meadows  near structure 1271353E,Unknown,16kV,Other,Overhead,Yes,2014-09-15,15:54:00,Contact From Object,,Balloons,Electric Facility,None,
+2014-09-15 16:00.00,34.1740188,-118.05759,Vegetation,Rural,Less Than .25 Acres,Fire Agency,Sierra Madre FD,rear of 630 Sierra Meadows  near structure 1271353E,Unknown,16kV,Other,Overhead,Yes,2014-09-15,15:54:00,Contact From Object,,Balloons,Electric Facility,,
 2014-09-19 23:20.00,34.038254,-118.871992,Vegetation,Rural,Less Than .25 Acres,Fire Agency,LA County,"32008 PACIFIC COAST HWY MALIBU CA. 90265, 2144754E",Phone & Cable,16kV,Transformer,Overhead,No,,,Contamination,,,,Other,
 2014-10-03 15:00.00,34.0468915,-117.9851278,Other,Urban,Less Than .25 Acres,Unknown,,"1160454e  n/e corner of puente and nelson, la puente, ca",Unknown,12kV,Other,Overhead,No,,,Contact From Object,,Other,Electric Facility,Unknown,
 2014-10-04 16:00.00,34.165225,-117.356623,Other,Urban,Less Than .25 Acres,Fire Agency,San Bernardino Fire,"2497 W. 3rd Ave.San Bernardino, pole has no structure # made R/O to x-mfr pole 2121692e",Unknown,4kV,Other,Overhead,Yes,2014-10-04,16:00:00,Unknown,,,,Unknown,
 2014-10-10 16:24.00,34.204921,-118.874673,Vegetation,Urban,Less Than .25 Acres,Fire Agency,Thousand Oaks,"73 TRIANGLE ST THOUSAND OAKS, CA 1540200E",Unknown,16kV,Conductor,Overhead,Yes,2014-10-10,16:24:00,Contact From Object,,Vegetation,Electric Facility,Unknown,
 2014-11-07 17:00.00,Not Provided,Not Provided,Vegetation,Urban,Less Than .25 Acres,Fire Agency,Redondo Beach Fire Dept,509 s Lucia redondo beach 90277 - A6932Y,Unknown,16kV,Conductor,Overhead,Yes,2014-11-07,19:00:00,Equipment/Facility Failure,Splice/Clamp/Connector,,,Unknown,
-2014-11-10 Not Provided,Not Provided,Not Provided,Vegetation,Urban,Less Than .25 Acres,Fire Agency,Arcadia Fire Department,"R/O School on Santa Anita and Virginia, (FIRST AV PL/W 138' S/O VIRGINIA DR) OH-922691E",None,4kV,Conductor,Overhead,Yes,2014-11-10,Not Provided,Equipment/Facility Failure,Conductor,,,Unknown,
+2014-11-10 Not Provided,Not Provided,Not Provided,Vegetation,Urban,Less Than .25 Acres,Fire Agency,Arcadia Fire Department,"R/O School on Santa Anita and Virginia, (FIRST AV PL/W 138' S/O VIRGINIA DR) OH-922691E",,4kV,Conductor,Overhead,Yes,2014-11-10,Not Provided,Equipment/Facility Failure,Conductor,,,Unknown,
 2014-11-13 12:00.00,34.493402,-117.186397,Building,Urban,Less Than .25 Acres,Fire Agency,Apple Valley Fire Department,21838 Ottawa 4559358E,Unknown,12kV,Other,Overhead,No,,,Contact Between Third Party Facility on Pole and Supply Lines,,,,Unknown,
 2014-11-16 13:30.00,34.048046,-118.68299,Vegetation,Urban,Less Than .25 Acres,Fire Agency,LA County,"R/O 23347 PALM CANYON LANE, (N PP 400 N/O MALIBU CREEK CYN RD BEAR SIERRA) OH-386290E",Unknown,16kV,Conductor,Overhead,Yes,2014-11-16,13:30:00,Contact From Object,,Vegetation,Electric Facility,Unknown,
 2014-11-17 04:30.00,34.312859,-118.898336,Other,Rural,Less Than .25 Acres,Fire Agency,Ventura County,"11856 Broadway rd, moorpark, ca, 93021, 1603560E ",Unknown,16kV,Transformer,Overhead,No,,,Wire-Wire Contact,,,,Weather,
 2014-11-21 04:41.00,34.089112,-117.371182,Vegetation,Urban,Less Than .25 Acres,Fire Agency,RIALTO FD,VACANT FIELD; VACNT LOT NEXT N/O 660 S. RIVERSIDE AVE - 1595040E,Unknown,12kV,Other,Overhead,No,,,Other,,,,Weather,Lightning strike.
 2014-12-02 10:00.00,34.1058474,-117.788153,Other,Urban,Less Than .25 Acres,Fire Agency,La Verne Fire Department,"1025 Bonita Ave., La Verne G24716Y",Phone & Cable,12kV,Capacitor Bank,Overhead,Yes,2014-12-02,10:00:00,Vandalism/Theft,,,,Unknown,
-2014-12-03 19:00.00,34.037689,-117.7595747,Vegetation,Urban,Less Than .25 Acres,Fire Agency,Pomona Fire Department,"1852 GARLAND ST, POMONA, OH-1100807E",None,12kV,Conductor,Overhead,Yes,2014-12-03,19:00:00,Equipment/Facility Failure,Conductor,,,Weather,
+2014-12-03 19:00.00,34.037689,-117.7595747,Vegetation,Urban,Less Than .25 Acres,Fire Agency,Pomona Fire Department,"1852 GARLAND ST, POMONA, OH-1100807E",,12kV,Conductor,Overhead,Yes,2014-12-03,19:00:00,Equipment/Facility Failure,Conductor,,,Weather,
 2014-12-04 04:00.00,34.0119761,-117.970873,Vegetation,Urban,Less Than .25 Acres,Fire Agency,LA County,"Rochlen St. off Kwis private st., SCE Primary pole ( 1046135E & maybe 1046136E & E14291Y )",Phone & Cable,12kV,Conductor,Overhead,Yes,2014-12-04,04:00:00,Other,,,,Unknown,
-2014-12-05 02:52.00,33.9397026,-117.6114641,Vegetation,Rural,Less Than .25 Acres,Fire Agency,Chino Fire Department,"1744 Hellman Chino, CA OH-4280000E",None,12kV,Other,Overhead,No,,,Vandalism/Theft,,,,Other,
-2014-12-12 01:30.00,35.9219806,-119.0178838,Vegetation,Rural,Less Than .25 Acres,Fire Agency,Tulare County Fire Department,"7260 Rd. 248 Terra Bella, CA, 1901852E",None,12kV,Conductor,Overhead,No,,,Contact From Object,,Vegetation,Electric Facility,Weather,
+2014-12-05 02:52.00,33.9397026,-117.6114641,Vegetation,Rural,Less Than .25 Acres,Fire Agency,Chino Fire Department,"1744 Hellman Chino, CA OH-4280000E",,12kV,Other,Overhead,No,,,Vandalism/Theft,,,,Other,
+2014-12-12 01:30.00,35.9219806,-119.0178838,Vegetation,Rural,Less Than .25 Acres,Fire Agency,Tulare County Fire Department,"7260 Rd. 248 Terra Bella, CA, 1901852E",,12kV,Conductor,Overhead,No,,,Contact From Object,,Vegetation,Electric Facility,Weather,
 2014-12-27 08:17.00,34.0719543,-117.8389807,Vegetation,Urban,Less Than .25 Acres,Fire Agency,LA County,covina hills x CALLE FRANCESCA,Phone & Cable,12kV,Switch,Overhead,Yes,,,Contact From Object,,Animal,Pole,Outside Force,
diff --git a/tools/autotest/test_fire_report.glm b/tools/autotest/test_fire_report.glm
index d22fa86bf..1df6b825c 100644
--- a/tools/autotest/test_fire_report.glm
+++ b/tools/autotest/test_fire_report.glm
@@ -1,5 +1,5 @@
 #python -m fire_report -s=CA -y=2014 -u=SCE > test_fire_report.csv
 
