diff --git a/README.md b/README.md
index f2b8bec..8d89e19 100644
--- a/README.md
+++ b/README.md
@@ -46,7 +46,7 @@
 Check out the required git submodules with:
 
 ``` bash
-$ git submodule update --init --recursive
+git submodule update --init --recursive
 ```
 
 # Compilation
@@ -54,16 +54,16 @@
 The *TOSA Reference Model* build can be prepared by creating makefiles using CMake:
 
 ``` bash
-$ mkdir -p build
-$ cd build
-$ cmake ..
+mkdir -p build
+cd build
+cmake ..
 ```
 
 Optionally, `-DCMAKE_BUILD_MODE=Debug` can be used on the `cmake`
 command to create a debug build.  Next compile using `make`:
 
 ``` bash
-$ make
+make
 ```
 
 The resulting executable will be named:
@@ -101,7 +101,7 @@
     type: int
     The expected return code of the reference model i
     (0 = VALID, 1 = ERROR, 2 = UNPREDICTABLE)
-   
+
 Note by default, all the files specified by "tosa_file", "ifm_file",
 "ofm_file" are relative to desc.json. This could be overwritten by
 -Cflatbuffer_dir=, if desired.
@@ -109,7 +109,7 @@
 An example command is shown below:
 
 ``` bash
-$ ./build/reference_model/tosa_reference_model \
+./build/reference_model/tosa_reference_model \
   -Ctest_desc=examples/test_add_1x4x4x4_f32/flatbuffer-tflite/desc.json
 ```
 
@@ -127,7 +127,7 @@
 
 For example, you can generate new output .npy by:
 ``` bash
-$ ./build/reference_model/tosa_reference_model \
+./build/reference_model/tosa_reference_model \
   -Ctest_desc=examples/test_add_1x4x4x4_f32/flatbuffer-tflite/desc.json
   -Cofm_file=out.npy
 ```
@@ -193,10 +193,24 @@
 files are generated by this step and can be programatically compared
 with output of other tools. to validate those tools.
 
+## Installation
+
+The test infrastructure needs installing before being used. It is recommended
+to create a [python virtual environment](https://docs.python.org/3/library/venv.html)
+and then install the TOSA Unit Test infrastruture from the root of the
+reference model:
+
+``` bash
+pip install .
+```
+
+When installing without a python virtual environment, use the pip
+option `--user` to install it for the current user only.
+
 ## Usage
 
 ### Unit Test Builder
-The test builder is in ``verif/tosa_verif_build_tests.py``.  The
+The test builder is invoked by ``tosa_verif_build_tests``.  The
 builder generates test outputs in ``./vtest/<operator_name>/`` by
 default.  To restrict test generation to particular regular expression
 wildcard, use the ``--filter `` argument.  The tool can be run with no
@@ -222,7 +236,7 @@
 add operator tests:
 
 ``` bash
-$ ./verif/tosa_verif_run_ref.py -t vtest/add/add* -j 8
+tosa_verif_run_ref -t vtest/add/add* -j 8
 ```
 
