diff --git a/.devcontainer.json b/.devcontainer.json
index 951b7b4bc..d939b02ec 100644
--- a/.devcontainer.json
+++ b/.devcontainer.json
@@ -19,5 +19,6 @@
     "EditorConfig.EditorConfig",
     "paulvarache.vscode-taskfile",
     "stardog-union.vscode-stardog-languages"
-  ]
+  ],
+  "postCreateCommand": "poetry install --all-extras"
 }
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 85171b5bc..98d040bec 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -27,6 +27,6 @@ updates:
     schedule:
       interval: weekly
   - package-ecosystem: pip
-    directory: docker/unstable/
+    directory: devtools/
     schedule:
       interval: weekly
diff --git a/.github/workflows/docker-images.yaml b/.github/workflows/docker-images.yaml
index 743dc5e95..be5e6a9c9 100644
--- a/.github/workflows/docker-images.yaml
+++ b/.github/workflows/docker-images.yaml
@@ -44,6 +44,10 @@ jobs:
         uses: arduino/setup-task@v1
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Python Poetry Action
+        uses: abatilo/actions-poetry@v2.2.0
+        with:
+          poetry-version: 1.3.2
       - name: Build images
         shell: bash
         run: |
@@ -66,6 +70,10 @@ jobs:
         uses: arduino/setup-task@v1
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Python Poetry Action
+        uses: abatilo/actions-poetry@v2.2.0
+        with:
+          poetry-version: 1.3.2
       - name: Login to GitHub Container Registry
         uses: docker/login-action@v2
         with:
diff --git a/.github/workflows/validate.yaml b/.github/workflows/validate.yaml
index b40b77aed..907da03eb 100644
--- a/.github/workflows/validate.yaml
+++ b/.github/workflows/validate.yaml
@@ -8,8 +8,10 @@ on:
 
 env:
   FORCE_COLOR: 1
-  XDG_CACHE_HOME: ${{ github.workspace }}/cache
-  PIP_CACHE_DIR: ${{ github.workspace }}/pip-cache
+  XDG_CACHE_HOME: ${{ github.workspace }}/.var/cache
+  POETRY_CACHE_DIR: ${{ github.workspace }}/.var/cache/pypoetry
+  PIP_CACHE_DIR: ${{ github.workspace }}/.var/cache/pip
+
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -25,11 +27,19 @@ jobs:
       matrix:
         python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
         os: [ubuntu-latest, macos-latest, windows-latest]
+        # This is used for injecting additional tests for a specific python
+        # version and OS.
+        suffix: [""]
         include:
           - python-version: "3.7"
             os: ubuntu-latest
             extensive-tests: true
             TOXENV_SUFFIX: "-docs"
+          - python-version: "3.7"
+            os: ubuntu-latest
+            extensive-tests: true
+            suffix: "-min"
+            TOXENV_SUFFIX: "-min"
           - python-version: "3.8"
             os: ubuntu-latest
             TOX_EXTRA_COMMAND: "- isort --check-only --diff ."
@@ -42,32 +52,32 @@ jobs:
             os: ubuntu-latest
             TOX_EXTRA_COMMAND: "flake8 --exit-zero rdflib"
             TOXENV_SUFFIX: "-docs"
+          - python-version: "3.11"
+            os: ubuntu-latest
+            TOXENV_SUFFIX: "-docs"
     steps:
       - uses: actions/checkout@v3
+      - name: Cache XDG_CACHE_HOME
+        uses: actions/cache@v3
+        with:
+          path: ${{ env.XDG_CACHE_HOME }}
+          key: ${{ github.job }}-xdg-v1-${{ matrix.os }}-${{ matrix.python-version }}-${{ hashFiles('**/pyproject.toml', '**/poetry.lock', '**/with-fuseki.sh', '**/*requirements*.txt') }}
+          restore-keys: |
+            ${{ github.job }}-xdg-v1-${{ matrix.os }}-${{ matrix.python-version }}-
+            ${{ github.job }}-xdg-v1-${{ matrix.os }}-
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
+      - name: Python Poetry Action
+        uses: abatilo/actions-poetry@v2.2.0
+        with:
+          poetry-version: 1.3.2
       - uses: actions/setup-java@v3
         if: ${{ matrix.extensive-tests }}
         with:
           distribution: "temurin"
           java-version: "17"
-      - name: Cache pip
-        uses: actions/cache@v3
-        with:
-          path: ${{ env.PIP_CACHE_DIR }}
-          key: ${{ matrix.os }}-pip-${{ matrix.python-version }}-v1-${{
-            hashFiles('**/setup.py', '**/*requirements*.txt') }}
-          restore-keys: |
-            ${{ matrix.os }}-pip-${{ matrix.python-version }}-v1-
-      - name: Cache xdg
-        uses: actions/cache@v3
-        with:
-          path: ${{ env.XDG_CACHE_HOME }}
-          key: ${{ matrix.os }}-xdg-v1-${{ hashFiles('**/with-fuseki.sh') }}
-          restore-keys: |
-            ${{ matrix.os }}-xdg-v1-
       - name: Install Task
         uses: arduino/setup-task@v1
         with:
@@ -78,24 +88,27 @@ jobs:
           task \
             TOX_EXTRA_COMMAND="${{ matrix.TOX_EXTRA_COMMAND }}" \
             OS=${{ matrix.os }} \
+            MATRIX_SUFFIX=${{ matrix.suffix }} \
             EXTENSIVE=${{ matrix.extensive-tests || 'false' }} \
             TOX_PYTHON_VERSION=${{ matrix.python-version }} \
             TOXENV_SUFFIX=${{ matrix.TOXENV_SUFFIX }} \
-            TOX_JUNIT_XML_PREFIX=${{ matrix.python-version }}-${{ matrix.os }}- \
+            TOX_JUNIT_XML_PREFIX=${{ matrix.python-version }}-${{ matrix.os }}${{matrix.suffix}}- \
             gha:validate
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - uses: actions/upload-artifact@v3
         if: ${{ (success() || failure()) }}
         with:
-          name: ${{ matrix.python-version }}-${{ matrix.os }}-mypy-junit-xml
-          path: test_reports/${{ matrix.python-version }}-${{ matrix.os }}-mypy-junit.xml
+          name: ${{ matrix.python-version }}-${{ matrix.os }}${{matrix.suffix}}-mypy-junit-xml
+          path: test_reports/${{ matrix.python-version }}-${{ matrix.os }}${{matrix.suffix}}-mypy-junit.xml
       - uses: actions/upload-artifact@v3
         if: ${{ (success() || failure()) }}
         with:
-          name: ${{ matrix.python-version }}-${{ matrix.os }}-pytest-junit-xml
-          path: test_reports/${{ matrix.python-version }}-${{ matrix.os }}-pytest-junit.xml
+          name: ${{ matrix.python-version }}-${{ matrix.os }}${{matrix.suffix}}-pytest-junit-xml
+          path: test_reports/${{ matrix.python-version }}-${{ matrix.os }}${{matrix.suffix}}-pytest-junit.xml
   extra-tasks:
+    permissions:
+      contents: read
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
@@ -105,18 +118,22 @@ jobs:
             python-version: 3.8
     steps:
       - uses: actions/checkout@v3
+      - name: Cache XDG_CACHE_HOME
+        uses: actions/cache@v3
+        with:
+          path: ${{ env.XDG_CACHE_HOME }}
+          key: ${{ github.job }}-xdg-v1-${{ matrix.os }}-${{ matrix.python-version }}-${{ hashFiles('**/pyproject.toml', '**/poetry.lock', '**/with-fuseki.sh', '**/*requirements*.txt') }}
+          restore-keys: |
+            ${{ github.job }}-xdg-v1-${{ matrix.os }}-${{ matrix.python-version }}-
+            ${{ github.job }}-xdg-v1-${{ matrix.os }}-
       - name: Set up Python ${{env.DEFAULT_PYTHON}}
         uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
-      - name: Cache pip
-        uses: actions/cache@v3
+      - name: Python Poetry Action
+        uses: abatilo/actions-poetry@v2.2.0
         with:
-          path: ${{ env.PIP_CACHE_DIR }}
-          key: tox-${{ matrix.task }}-pip-v1-${{
-            hashFiles('**/setup.py', '**/requirements*.txt') }}
-          restore-keys: |
-            tox-${{ matrix.task }}-pip-v1-
+          poetry-version: 1.3.2
       - name: Install Task
         uses: arduino/setup-task@v1
         with:
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index f32bad215..b2275bbe3 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -4,6 +4,7 @@ ci:
   autoupdate_schedule: weekly
   autofix_prs: false
 