 #ifexist ../test_fire_report.csv
-#on_exit 0 diff -q ../test_fire_report.csv test_fire_report.csv > gridlabd.diff
+#on_exit 0 diff ../test_fire_report.csv test_fire_report.csv > gridlabd.diff
 #endif
diff --git a/tools/autotest/test_fit_filter_opt.glm b/tools/autotest/test_fit_filter_opt.glm
index 9ceb05c1f..d0eab347c 100644
--- a/tools/autotest/test_fit_filter_opt.glm
+++ b/tools/autotest/test_fit_filter_opt.glm
@@ -1,10 +1,13 @@
-// generated from 'gridlabd fit_filter -o=test_fit_filter_power.csv -i=test_fit_filter_weather.csv -g=test_fit_filter_opt.glm'
-#define FIT_FILTER_VERSION_NUMBER=4.2.31
-#define FIT_FILTER_VERSION_BUILD=220306
-#define FIT_FILTER_VERSION_BRANCH=develop_fix_repo_structure
+// generated from 'gridlabd fit_filter -o=./test_fit_filter_power.csv -i=./test_fit_filter_weather.csv -g=test_fit_filter_opt.glm'
+#define FIT_FILTER_VERSION_NUMBER=4.3.1
+#define FIT_FILTER_VERSION_BUILD=230420
+#define FIT_FILTER_VERSION_BRANCH=develop_fix_warnings
+
+// datetime --> real_power
+filter real_power_datetime(z,1h,0) = (+3.623106z^24-0.017946z^23+3.001864z^22+0.396459z^21-1.748367z^20-0.076999z^19-1.066438z^18-0.130105z^17-1.566783z^16+0.064437z^15+1.420731z^14-0.108540z^13+0.444174z^12-0.053894z^11+0.086299z^10+0.246488z^9-1.111616z^8-0.155597z^7+0.003624z^6-0.053142z^5+0.032900z^4-0.014080z^3+0.044238z^2+0.011413z^1+0.262105z^0-0.446883 ) / (z^24-1.089725z^23+0.155597z^22+0.089853z^21-0.034706z^20-0.003624z^19+0.009982z^18+0.030937z^17+0.053142z^16+0.007617z^15-0.105643z^14-0.032900z^13+0.058990z^12-0.053445z^11+0.014080z^10+0.110442z^9-0.014187z^8-0.044238z^7-0.030616z^6-0.007644z^5-0.011413z^4+0.028332z^3-0.025925z^2-0.262105z^1+0.157685);
 