 The test runner is quiet by default, so running a large number of
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..49aa0ed
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,12 @@
+# Copyright (c) 2021-2022 Arm Limited.
+# SPDX-License-Identifier: Apache-2.0
+
+[build-system]
+requires = [
+    "setuptools>=42",
+    "wheel",
+    "setuptools_scm[toml]>=6.0"
+]
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools_scm]
diff --git a/scripts/py-dev-env.bash b/scripts/py-dev-env.bash
new file mode 100644
index 0000000..82c16e3
--- /dev/null
+++ b/scripts/py-dev-env.bash
@@ -0,0 +1,24 @@
+# Copyright (c) 2021-2022 Arm Limited.
+# SPDX-License-Identifier: Apache-2.0
+
+# Source this script to install the python tosa tools as editable:
+#       . scripts/py-dev-env.bash
+
+# NOTE: This script is needed to fix up PYTHONPATH due to a bug
+# in setuptools that does not support multiple package_dirs
+# properly: https://github.com/pypa/setuptools/issues/230
+
+if [ -z "$VIRTUAL_ENV" ]; then
+    echo "Please source this within a python virtual env"
+    return
+fi
+
+if [ -e "${BASH_SOURCE[0]}" ]; then
+    SCRIPTS_DIR=$(dirname $(readlink -f "${BASH_SOURCE[0]}"))
+    REFMODEL_DIR=$(dirname "$SCRIPTS_DIR")
+    pip install -e "$REFMODEL_DIR"
+    export PYTHONPATH="$SCRIPTS_DIR:$REFMODEL_DIR/thirdparty/serialization_lib/python"
+    echo "Set PYTHONPATH=$PYTHONPATH"
+else
+    echo "Please source this using bash"
+fi
diff --git a/scripts/py-dev-env.sh b/scripts/py-dev-env.sh
new file mode 100644
index 0000000..904ff80
--- /dev/null
+++ b/scripts/py-dev-env.sh
@@ -0,0 +1,22 @@
+# Copyright (c) 2021-2022 Arm Limited.
+# SPDX-License-Identifier: Apache-2.0
+
+# Source this script to install the python tosa tools as editable:
+#       . scripts/py-dev-env.sh
+
+# NOTE: This script is needed to fix up PYTHONPATH due to a bug
+# in setuptools that does not support multiple package_dirs
+# properly: https://github.com/pypa/setuptools/issues/230
+
+if [ -z "$VIRTUAL_ENV" ]; then
+    echo "Please source this within a python virtual env"
+    return
+fi
+
+if [ -e "setup.cfg" ]; then
+    pip install -e .
+    export PYTHONPATH=$PWD/scripts:$PWD/thirdparty/serialization_lib/python
+    echo "Set PYTHONPATH=$PYTHONPATH"
+else
+    echo "Please source this from the root of reference_model"
+fi
diff --git a/scripts/xunit/__init__.py b/scripts/xunit/__init__.py
new file mode 100644
index 0000000..39e9ecc
--- /dev/null
+++ b/scripts/xunit/__init__.py
@@ -0,0 +1,3 @@
+"""Namespace."""
+# Copyright (c) 2021-2022 Arm Limited.
+# SPDX-License-Identifier: Apache-2.0
diff --git a/setup.cfg b/setup.cfg
new file mode 100644
index 0000000..5b7ffc4
--- /dev/null
+++ b/setup.cfg
@@ -0,0 +1,40 @@
+# Copyright (c) 2021-2022 Arm Limited.
+# SPDX-License-Identifier: Apache-2.0
+
+[metadata]
+name = tosa-tools
+# version = done by setuptools_scm in pyproject.toml
+author = Arm Limited
+#author_email =
+description = TOSA tools
+long_description = file: README.md
+long_description_content_type = text/markdown
+url = https://git.mlplatform.org/tosa/reference_model.git/
+project_urls =
+    Website = https://developer.mlplatform.org/w/tosa/
+classifiers =
+    Programming Language :: Python :: 3
+    License :: OSI Approved :: Apache Software License
+    Operating System :: OS Independent
+
+[options]
+install_requires =
+    numpy
+    flatbuffers == 2.0
+python_requires = >=3.6
+packages =
+    runner
+    generator
+    xunit
+    tosa
+    serializer
+package_dir =
+    = verif
+    xunit = scripts/xunit
+    tosa = thirdparty/serialization_lib/python/tosa
+    serializer = thirdparty/serialization_lib/python/serializer
+
+[options.entry_points]
+console_scripts =
+    tosa_verif_run_ref = runner.tosa_verif_run_ref:main
+    tosa_verif_build_tests = generator.tosa_verif_build_tests:main
diff --git a/setup.py b/setup.py
new file mode 100644
index 0000000..4916510
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,6 @@
+# Copyright (c) 2021-2022 Arm Limited.
+# SPDX-License-Identifier: Apache-2.0
+"""Setup script for backward compatibility."""
+from setuptools import setup
+
+setup()
diff --git a/thirdparty/serialization_lib b/thirdparty/serialization_lib
index 49faa4e..9b22517 160000
--- a/thirdparty/serialization_lib
+++ b/thirdparty/serialization_lib
@@ -1 +1 @@
-Subproject commit 49faa4e42b763dbbce214bb101619bf395cf836a
+Subproject commit 9b22517ba0cd6f767123583ce56e864f50e9d758
diff --git a/verif/generator/__init__.py b/verif/generator/__init__.py
new file mode 100644
index 0000000..39e9ecc
--- /dev/null
+++ b/verif/generator/__init__.py
@@ -0,0 +1,3 @@
+"""Namespace."""
+# Copyright (c) 2021-2022 Arm Limited.
+# SPDX-License-Identifier: Apache-2.0
diff --git a/verif/tosa_error_if.py b/verif/generator/tosa_error_if.py
similarity index 100%
rename from verif/tosa_error_if.py
rename to verif/generator/tosa_error_if.py
diff --git a/verif/tosa_test_gen.py b/verif/generator/tosa_test_gen.py
similarity index 99%
rename from verif/tosa_test_gen.py
rename to verif/generator/tosa_test_gen.py
index 0d29704..0d5a881 100644
--- a/verif/tosa_test_gen.py
+++ b/verif/generator/tosa_test_gen.py
@@ -32,17 +32,11 @@
 from copy import deepcopy
 