+# https://pre-commit.com/#adding-pre-commit-plugins-to-your-project
 repos:
   - repo: https://github.com/pycqa/isort
     rev: 5.11.4
@@ -15,7 +16,7 @@ repos:
       require_serial: true
       args: ["."]
   - repo: https://github.com/psf/black
-    # WARNING: version should be the same as in `pyproject.toml` and `requirements.dev.txt`.
+    # WARNING: version should be the same as in `pyproject.toml`
     # Using git ref spec because of https://github.com/psf/black/issues/2493
     rev: 'refs/tags/22.12.0:refs/tags/22.12.0'
     hooks:
@@ -23,3 +24,10 @@ repos:
       pass_filenames: false
       require_serial: true
       args: ["."]
+  - repo: https://github.com/python-poetry/poetry
+    rev: 1.3.2
+    hooks:
+    - id: poetry-check
+    - id: poetry-lock
+      # sadly `--no-update` does not work on pre-commit.ci
+      args: ["--check"]
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 648f8ed48..274b3ad69 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -15,13 +15,20 @@ build:
     # Using 3.9 as earlier versions have trouble generating documentation for
     # `@typing.overload`` with type aliases.
     python: "3.9"
+  jobs:
+    post_create_environment:
+    # Using requirements-poetry.in as requirements-poetry.txt has conflicts with
+    # the readthedocs environment.
+    - pip install -r devtools/requirements-poetry.in
+    post_install:
+    - poetry config virtualenvs.create false
+    - poetry install --only=main --only=docs --extras=html
+    - poetry env info
+    # This will patch Sphinx to a later version than is in poetry.lock so that
+    # we build with a more up to date Sphinx. This should be eliminated when
+    # possible in favor of having a more up to date Sphinx in poetry.lock.
+    - pip install -r devtools/requirements-rtd.txt
 
-python:
-  install:
-    - method: pip
-      path: .
-      extra_requirements:
-        - docs
 
 sphinx:
   fail_on_warning: true
diff --git a/.var/.gitignore b/.var/.gitignore
new file mode 100644
index 000000000..d6b7ef32c
--- /dev/null
+++ b/.var/.gitignore
@@ -0,0 +1,2 @@
+*
+!.gitignore
diff --git a/Dockerfile.devcontainer b/Dockerfile.devcontainer
index 0449df116..07ce3ca3d 100644
--- a/Dockerfile.devcontainer
+++ b/Dockerfile.devcontainer
@@ -41,17 +41,14 @@ RUN \
 
 RUN sh -c "$(curl --location https://taskfile.dev/install.sh)" -- -d -b /usr/local/bin
 
-COPY requirements*.txt /var/tmp/
-COPY docs/sphinx-requirements.txt /var/tmp/docs/sphinx-requirements.txt
+COPY devtools/requirements-poetry.in /var/tmp/
 
 RUN \
-    cd /var/tmp/ && \
-    grep -H . requirements*.txt docs/sphinx-requirements.txt && \
     python -m pip install --upgrade \
-        -r requirements.txt \
-        -r requirements.dev.txt \
-        -r requirements.dev-extra.txt \
-        -r docs/sphinx-requirements.txt \
         tox \
+        pre-commit \
+        -r /var/tmp/requirements-poetry.in \
         && \
     true
+
+RUN git config --system --add safe.directory /srv/workspace
diff --git a/README.md b/README.md
index 72d385dfe..605998318 100644
--- a/README.md
+++ b/README.md
@@ -75,7 +75,7 @@ or
 
 or from your locally cloned repository you can install it with one of the following options:
 
-    $ python setup.py install
+    $ poetry install  # installs into a poetry-managed venv
 
 or
 
@@ -182,21 +182,22 @@ Multiple other projects are contained within the RDFlib "family", see <https://g
 
 Run the test suite with `pytest`.
 ```shell
-pytest
+poetry install
+poetry run pytest
 ```
 
 ### Running test coverage on the host with coverage report
 
 Run the test suite and generate a HTML coverage report with `pytest` and `pytest-cov`.
 ```shell
-pytest --cov
+poetry run pytest --cov
 ```
 
 ### Viewing test coverage
 
 Once tests have produced HTML output of the coverage report, view it by running:
 ```shell
-pytest --cov --cov-report term --cov-report html
+poetry run pytest --cov --cov-report term --cov-report html
 python -m http.server --directory=htmlcov
 ```
 
diff --git a/Taskfile.yml b/Taskfile.yml
index f20a9148d..9ee289348 100644
--- a/Taskfile.yml
+++ b/Taskfile.yml
@@ -6,23 +6,19 @@ version: "3"
 vars:
   TASKFILE_DIR:
     sh: pwd
-  # The path to the virtual environment to use when using a virtual
-  # environment.
-  VENV_PATH: '{{(env "VENV_PATH") | default (osClean (print .TASKFILE_DIR "/.venv"))}}'
-  # Non empty string results in tasks using a virtual environment.
-  WITH_VENV: '{{env "WITH_VENV" | default "false"}}'
-  # The virtual environemtn specific python interpreter to use.
-  VENV_BINPREFIX: '{{if (mustFromJson .WITH_VENV)}}{{if (eq OS "windows")}}{{.VENV_PATH}}/Scripts/{{else}}{{.VENV_PATH}}/bin/{{end}}{{end}}'
-  VENV_PYTHON: '{{if (eq OS "windows")}}{{.VENV_BINPREFIX}}python.exe{{else}}{{.VENV_BINPREFIX}}python{{end}}'
-  # The python interpreter to use.
+  POETRY: poetry
+  # The prefix to use when running dev commands
+  RUN_PREFIX: "{{.POETRY}} run"
+  # The python to use for running in the venv
+  VENV_PYTHON: "{{.RUN_PREFIX}} python"
+    # The python interpreter to use.
   PYTHON: python
-  _PYTHON: "{{if (mustFromJson .WITH_VENV)}}{{.VENV_PYTHON}}{{else}}{{.PYTHON}}{{end}}"
   # Truthish values ("true", "1", etc.) results in java being installed as a
   # system dependency.
   INSTALL_SYSTEM_DEPS_JAVA: "false"
   # Truthish values ("true", "1", etc.) results in extras being installed with
   # pip.
-  INSTALL_PIP_EXTRAS: "false"
+  INSTALL_EXTRAS: "false"
   # Truthish values ("true", "1", etc.) results in extensive tests being ran and
   # dependencies for extensive tests being installed.
   EXTENSIVE: "false"
@@ -61,58 +57,40 @@ tasks:
   install:tox:
     desc: Install tox
     cmds:
-      - "{{._PYTHON | shellQuote}} -m pip install tox {{if (mustFromJson .WITH_GITHUB_ACTIONS)}}tox-gh-actions{{end}}"
+      - "{{.PYTHON}} -m pip install tox {{if (mustFromJson .WITH_GITHUB_ACTIONS)}}tox-gh-actions{{end}}"
 