 // solar --> real_power
-filter real_power_solar(z,1h,0) = (+0.747791z^24-2.007886z^23+0.402110z^22+1.080511z^21+2.044673z^20-1.409764z^19-0.351070z^18+0.161326z^17-0.579984z^16-0.293754z^15-0.022159z^14+0.389568z^13-0.769093z^12+0.083049z^11-0.000702z^10+0.333702z^9+0.666754z^8-0.964772z^7+0.215895z^6+0.292445z^5+0.022275z^4+0.832287z^3-0.355349z^2+0.064982z^1-0.564365z^0-0.130202 ) / (z^24-1.698539z^23+1.087818z^22-0.467249z^21+0.130782z^20-0.001960z^19+0.006006z^18+0.052487z^17-0.059877z^16+0.068064z^15-0.175377z^14+0.109224z^13+0.013905z^12-0.033389z^11-0.036004z^10+0.161507z^9-0.132834z^8+0.049105z^7-0.054204z^6+0.005446z^5+0.003286z^4-0.039029z^3+0.273071z^2-0.693408z^1+0.431988);
+filter real_power_solar(z,1h,0) = (+3.623106z^24-0.017946z^23+3.001864z^22+0.396459z^21-1.748367z^20-0.076999z^19-1.066438z^18-0.130105z^17-1.566783z^16+0.064437z^15+1.420731z^14-0.108540z^13+0.444174z^12-0.053894z^11+0.086299z^10+0.246488z^9-1.111616z^8-0.155597z^7+0.003624z^6-0.053142z^5+0.032900z^4-0.014080z^3+0.044238z^2+0.011413z^1+0.262105z^0-1.111616 ) / (z^24-1.089725z^23+0.155597z^22+0.089853z^21-0.034706z^20-0.003624z^19+0.009982z^18+0.030937z^17+0.053142z^16+0.007617z^15-0.105643z^14-0.032900z^13+0.058990z^12-0.053445z^11+0.014080z^10+0.110442z^9-0.014187z^8-0.044238z^7-0.030616z^6-0.007644z^5-0.011413z^4+0.028332z^3-0.025925z^2-0.262105z^1+0.157685);
 