 from enum import IntEnum, Enum, unique
-from tosa_ref_run import TosaReturnCode
 
-# Include the ../thirdparty/serialization_lib/python directory in PYTHONPATH
-parent_dir = os.path.dirname(os.path.realpath(__file__))
-sys.path.append(
-    os.path.join(parent_dir, "..", "thirdparty", "serialization_lib", "python")
-)
-import tosa_serializer as ts
-from tosa_serializer import *
+import serializer.tosa_serializer as ts
+from serializer.tosa_serializer import *
 import tosa
-from tosa_error_if import ErrorIf
+from generator.tosa_error_if import ErrorIf
 
 # Convenience variables to the flatc-generated types that should be enums, but aren't
 from tosa.DType import DType
@@ -1587,7 +1581,7 @@
             overall_result &= expected_result
 
             if expected_result and error_result:
-                serializer.setExpectedReturnCode(2, error_reason)
+                serializer.setExpectedReturnCode(2, True, desc=error_reason)
             elif error_result:  # and not expected_result
                 print(f"Unexpected ERROR_IF: Op: {valueToName(Op, kwargs['op']['op'])}"
                       f" Expected: {error_name}, Got: {validator_name}")
diff --git a/verif/tosa_verif_build_tests.py b/verif/generator/tosa_verif_build_tests.py
old mode 100755
new mode 100644
similarity index 90%
rename from verif/tosa_verif_build_tests.py
rename to verif/generator/tosa_verif_build_tests.py
index c667e79..09ee238
--- a/verif/tosa_verif_build_tests.py
+++ b/verif/generator/tosa_verif_build_tests.py
@@ -1,6 +1,4 @@
-#!/usr/bin/env python3
-
-# Copyright (c) 2020, ARM Limited.
+# Copyright (c) 2020-2021, ARM Limited.
 #
 #    Licensed under the Apache License, Version 2.0 (the "License");
 #    you may not use this file except in compliance with the License.
@@ -32,21 +30,8 @@
 from enum import IntEnum, Enum, unique
 from datetime import datetime
 