-  install:pip-deps:
-    desc: Install pip dependencies
+  poetry:configure:
+    desc: Configure the environment for development with poetry
     cmds:
-      - "{{._PYTHON | shellQuote}} -m pip install --upgrade -r requirements.txt -r requirements.dev.txt -r docs/sphinx-requirements.txt {{if (mustFromJson .INSTALL_PIP_EXTRAS)}}-r requirements.dev-extra.txt{{end}}"
-
-  install:flake8:
-    desc: Install flake8 dependencies
-    cmds:
-      - "{{._PYTHON | shellQuote}} -m pip install --upgrade -r requirements.flake8.txt"
-
-  install:deps:
-    desc: Install all dependencies
-    cmds:
-      - task: install:system-deps
-      - task: install:tox
-      - task: install:pip-deps
+      - |
+        {{if .POETRY_PYTHON}} {{.POETRY}} env use {{.POETRY_PYTHON}} {{end}}
+        {{.POETRY}} install {{if (or (mustFromJson .INSTALL_EXTRAS) (mustFromJson .EXTENSIVE))}} --all-extras{{end}} {{.CLI_ARGS}}
 
-  venv:create:
-    desc: Create a venv to VENV_PATH(={{.VENV_PATH}})
+  configure:
+    desc: Configure the environment for development
     cmds:
-      - "{{.PYTHON | shellQuote}} -m venv {{.VENV_PATH}}"
+      - task: venv:install
 
   venv:install:
-    desc: Create and install a venv to VENV_PATH(={{.VENV_PATH}})
+    desc: Create and install a venv
     cmds:
-      - task: venv:create
-      - task: install:pip-deps
-        vars: { _PYTHON: "{{.VENV_PYTHON}}" }
+      - task: poetry:configure
 
   venv:clean:
-    desc: Remove the venv at VENV_PATH(={{.VENV_PATH}})
+    desc: Clean the virtual environment
     cmds:
-      - task: _rimraf
-        vars: { _PYTHON: "{{.PYTHON}}", RIMRAF_TARGET: "{{.VENV_PATH}}" }
+      - "{{.POETRY}} env remove --all {{.CLI_ARGS}}"
 
   venv:run:
     desc: Run a command inside the venv
     cmds:
       - cmd: |
-          VIRTUAL_ENV="{{.VENV_PATH}}" PATH="{{.VENV_PATH}}/bin${PATH:+:${PATH}}" {{.CLI_ARGS}}
+          {{.RUN_PREFIX}} {{.CLI_ARGS}}
 
   run:
     desc: Run a command. If WITH_VENV is truthish, the command will be run inside the virtual environment.
     cmds:
-      - cmd: |
-          {{if (mustFromJson .WITH_VENV)}}
-          VIRTUAL_ENV="{{.VENV_PATH}}" PATH="{{.VENV_PATH}}/bin${PATH:+:${PATH}}" {{.CLI_ARGS}}
-          {{else}}
-          {{.CLI_ARGS}}
-          {{end}}
+      - task: venv:run
 
   tox:
     desc: Run tox
@@ -124,7 +102,7 @@ tasks:
         {{if .TOX_JUNIT_XML_PREFIX}}TOX_JUNIT_XML_PREFIX={{shellQuote .TOX_JUNIT_XML_PREFIX}}{{end}} \
         {{if .COVERAGE_FILE}}COVERAGE_FILE={{shellQuote .COVERAGE_FILE}}{{end}} \
         {{.TEST_HARNESS}} \
-        {{._PYTHON | shellQuote}} \
+        {{.PYTHON | shellQuote}} \
           -m tox \
           {{.CLI_ARGS}}
     env:
@@ -132,30 +110,30 @@ tasks:
   test:
     desc: Run tests
     cmds:
-      - '{{.TEST_HARNESS}}{{print .VENV_BINPREFIX "pytest" | shellQuote}} {{if (mustFromJson .WITH_COVERAGE)}}--cov --cov-report={{end}} {{.CLI_ARGS}}'
+      - '{{.TEST_HARNESS}}{{.RUN_PREFIX}} pytest {{if (mustFromJson .WITH_COVERAGE)}}--cov --cov-report={{end}} {{.CLI_ARGS}}'
   flake8:
     desc: Run flake8
     cmds:
       - |
-        if {{._PYTHON | shellQuote}} -c 'import importlib; exit(0 if importlib.util.find_spec("flakeheaven") is not None else 1)'
+        if {{.VENV_PYTHON}} -c 'import importlib.util; exit(0 if importlib.util.find_spec("flakeheaven") is not None else 1)'
         then
           1>&2 echo "running flakeheaven"
-          {{._PYTHON | shellQuote}} -m flakeheaven lint {{.CLI_ARGS}}
+          {{.VENV_PYTHON}} -m flakeheaven lint {{.CLI_ARGS}}
         else
           1>&2 echo "skipping flakeheaven as it is not installed, likely because python version is older than 3.8"
         fi
   black:
     desc: Run black
     cmds:
-      - '{{._PYTHON | shellQuote}} -m black {{if (mustFromJson (.CHECK | default "false"))}}--check --diff {{end}}{{.CLI_ARGS | default "."}}'
+      - '{{.VENV_PYTHON}} -m black {{if (mustFromJson (.CHECK | default "false"))}}--check --diff {{end}}{{.CLI_ARGS | default "."}}'
   isort:
     desc: Run isort
     cmds:
-      - '{{._PYTHON | shellQuote}} -m isort {{if (mustFromJson (.CHECK | default "false"))}}--check --diff {{end}}{{.CLI_ARGS | default "."}}'
+      - '{{.VENV_PYTHON}} -m isort {{if (mustFromJson (.CHECK | default "false"))}}--check --diff {{end}}{{.CLI_ARGS | default "."}}'
   mypy:
     desc: Run mypy
     cmds:
-      - "{{._PYTHON | shellQuote}} -m mypy --show-error-context --show-error-codes {{.CLI_ARGS}}"
+      - "{{.VENV_PYTHON}} -m mypy --show-error-context --show-error-codes {{.CLI_ARGS}}"
 