 // temperature --> real_power
-filter real_power_temperature(z,1h,0) = (+0.747791z^24-2.007886z^23+0.402110z^22+1.080511z^21+2.044673z^20-1.409764z^19-0.351070z^18+0.161326z^17-0.579984z^16-0.293754z^15-0.022159z^14+0.389568z^13-0.769093z^12+0.083049z^11-0.000702z^10+0.333702z^9+0.666754z^8-0.964772z^7+0.215895z^6+0.292445z^5+0.022275z^4+0.832287z^3-0.355349z^2+0.064982z^1-0.564365z^0-0.564365 ) / (z^24-1.698539z^23+1.087818z^22-0.467249z^21+0.130782z^20-0.001960z^19+0.006006z^18+0.052487z^17-0.059877z^16+0.068064z^15-0.175377z^14+0.109224z^13+0.013905z^12-0.033389z^11-0.036004z^10+0.161507z^9-0.132834z^8+0.049105z^7-0.054204z^6+0.005446z^5+0.003286z^4-0.039029z^3+0.273071z^2-0.693408z^1+0.431988);
+filter real_power_temperature(z,1h,0) = (+3.623106z^24-0.017946z^23+3.001864z^22+0.396459z^21-1.748367z^20-0.076999z^19-1.066438z^18-0.130105z^17-1.566783z^16+0.064437z^15+1.420731z^14-0.108540z^13+0.444174z^12-0.053894z^11+0.086299z^10+0.246488z^9-1.111616z^8-0.155597z^7+0.003624z^6-0.053142z^5+0.032900z^4-0.014080z^3+0.044238z^2+0.011413z^1+0.262105z^0+0.267470 ) / (z^24-1.089725z^23+0.155597z^22+0.089853z^21-0.034706z^20-0.003624z^19+0.009982z^18+0.030937z^17+0.053142z^16+0.007617z^15-0.105643z^14-0.032900z^13+0.058990z^12-0.053445z^11+0.014080z^10+0.110442z^9-0.014187z^8-0.044238z^7-0.030616z^6-0.007644z^5-0.011413z^4+0.028332z^3-0.025925z^2-0.262105z^1+0.157685);
diff --git a/tools/autotest/test_market_model_opt.glm b/tools/autotest/test_market_model_opt.glm
index 4ab60b27e..cba52c798 100644
--- a/tools/autotest/test_market_model_opt.glm
+++ b/tools/autotest/test_market_model_opt.glm
@@ -1,3 +1,6 @@
 
+// START_TIME_LOCAL --> MW
+filter MW_START_TIME_LOCAL(z,1h,0) = (+5.070250z^24+0.088543z^23-0.201224z^22-0.231848z^21-0.060805z^20-0.438895z^19-0.362031z^18-0.044339z^17-0.361887z^16-0.126706z^15-0.282665z^14-1.584616z^13-1.117597z^12-2.889171z^11-5.407557z^10+0.028384z^9-2.400548z^8+1.420422z^7+6.340522z^6-2.220970z^5-2.253462z^4-3.997662z^3-14.650178z^2+3.938674z^1+2.774227z^0+3.938674 ) / (z^24-5.070250z^23-2.774227z^22-0.088543z^21-0.068133z^20+0.201224z^19-0.308082z^18+0.231848z^17-0.069741z^16+0.060805z^15-0.207111z^14+0.438895z^13-0.520654z^12+0.362031z^11-0.093934z^10+0.044339z^9-0.232001z^8+0.361887z^7-0.310918z^6+0.126706z^5-0.068516z^4+0.282665z^3-0.812875z^2+1.584616z^1-1.905473);
+
 // LMP --> MW
-filter MW_LMP(z,1h,0) = (-1.117597z^24-4.357008z^23-2.889171z^22+5.006946z^21-5.407557z^20+5.581075z^19+0.028384z^18-5.631783z^17-2.400548z^16+9.474545z^15+1.420422z^14-5.249877z^13+6.340522z^12-1.653639z^11-2.220970z^10+4.038458z^9-2.253462z^8+3.986717z^7-3.997662z^6+7.884185z^5-14.650178z^4+1.498585z^3+3.938674z^2+5.070250z^1+2.774227z^0+3.938674 ) / (z^24-5.070250z^23-2.774227z^22-0.088543z^21-0.068133z^20+0.201224z^19-0.308082z^18+0.231848z^17-0.069741z^16+0.060805z^15-0.207111z^14+0.438895z^13-0.520654z^12+0.362031z^11-0.093934z^10+0.044339z^9-0.232001z^8+0.361887z^7-0.310918z^6+0.126706z^5-0.068516z^4+0.282665z^3-0.812875z^2+1.584616z^1-1.905473);
+filter MW_LMP(z,1h,0) = (+5.070250z^24+0.088543z^23-0.201224z^22-0.231848z^21-0.060805z^20-0.438895z^19-0.362031z^18-0.044339z^17-0.361887z^16-0.126706z^15-0.282665z^14-1.584616z^13-1.117597z^12-2.889171z^11-5.407557z^10+0.028384z^9-2.400548z^8+1.420422z^7+6.340522z^6-2.220970z^5-2.253462z^4-3.997662z^3-14.650178z^2+3.938674z^1+2.774227z^0+1.498585 ) / (z^24-5.070250z^23-2.774227z^22-0.088543z^21-0.068133z^20+0.201224z^19-0.308082z^18+0.231848z^17-0.069741z^16+0.060805z^15-0.207111z^14+0.438895z^13-0.520654z^12+0.362031z^11-0.093934z^10+0.044339z^9-0.232001z^8+0.361887z^7-0.310918z^6+0.126706z^5-0.068516z^4+0.282665z^3-0.812875z^2+1.584616z^1-1.905473);
diff --git a/tools/create_player.py b/tools/create_player.py
index acbeb8738..641a7e053 100644
--- a/tools/create_player.py
+++ b/tools/create_player.py
@@ -72,8 +72,6 @@
     
     parse_dates : [0]
 