-# Include the ../scripts and ../scripts/xunit directory in PYTHONPATH
-parent_dir = os.path.dirname(os.path.realpath(__file__))
-sys.path.append(os.path.join(parent_dir, "..", "scripts"))
-sys.path.append(os.path.join(parent_dir, "..", "scripts", "xunit"))
-
-import xunit
-
-# Include the ../thirdparty/serialization_lib/python directory in PYTHONPATH
-parent_dir = os.path.dirname(os.path.realpath(__file__))
-sys.path.append(
-    os.path.join(parent_dir, "..", "thirdparty", "serialization_lib", "python")
-)
-from tosa_serializer import *
-from tosa_test_gen import TosaTestGen
-import tosa
+from generator.tosa_test_gen import TosaTestGen
+from serializer.tosa_serializer import dtype_str_to_val
 
 # Used for parsing a comma-separated list of integers in a string
 # to an actual list of integers
diff --git a/verif/runner/__init__.py b/verif/runner/__init__.py
new file mode 100644
index 0000000..39e9ecc
--- /dev/null
+++ b/verif/runner/__init__.py
@@ -0,0 +1,3 @@
+"""Namespace."""
+# Copyright (c) 2021-2022 Arm Limited.
+# SPDX-License-Identifier: Apache-2.0
diff --git a/verif/tosa_ref_run.py b/verif/runner/tosa_ref_run.py
similarity index 97%
rename from verif/tosa_ref_run.py
rename to verif/runner/tosa_ref_run.py
index de35d93..c1d5e79 100644
--- a/verif/tosa_ref_run.py
+++ b/verif/runner/tosa_ref_run.py
@@ -17,7 +17,7 @@
 import shlex
 import subprocess
 from enum import Enum, IntEnum, unique
-from tosa_test_runner import TosaTestRunner, run_sh_command
+from runner.tosa_test_runner import TosaTestRunner, run_sh_command
 
 
 @unique
diff --git a/verif/tosa_test_runner.py b/verif/runner/tosa_test_runner.py
similarity index 100%
rename from verif/tosa_test_runner.py
rename to verif/runner/tosa_test_runner.py
diff --git a/verif/tosa_verif_run_ref.py b/verif/runner/tosa_verif_run_ref.py
old mode 100755
new mode 100644
similarity index 90%
rename from verif/tosa_verif_run_ref.py
rename to verif/runner/tosa_verif_run_ref.py
index 0bfca0f..626819f
--- a/verif/tosa_verif_run_ref.py
+++ b/verif/runner/tosa_verif_run_ref.py
@@ -1,6 +1,4 @@
-#!/usr/bin/env python3
-
-# Copyright (c) 2020, ARM Limited.
+# Copyright (c) 2020-2021, ARM Limited.
 #
 #    Licensed under the Apache License, Version 2.0 (the "License");
 #    you may not use this file except in compliance with the License.
@@ -33,21 +31,9 @@
 from enum import IntEnum, Enum, unique
 from datetime import datetime
 
-# Include the ../scripts and ../scripts/xunit directory in PYTHONPATH
-parent_dir = os.path.dirname(os.path.realpath(__file__))
-sys.path.append(os.path.join(parent_dir, "..", "scripts"))
-sys.path.append(os.path.join(parent_dir, "..", "scripts", "xunit"))
+from xunit import xunit
 
-import xunit
-
-# Include the ../thirdparty/serialization_lib/python directory in PYTHONPATH
-parent_dir = os.path.dirname(os.path.realpath(__file__))
-sys.path.append(
-    os.path.join(parent_dir, "..", "thirdparty", "serialization_lib", "python")
-)
-import tosa
-from tosa_test_gen import TosaTestGen
-from tosa_test_runner import TosaTestRunner
+from runner.tosa_test_runner import TosaTestRunner
 
 no_color_printing = False
 # from run_tf_unit_test import LogColors, print_color, run_sh_command
@@ -105,7 +91,7 @@
         dest="sut_module",
         type=str,
         nargs="+",
-        default=["tosa_ref_run"],
+        default=["runner.tosa_ref_run"],
         help="System under test module to load (derives from TosaTestRunner).  May be repeated",
     )
     parser.add_argument(