   lint:fix:
     desc: Fix auto-fixable linting errors
@@ -199,7 +177,7 @@ tasks:
     desc: Build documentation
     cmds:
       - echo "PYTHONPATH=${PYTHONPATH}"
-      - "{{._PYTHON | shellQuote}} -m sphinx.cmd.build -b html -d docs/_build/doctrees docs/ docs/_build/html -W {{.CLI_ARGS}}"
+      - "{{.VENV_PYTHON}} -m sphinx.cmd.build -T -W -b html -d docs/_build/doctree docs docs/_build/html {{.CLI_ARGS}}"
 
   docs:live-server:
     desc: Run a live server on generated docs
@@ -238,11 +216,13 @@ tasks:
       - task: clean:tox
       - task: clean:mypy
       - task: venv:clean
+      - task: _rimraf
+        vars: { RIMRAF_TARGET: ".var/devcontainer" }
 
   test:data:fetch:
     desc: Fetch test data.
     cmds:
-      - "{{._PYTHON}} test/data/fetcher.py {{.CLI_ARGS}}"
+      - "{{.VENV_PYTHON}} test/data/fetcher.py {{.CLI_ARGS}}"
 
   pre-commit:install:
     desc: Install pre-commit hooks
@@ -263,14 +243,14 @@ tasks:
     desc: GitHub Actions Validation Workflow
     env:
       COVERALLS_PARALLEL: true
-      COVERALLS_FLAG_NAME: "{{.OS}}-{{.TOX_PYTHON_VERSION}}"
+      COVERALLS_FLAG_NAME: "{{.OS}}-{{.TOX_PYTHON_VERSION}}{{.MATRIX_SUFFIX}}"
       COVERALLS_SERVICE_NAME: '{{.COVERALLS_SERVICE_NAME | default (env "COVERALLS_SERVICE_NAME") | default "github"}}'
     cmds:
       - task: install:system-deps
       - task: install:tox
         vars:
           WITH_GITHUB_ACTIONS: true
-      - cmd: "{{._PYTHON | shellQuote}} -m pip install coveralls"
+      - cmd: "{{.PYTHON}} -m pip install coveralls"
       - task: tox
         vars:
           COVERAGE_FILE: ".coverage"
@@ -279,22 +259,22 @@ tasks:
   gha:flake8:
     desc: GitHub Actions flake8 workflow
     cmds:
-      - task: install:flake8
+      - task: poetry:configure
+        vars:
+          CLI_ARGS: --no-root --only=flake8
       - task: flake8
 
   cmd:rdfpipe:
     desc: Run rdfpipe
     cmds:
-      - cmd: "{{._PYTHON | shellQuote}} -m rdflib.tools.rdfpipe {{.CLI_ARGS}}"
+      - cmd: "{{.VENV_PYTHON}} -m rdflib.tools.rdfpipe {{.CLI_ARGS}}"
 
   pip-compile:
     cmds:
-      - cmd: "{{.PIP_COMPILE}} --quiet --annotate --emit-options {{.CLI_ARGS}}"
+      - cmd: "{{.PIP_COMPILE}} --quiet --annotate --emit-options --resolver=backtracking {{.CLI_ARGS}}"
+
   docker:prepare:
     cmds:
-      - task: pip-compile
-        vars:
-          { CLI_ARGS: "-o docker/unstable/requirements.txt requirements.txt" }
       - task: pip-compile
         vars: { CLI_ARGS: "docker/latest/requirements.in" }
   docker:unstable:
@@ -305,7 +285,8 @@ tasks:
           {{.DOCKER}} image pull {{.OCI_REFERENCE}}:unstable || :
 
           set -eo pipefail
-
+          mkdir -vp var
+          {{.POETRY}} export -o var/requirements.txt
           pipx run --spec=build build --wheel
           {{.DOCKER}} buildx build \
             --cache-to=type=inline \
@@ -354,7 +335,7 @@ tasks:
     # a python interpreter. The name is inspired by
     # <https://www.npmjs.com/package/rimraf>.
     - cmd: |
-        {{._PYTHON | shellQuote}} -c '
+        {{.PYTHON}} -c '
         from pathlib import Path;
         import sys, shutil;
         for path in sys.argv[1:]:
diff --git a/devtools/README.md b/devtools/README.md
new file mode 100644
index 000000000..ff85d11d9
--- /dev/null
+++ b/devtools/README.md
@@ -0,0 +1,3 @@
+# devtools
+
+This directory contains development related scripts and files.
diff --git a/devtools/constraints-min.txt b/devtools/constraints-min.txt
new file mode 100644
index 000000000..7779da3fb
--- /dev/null
+++ b/devtools/constraints-min.txt
@@ -0,0 +1,9 @@
+# This file selects minimum versions to ensure that the test suite passes on
+# these versions.
+isodate==0.6.0
+pyparsing==2.1.0
+importlib-metadata==4.0.0
+berkeleydb==18.1.2
+networkx==2.0
+html5lib==1.0.1
+lxml==4.3.0
diff --git a/devtools/requirements-poetry.in b/devtools/requirements-poetry.in
new file mode 100644
index 000000000..6381ff804
--- /dev/null
+++ b/devtools/requirements-poetry.in
@@ -0,0 +1,3 @@
+# Fixing this here as readthedocs can't use the compiled requirements-poetry.txt
+# due to conflicts.
+poetry==1.3.2
diff --git a/devtools/requirements-rtd.txt b/devtools/requirements-rtd.txt
new file mode 100644
index 000000000..32af55fb5
--- /dev/null
+++ b/devtools/requirements-rtd.txt
@@ -0,0 +1,5 @@
+# This file contains requirements that get patched into readthedocs so that we
+# can build with a more up to date Sphinx than is in `poetry.lock`. This file
+# should be eliminated once we can get a more up-to-date version of sphinx in
+# poetry.lock. It is kept here so that dependabot can update it.
+Sphinx==5.3.0
diff --git a/docker-compose.yml b/docker-compose.yml
index efe637000..c8c19e0d0 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -6,22 +6,33 @@ services:
       context: .
       dockerfile: Dockerfile.devcontainer
     working_dir: /srv/workspace
+    environment:
+      - XDG_CACHE_HOME=/srv/workspace/.var/devcontainer/cache
+      - MYPY_CACHE_DIR=/srv/workspace/.var/devcontainer/mypy_cache
+      - TOX_WORK_DIR=/srv/workspace/.var/devcontainer/tox
+      - PYTEST_ADDOPTS=-o cache_dir=/srv/workspace/.var/devcontainer/pytest_cache
+      - PRE_COMMIT_HOME=/srv/workspace/.var/devcontainer/pre-commit
     volumes:
       - .:/srv/workspace:z,cached
-      - xdg-cache-home:/root/.cache
-      - dot-venv:/srv/workspace/.venv
-      - dot-tox:/srv/workspace/.tox
-      - dot-mypy-cache:/srv/workspace/.mypy_cache
-      - dot-pytest-cache:/srv/workspace/.pytest_cache
     command:
      - /bin/sh
      - -c
      - |
        echo Waiting for shutdown... override the command if this is not what you want. 1>&2
        while sleep 1000; do :; done
+  run:
+    build:
+      context: .
+      dockerfile: Dockerfile.devcontainer
+    working_dir: /srv/workspace
+    environment:
+      - XDG_CACHE_HOME=/srv/workspace-var/cache
+      - MYPY_CACHE_DIR=/srv/workspace-var/mypy_cache
+      - TOX_WORK_DIR=/srv/workspace-var/tox
+      - PYTEST_ADDOPTS=-o cache_dir=/srv/workspace-var/pytest_cache
+      - PRE_COMMIT_HOME=/srv/workspace-var/pre-commit
+    volumes:
+      - .:/srv/workspace:z,cached
+      - workspace-var:/srv/workspace-var
 volumes:
-    xdg-cache-home: {}
-    dot-venv: {}
-    dot-tox: {}
-    dot-mypy-cache: {}
-    dot-pytest-cache: {}
+    workspace-var: {}
diff --git a/docker/latest/requirements.in b/docker/latest/requirements.in
index c704360aa..5bf1d95c2 100644
--- a/docker/latest/requirements.in
+++ b/docker/latest/requirements.in
@@ -1,2 +1,4 @@
+# This file is used for building a docker image of hte latest rdflib release. It
+# will be updated by dependabot when new releases are made.
 rdflib==6.2.0
 html5lib
diff --git a/docker/latest/requirements.txt b/docker/latest/requirements.txt
index 541b75803..b038fa6a4 100644
--- a/docker/latest/requirements.txt
+++ b/docker/latest/requirements.txt
@@ -1,22 +1,23 @@
 #
-# This file is autogenerated by pip-compile with python 3.10
-# To update, run:
+# This file is autogenerated by pip-compile with Python 3.11
+# by the following command:
 #
-#    pip-compile docker/latest/requirements.in
+#    pip-compile --resolver=backtracking ./docker/latest/requirements.in
 #
 html5lib==1.1
-    # via -r docker/latest/requirements.in
+    # via -r ./docker/latest/requirements.in
 isodate==0.6.1
     # via rdflib
 pyparsing==3.0.9
     # via rdflib
 rdflib==6.2.0
-    # via -r docker/latest/requirements.in
+    # via -r ./docker/latest/requirements.in
 six==1.16.0
-    # via html5lib
+    # via
+    #   html5lib
+    #   isodate
 webencodings==0.5.1
     # via html5lib
 