-    infer_datetime_format : True
-    
     dayfirst : False
 
 The follow WRITEOPIONS are given by default (see Pandas to_csv for details):
@@ -202,7 +200,6 @@
     "header" : 0,
     "index_col" : 0,
     "parse_dates" : [0],
-    "infer_datetime_format" : True,
     "dayfirst" : False,
     }
 
@@ -347,7 +344,7 @@ def main(argv):
             DATA.set_index(DATA.columns[0],inplace=True)
             DATA.drop(DATA.columns[0],axis=1,inplace=True)
             DATA.columns = [specs[0]]
-        DATA.index = [dt.datetime.fromtimestamp(x,dt.timezone.utc) for x in DATA.index.astype('uint64')/1000000000]
+        DATA.index = [dt.datetime.fromtimestamp(x,dt.timezone.utc) for x in DATA.index.astype('int64')/1000000000]
 
         # resample
         if "resample" in OPTIONS.keys():
diff --git a/tools/fit_filter.py b/tools/fit_filter.py
index 6eba0cad4..d2c5af0ff 100644
--- a/tools/fit_filter.py
+++ b/tools/fit_filter.py
@@ -385,7 +385,7 @@ class converters:
             output_data = pd.read_csv(outputs, usecols=output_cols, converters=converters.outputs)
             output_names = output_data.columns[1:]
             ndx = list(map(lambda t:datetime(t.year,t.month,t.day,t.hour),pd.DatetimeIndex(output_data[output_data.columns[0]])))
-            data = pd.DataFrame(output_data.groupby(ndx)[output_data.columns[1]].mean())
+            data = pd.DataFrame(output_data.groupby(ndx)[output_data.columns[1]].min())
             verbose(data)
 
             if converters.inputs:
@@ -422,7 +422,7 @@ class converters:
                     input_data[f"month{month}"] = list(map(lambda x: int(x==month),months))
             input_names = input_data.columns[1:]
             ndx = list(map(lambda t:datetime(t.year,t.month,t.day,t.hour),pd.DatetimeIndex(input_data[input_data.columns[0]])))
-            data = input_data.groupby(ndx).mean().join(data).dropna()
+            data = input_data.groupby(ndx).min().join(data).dropna()
             verbose(data)
 
         except Exception as err:
diff --git a/tools/market_model.py b/tools/market_model.py
index 9c14b830b..071bf4bfd 100644
--- a/tools/market_model.py
+++ b/tools/market_model.py
@@ -131,7 +131,7 @@ def identify(Y, U, K=24, l=0):
     )
 
     Y, M = look_ahead(M, Y, K, l)
-    x = np.linalg.lstsq(M, Y)[0]
+    x = np.linalg.lstsq(M, Y, rcond=None)[0]
 
     if debug_enabled:
         print(np.hstack([M, Y[K + 1 :]]), file=sys.stderr)
@@ -475,7 +475,7 @@ def datetime(x):
                     end="",
                 )
                 for k in range(0, K + 1):
-                    print(f"{x[-k * n_inputs - 1, 0]:+f}z^{K - k:.0f}", end="")
+                    print(f"{x[K - k * n_inputs - 1, 0]:+f}z^{K - k:.0f}", end="")
                 print(f"{x[K + n, 0]:+f} ) / (z^{K:.0f}", end="")
                 for k in range(1, K):
                     print(f"{-x[K - k, 0]:+f}z^{K - k:.0f}", end="")
diff --git a/tools/requirements.txt b/tools/requirements.txt
deleted file mode 100644
index 61c09c95d..000000000
--- a/tools/requirements.txt
+++ /dev/null
@@ -1,5 +0,0 @@
-metar>=1.8.0
-boto3>=1.19.11
-control>=0.9.0
-rasterio>=1.2.10
-pysolar>=0.9
diff --git a/tutorials/requirements.txt b/tutorials/requirements.txt
deleted file mode 100644
index d05dad735..000000000
--- a/tutorials/requirements.txt
+++ /dev/null
@@ -1 +0,0 @@
-matplotlib_inline>=0.1.2
diff --git a/utilities/cleanwc b/utilities/cleanwc
old mode 100644
new mode 100755