 # The following packages are considered to be unsafe in a requirements file:
 # setuptools
-
diff --git a/docker/unstable/Dockerfile b/docker/unstable/Dockerfile
index 0d71c6a0b..2a4c2a92a 100644
--- a/docker/unstable/Dockerfile
+++ b/docker/unstable/Dockerfile
@@ -1,6 +1,7 @@
 FROM docker.io/library/python:3.11.1-slim@sha256:8f3997244336ad0f067ad693f85906263a21a7f571b6577a64134aba889bc95e
 
-COPY docker/unstable/requirements.txt /var/tmp/build/
+# This file is generated from docker:unstable in Taskfile.yml
+COPY var/requirements.txt /var/tmp/build/
 
 RUN \
     pip install -r /var/tmp/build/requirements.txt
diff --git a/docker/unstable/requirements.txt b/docker/unstable/requirements.txt
deleted file mode 100644
index 529eead70..000000000
--- a/docker/unstable/requirements.txt
+++ /dev/null
@@ -1,19 +0,0 @@
-#
-# This file is autogenerated by pip-compile with python 3.10
-# To update, run:
-#
-#    pip-compile --output-file=docker/unstable/requirements.txt requirements.txt
-#
-html5lib==1.1
-    # via -r requirements.txt
-isodate==0.6.1
-    # via -r requirements.txt
-pyparsing==3.0.9
-    # via -r requirements.txt
-six==1.16.0
-    # via
-    #   html5lib
-    #   isodate
-webencodings==0.5.1
-    # via html5lib
-
diff --git a/docs/conf.py b/docs/conf.py
index 13bc511fe..050364f64 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -10,11 +10,17 @@
 #
 # All configuration values have a default; values that are commented out
 # serve to show the default.
+# https://www.sphinx-doc.org/en/master/usage/configuration.html
 
+import logging
 import os
 import re
 import sys
 
+import sphinx
+
+import rdflib
+
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
@@ -82,6 +88,8 @@
 
 # Find version. We have to do this because we can't import it in Python 3 until
 # its been automatically converted in the setup process.
+# UPDATE: This function is no longer used; once builds are confirmed to succeed, it
+#         can/should be removed. --JCL 2022-12-30
 def find_version(filename):
     _version_re = re.compile(r'__version__ = "(.*)"')
     for line in open(filename):
@@ -91,7 +99,7 @@ def find_version(filename):
 
 
 # The full version, including alpha/beta/rc tags.
-release = find_version("../rdflib/__init__.py")
+release = rdflib.__version__
 # The short X.Y version.
 version = re.sub("[0-9]+\\.[0-9]\\..*", "\1", release)
 
@@ -258,8 +266,18 @@ def find_version(filename):
     "ref.python",
 ]
 
+sphinx_version = tuple(int(part) for part in sphinx.__version__.split("."))
+
+
 nitpicky = True
 
+if sphinx_version < (5,):
+    # Being nitpicky on Sphinx 4.x causes lots of problems.
+    logging.warning(
+        "disabling nitpicky because sphinx is too old: %s", sphinx.__version__
+    )
+    nitpicky = False
+
 nitpick_ignore = [
     ("py:data", "typing.Literal"),
     ("py:class", "typing.IO[bytes]"),
@@ -306,10 +324,3 @@ def find_version(filename):
             ("py:class", "TextIO"),
         ]
     )
-
-if sys.version_info < (3, 8):
-    nitpick_ignore.extend(
-        [
-            ("py:class", "importlib_metadata.EntryPoint"),
-        ]
-    )
diff --git a/docs/developers.rst b/docs/developers.rst
index 0959824af..89fedb339 100644
--- a/docs/developers.rst
+++ b/docs/developers.rst
@@ -14,6 +14,7 @@ developing RDFLib code.
 * Code should also pass `flake8 <https://flake8.pycqa.org/en/latest/>`_ linting
   and `mypy <http://mypy-lang.org/>`_ type checking.
 * You must supply tests for new code.
+* RDFLib uses `Poetry <https://python-poetry.org/docs/master/>`_ for dependency management and packaging.
 
 If you add a new cool feature, consider also adding an example in ``./examples``
 
@@ -95,25 +96,24 @@ To run RDFLib's test suite with `pytest <https://docs.pytest.org/en/latest/>`_:
 
 .. code-block:: console
 
-   $ pip install -r requirements.txt -r requirements.dev.txt
-   $ pytest
+   $ poetry install
+   $ poetry run pytest
 
 Specific tests can be run by file name. For example:
 
 .. code-block:: console
 
-  $ pytest test/test_graph.py
+  $ poetry run pytest test/test_graph/test_graph.py
 
 For more extensive tests, including tests for the `berkleydb
 <https://www.oracle.com/database/technologies/related/berkeleydb.html>`_
-backend, install the requirements from ``requirements.dev-extra.txt`` before
+backend, install extra requirements before
 executing the tests.
 
 .. code-block:: console
 
-   $ pip install -r requirements.txt -r requirements.dev.txt
-   $ pip install -r requirements.dev-extra.txt
-   $ pytest
+   $ poetry install --all-extras
+   $ poetry run pytest
 
 Writing tests
 ~~~~~~~~~~~~~
@@ -143,13 +143,13 @@ our black.toml config file:
 
 .. code-block:: bash
 
-    python -m black --config black.toml --check ./rdflib
+    poetry run black .
 
 Check style and conventions with `flake8 <https://flake8.pycqa.org/en/latest/>`_:
 
 .. code-block:: bash
 
-    python -m flake8 rdflib
+    poetry run flake8 rdflib
 
 We also provide a `flakeheaven <https://pypi.org/project/flakeheaven/>`_
 baseline that ignores existing flake8 errors and only reports on newly
@@ -157,14 +157,14 @@ introduced flake8 errors:
 
 .. code-block:: bash
 
-    python -m flakeheaven
+    poetry run flakeheaven
 
 
 Check types with `mypy <http://mypy-lang.org/>`_:
 
 .. code-block:: bash
 
-    python -m mypy --show-error-context --show-error-codes rdflib
+    poetry run mypy --show-error-context --show-error-codes
 
 pre-commit and pre-commit ci
 ----------------------------
@@ -252,21 +252,14 @@ Some useful commands for working with the task in the taskfile is given below:
     # List available tasks.
     task -l
 
-    # Install pip dependencies
-    task install:pip-deps
+    # Configure the environment for development
+    task configure
 
     # Run basic validation
     task validate
 
-    # Install a venv and run validation inside venv
-    task venv:install
-    task WITH_VENV=1 validate
-
-    # Fix all auto-fixable validation errors (i.e. run black and isort) using venv
-    task WITH_VENV=1 validate:fix
-
-    # Build docs inside venv
-    task WITH_VENV=1 docs:build
+    # Build docs
+    task docs:build
 
     # Run live-preview on the docs
     task docs:live-server
@@ -303,14 +296,17 @@ To use the development container directly:
     # Build the devcontainer docker image.
     docker-compose build
 
+    # Configure the system for development.
+    docker-compose run --rm run task configure
+
     # Run the validate task inside the devtools container.
-    docker-compose run --rm devcontainer task validate
+    docker-compose run --rm run task validate
 
     # Run extensive tests inside the devtools container.
-    docker-compose run --rm devcontainer task EXTENSIVE=true test
+    docker-compose run --rm run task EXTENSIVE=true test
 
     # To get a shell into the devcontainer docker image.
-    docker-compose run --rm devcontainer bash
+    docker-compose run --rm run bash
 
 The devcontainer also works with `Podman Compose
 <https://github.com/containers/podman-compose>`_.
diff --git a/docs/docs.rst b/docs/docs.rst
index b42da9d2e..5ff917755 100644
--- a/docs/docs.rst
+++ b/docs/docs.rst
@@ -16,25 +16,18 @@ for the Shinx documentation about these fields.
 Building
 --------
 
-To build you must have the ``sphinx`` and some additional package installed. 
-The full set of requirements is listed in the ``sphinx-requirements.txt`` file 
-within the :file:`docs/` directory.
-
-To install the requirements for building documentation run:
+To build the documentation you can use Sphinx from within the poetry environment. To do this, run the following commands:
 
 .. code-block:: bash
 
-  pip install -r docs/sphinx-requirements.txt
-
+    # Install poetry venv
+    poetry install
 
-Once you have all the requirements installed you can run this command in the 
-rdflib root directory:
-
-.. code-block:: bash
+    # Build the sphinx docs
+    poetry run sphinx-build -b html -d docs/_build/doctrees docs docs/_build/html
 
-  python setup.py build_sphinx
 
-Docs will be generated in :file:`build/sphinx/html/` and API documentation, 
+Docs will be generated in :file:`docs/_build/html` and API documentation, 
 generated from doc-strings, will be placed in :file:`docs/apidocs/`.
 
 There is also a `tox <https://tox.wiki/en/latest/>`_ environment for building 
@@ -51,7 +44,7 @@ API Docs are automatically generated with ``sphinx-apidoc``:
 
 .. code-block:: bash
 
-   sphinx-apidoc -f -d 10 -o docs/apidocs/ rdflib examples
+   poetry run sphinx-apidoc -f -d 10 -o docs/apidocs/ rdflib examples
 
 Note that ``rdflib.rst`` was manually tweaked so as to not include all
  imports in ``rdflib/__init__.py``.
diff --git a/docs/sphinx-requirements.txt b/docs/sphinx-requirements.txt
deleted file mode 100644
index 9362dd8e9..000000000
--- a/docs/sphinx-requirements.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-git+https://github.com/gniezen/n3pygments.git
-myst-parser
-sphinx>=5,<6
-sphinxcontrib-apidoc
-sphinxcontrib-kroki
-sphinx-autodoc-typehints
diff --git a/poetry.lock b/poetry.lock
new file mode 100644
index 000000000..cbe7c5faf
--- /dev/null
+++ b/poetry.lock
@@ -0,0 +1,1416 @@
+# This file is automatically @generated by Poetry and should not be changed by hand.
+
+[[package]]
+name = "alabaster"
+version = "0.7.12"
+description = "A configurable sidebar-enabled Sphinx theme"
+category = "dev"
+optional = false
+python-versions = "*"
+files = [
+    {file = "alabaster-0.7.12-py2.py3-none-any.whl", hash = "sha256:446438bdcca0e05bd45ea2de1668c1d9b032e1a9154c2c259092d77031ddd359"},
+    {file = "alabaster-0.7.12.tar.gz", hash = "sha256:a661d72d58e6ea8a57f7a86e37d86716863ee5e92788398526d58b26a4e4dc02"},
+]
+
+[[package]]
+name = "attrs"
+version = "22.2.0"
+description = "Classes Without Boilerplate"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+files = [
+    {file = "attrs-22.2.0-py3-none-any.whl", hash = "sha256:29e95c7f6778868dbd49170f98f8818f78f3dc5e0e37c0b1f474e3561b240836"},
+    {file = "attrs-22.2.0.tar.gz", hash = "sha256:c9227bfc2f01993c03f68db37d1d15c9690188323c067c641f1a35ca58185f99"},
+]
+
+[package.extras]
+cov = ["attrs[tests]", "coverage-enable-subprocess", "coverage[toml] (>=5.3)"]
+dev = ["attrs[docs,tests]"]
+docs = ["furo", "myst-parser", "sphinx", "sphinx-notfound-page", "sphinxcontrib-towncrier", "towncrier", "zope.interface"]
+tests = ["attrs[tests-no-zope]", "zope.interface"]
+tests-no-zope = ["cloudpickle", "cloudpickle", "hypothesis", "hypothesis", "mypy (>=0.971,<0.990)", "mypy (>=0.971,<0.990)", "pympler", "pympler", "pytest (>=4.3.0)", "pytest (>=4.3.0)", "pytest-mypy-plugins", "pytest-mypy-plugins", "pytest-xdist[psutil]", "pytest-xdist[psutil]"]
+
+[[package]]
+name = "babel"
+version = "2.11.0"
+description = "Internationalization utilities"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+files = [
+    {file = "Babel-2.11.0-py3-none-any.whl", hash = "sha256:1ad3eca1c885218f6dce2ab67291178944f810a10a9b5f3cb8382a5a232b64fe"},
+    {file = "Babel-2.11.0.tar.gz", hash = "sha256:5ef4b3226b0180dedded4229651c8b0e1a3a6a2837d45a073272f313e4cf97f6"},
+]
+
+[package.dependencies]
+pytz = ">=2015.7"
+
+[[package]]
+name = "berkeleydb"
+version = "18.1.5"
+description = "Python bindings for Oracle Berkeley DB"
+category = "main"
+optional = true
+python-versions = "*"
+files = [
+    {file = "berkeleydb-18.1.5.tar.gz", hash = "sha256:d8c2efbca9472f8848b13cce4f4904a5ea1e1540ee576e626a1491817832a50a"},
+]
+
+[[package]]
+name = "black"
+version = "22.12.0"
+description = "The uncompromising code formatter."
+category = "dev"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "black-22.12.0-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:9eedd20838bd5d75b80c9f5487dbcb06836a43833a37846cf1d8c1cc01cef59d"},
+    {file = "black-22.12.0-cp310-cp310-win_amd64.whl", hash = "sha256:159a46a4947f73387b4d83e87ea006dbb2337eab6c879620a3ba52699b1f4351"},
+    {file = "black-22.12.0-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:d30b212bffeb1e252b31dd269dfae69dd17e06d92b87ad26e23890f3efea366f"},
+    {file = "black-22.12.0-cp311-cp311-win_amd64.whl", hash = "sha256:7412e75863aa5c5411886804678b7d083c7c28421210180d67dfd8cf1221e1f4"},
+    {file = "black-22.12.0-cp37-cp37m-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:c116eed0efb9ff870ded8b62fe9f28dd61ef6e9ddd28d83d7d264a38417dcee2"},
+    {file = "black-22.12.0-cp37-cp37m-win_amd64.whl", hash = "sha256:1f58cbe16dfe8c12b7434e50ff889fa479072096d79f0a7f25e4ab8e94cd8350"},
+    {file = "black-22.12.0-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:77d86c9f3db9b1bf6761244bc0b3572a546f5fe37917a044e02f3166d5aafa7d"},
+    {file = "black-22.12.0-cp38-cp38-win_amd64.whl", hash = "sha256:82d9fe8fee3401e02e79767016b4907820a7dc28d70d137eb397b92ef3cc5bfc"},
+    {file = "black-22.12.0-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:101c69b23df9b44247bd88e1d7e90154336ac4992502d4197bdac35dd7ee3320"},
+    {file = "black-22.12.0-cp39-cp39-win_amd64.whl", hash = "sha256:559c7a1ba9a006226f09e4916060982fd27334ae1998e7a38b3f33a37f7a2148"},
+    {file = "black-22.12.0-py3-none-any.whl", hash = "sha256:436cc9167dd28040ad90d3b404aec22cedf24a6e4d7de221bec2730ec0c97bcf"},
+    {file = "black-22.12.0.tar.gz", hash = "sha256:229351e5a18ca30f447bf724d007f890f97e13af070bb6ad4c0a441cd7596a2f"},
+]
+
+[package.dependencies]
+click = ">=8.0.0"
+mypy-extensions = ">=0.4.3"
+pathspec = ">=0.9.0"
+platformdirs = ">=2"
+tomli = {version = ">=1.1.0", markers = "python_full_version < \"3.11.0a7\""}
+typed-ast = {version = ">=1.4.2", markers = "python_version < \"3.8\" and implementation_name == \"cpython\""}
+typing-extensions = {version = ">=3.10.0.0", markers = "python_version < \"3.10\""}
+
+[package.extras]
+colorama = ["colorama (>=0.4.3)"]
+d = ["aiohttp (>=3.7.4)"]
+jupyter = ["ipython (>=7.8.0)", "tokenize-rt (>=3.2.0)"]
+uvloop = ["uvloop (>=0.15.2)"]
+
+[[package]]
+name = "certifi"
+version = "2022.12.7"
+description = "Python package for providing Mozilla's CA Bundle."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+files = [
+    {file = "certifi-2022.12.7-py3-none-any.whl", hash = "sha256:4ad3232f5e926d6718ec31cfc1fcadfde020920e278684144551c91769c7bc18"},
+    {file = "certifi-2022.12.7.tar.gz", hash = "sha256:35824b4c3a97115964b408844d64aa14db1cc518f6562e8d7261699d1350a9e3"},
+]
+
+[[package]]
+name = "charset-normalizer"
+version = "2.1.1"
+description = "The Real First Universal Charset Detector. Open, modern and actively maintained alternative to Chardet."
+category = "dev"
+optional = false
+python-versions = ">=3.6.0"
+files = [
+    {file = "charset-normalizer-2.1.1.tar.gz", hash = "sha256:5a3d016c7c547f69d6f81fb0db9449ce888b418b5b9952cc5e6e66843e9dd845"},
+    {file = "charset_normalizer-2.1.1-py3-none-any.whl", hash = "sha256:83e9a75d1911279afd89352c68b45348559d1fc0506b054b346651b5e7fee29f"},
+]
+
+[package.extras]
+unicode-backport = ["unicodedata2"]
+
+[[package]]
+name = "click"
+version = "8.1.3"
+description = "Composable command line interface toolkit"
+category = "dev"
+optional = false
+python-versions = ">=3.7"
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+    {file = "typing_extensions-4.4.0.tar.gz", hash = "sha256:1511434bb92bf8dd198c12b1cc812e800d4181cfcb867674e0f8279cc93087aa"},
+]
+
+[[package]]
+name = "urllib3"
+version = "1.26.13"
+description = "HTTP library with thread-safe connection pooling, file post, and more."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*"
+files = [
+    {file = "urllib3-1.26.13-py2.py3-none-any.whl", hash = "sha256:47cc05d99aaa09c9e72ed5809b60e7ba354e64b59c9c173ac3018642d8bb41fc"},
+    {file = "urllib3-1.26.13.tar.gz", hash = "sha256:c083dd0dce68dbfbe1129d5271cb90f9447dea7d52097c6e0126120c521ddea8"},
+]
+
+[package.extras]
+brotli = ["brotli (>=1.0.9)", "brotlicffi (>=0.8.0)", "brotlipy (>=0.6.0)"]
+secure = ["certifi", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "ipaddress", "pyOpenSSL (>=0.14)", "urllib3-secure-extra"]
+socks = ["PySocks (>=1.5.6,!=1.5.7,<2.0)"]
+
+[[package]]
+name = "webencodings"
+version = "0.5.1"
+description = "Character encoding aliases for legacy web content"
+category = "main"
+optional = true
+python-versions = "*"
+files = [
+    {file = "webencodings-0.5.1-py2.py3-none-any.whl", hash = "sha256:a0af1213f3c2226497a97e2b3aa01a7e4bee4f403f95be16fc9acd2947514a78"},
+    {file = "webencodings-0.5.1.tar.gz", hash = "sha256:b36a1c245f2d304965eb4e0a82848379241dc04b865afcc4aab16748587e1923"},
+]
+
+[[package]]
+name = "zipp"
+version = "3.11.0"
+description = "Backport of pathlib-compatible object wrapper for zip files"
+category = "main"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "zipp-3.11.0-py3-none-any.whl", hash = "sha256:83a28fcb75844b5c0cdaf5aa4003c2d728c77e05f5aeabe8e95e56727005fbaa"},
+    {file = "zipp-3.11.0.tar.gz", hash = "sha256:a7a22e05929290a67401440b39690ae6563279bced5f314609d9d03798f56766"},
+]
+
+[package.extras]
+docs = ["furo", "jaraco.packaging (>=9)", "jaraco.tidelift (>=1.4)", "rst.linker (>=1.9)", "sphinx (>=3.5)"]
+testing = ["flake8 (<5)", "func-timeout", "jaraco.functools", "jaraco.itertools", "more-itertools", "pytest (>=6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.3)", "pytest-flake8", "pytest-mypy (>=0.9.1)"]
+
+[extras]
+berkeleydb = ["berkeleydb"]
+html = ["html5lib"]
+lxml = ["lxml"]
+networkx = ["networkx"]
+
+[metadata]
+lock-version = "2.0"
+python-versions = "^3.7"
+content-hash = "9d02b28eb490584cc2bd1accb2006ea12ee19991511dadf9971204c9697c235f"
diff --git a/pyproject.toml b/pyproject.toml
index 48cd08dbc..88ade542e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,80 @@
+[tool.poetry]
+name = "rdflib"
+version = "6.3.0a0"
+description = """RDFLib is a Python library for working with RDF, \
+a simple yet powerful language for representing information."""
+authors = ["Daniel 'eikeon' Krech <eikeon@eikeon.com>"]
+maintainers = ["RDFLib Team <rdflib-dev@googlegroups.com>"]
+repository = "https://github.com/RDFLib/rdflib"
+documentation = "https://rdflib.readthedocs.org/"
+license = "BSD-3-Clause"
+classifiers=[
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.7",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "License :: OSI Approved :: BSD License",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+    "Operating System :: OS Independent",
+    "Natural Language :: English"
+]
+readme = "README.md"
+
+[tool.poetry.scripts]
+rdfpipe = 'rdflib.tools.rdfpipe:main'
+csv2rdf = 'rdflib.tools.csv2rdf:main'
+rdf2dot = 'rdflib.tools.rdf2dot:main'
+rdfs2dot = 'rdflib.tools.rdfs2dot:main'
+rdfgraphisomorphism = 'rdflib.tools.graphisomorphism:main'
+
+[tool.poetry.dependencies]
+python = "^3.7"
+isodate = "^0.6.0"
+pyparsing = ">=2.1.0,<4"
+importlib-metadata = {version = "^4.0.0", python = ">=3.7,<3.8"}
+berkeleydb = {version = "^18.1.0", optional = true}
+networkx = {version = "^2.0.0", optional = true}
+html5lib = {version = "^1.0", optional = true}
+lxml = {version = "^4.3.0", optional = true}
+
+[tool.poetry.group.dev.dependencies]
+black = "22.12.0"
+isort = "^5.10.0"
+mypy = "0.991"
+lxml-stubs = "^0.4.0"
+
+[tool.poetry.group.tests.dependencies]
+pytest = "^7.1.3"
+pytest-cov = "^4.0.0"
+coverage = {version = "^7.0.1", extras = ["toml"]}
+types-setuptools = "^65.6.0.3"
+setuptools = "^65.6.3"
+
+[tool.poetry.group.docs.dependencies]
+sphinx = ">4.0.0"
+myst-parser = "^0.18.0"
+sphinxcontrib-apidoc = "^0.3.0"
+sphinxcontrib-kroki = "^1.3.0"
+sphinx-autodoc-typehints = "^1.17.1"
+
+[tool.poetry.group.flake8.dependencies]
+flake8 = ">=4.0.1" # flakeheaven is incompatible with flake8 >=5.0 (https://github.com/flakeheaven/flakeheaven/issues/132)
+flakeheaven = "^3.2.1"
+pep8-naming = "^0.13.2"
+
+[tool.poetry.extras]
+berkeleydb = ["berkeleydb"]
+networkx = ["networkx"]
+html = ["html5lib"]
+lxml = ["lxml"]
+
+[build-system]
+requires = ["poetry-core>=1.4.0"]
+build-backend = "poetry.core.masonry.api"
+
 [tool.flakeheaven]
 format = "grouped"
 baseline = ".flakeheaven.baseline"
@@ -45,6 +122,7 @@ exclude = '''
     | \.pytest_cache
     | \.tox
     | \.venv
+    | \.var
     | \.github
     | _build
     | htmlcov
@@ -82,3 +160,70 @@ log_format = "%(asctime)s.%(msecs)03d %(levelname)-8s %(name)-12s %(filename)s:%
 log_date_format = "%Y-%m-%dT%H:%M:%S"
 log_cli_format = "%(asctime)s.%(msecs)03d %(levelname)-8s %(name)-12s %(filename)s:%(lineno)s:%(funcName)s %(message)s"
 log_cli_date_format = "%Y-%m-%dT%H:%M:%S"
+
+[tool.isort]
+profile = "black"
+py_version = 37
+line_length = 88
+src_paths= ["rdflib", "test"]
+supported_extensions = ["pyw", "pyi", "py"]
+skip = [
+    '.eggs',         # exclude a few common directories in the
+    '.git',          # root of the project
+    '.hg',
+    '.mypy_cache',
+    '.pytest_cache',
+    '.tox',
+    '.venv',
+    '.var',
+    '.github',
+    '_build',
+    'htmlcov',
+    'benchmarks',
+    'examples',       # No need to isort examples
+    'test_reports',
+    'rdflib.egg-info',
+    'buck-out',
+    'build',
+    'dist',
+    'venv',
+]
+
+[tool.mypy]
+files = ['rdflib', 'test', 'devtools']
+python_version = "3.7"
+warn_unused_configs = true
+ignore_missing_imports = true
+disallow_subclassing_any = false
+warn_unreachable = true
+warn_unused_ignores = true
+no_implicit_optional = false
+
+[[tool.mypy.overrides]]
+module = "pyparsing.*"
+# This is here because of an upstream issue with pyparsing:
+# https://github.com/pyparsing/pyparsing/issues/385
+# Once the issue is fixed this should be removed.
+follow_imports = "skip"
+
+[tool.coverage.run]
+branch = true
+source = ["rdflib"]
+omit = ["*/_type_checking.py"]
+
+[tool.coverage.report]
+exclude_lines = [
+    # Have to re-enable the standard pragma
+    "pragma: no cover",
+
+    # TYPE_CHECKING guarded code only affects type checkers.
+    "^ *if (False|TYPE_CHECKING):",
+    # constant used in protocols and abstract methods, does not run anything
+    # and has no side effects.
+    '^ +\.\.\.$',
+
+    # Don't complain if non-runnable code isn't run:
+    "if 0:",
+    "if __name__ == .__main__.:",
+    "if __name__==.__main__.:"
+]
diff --git a/rdflib/__init__.py b/rdflib/__init__.py
index dbc60e7f7..45648456f 100644
--- a/rdflib/__init__.py
+++ b/rdflib/__init__.py
@@ -42,10 +42,20 @@
     True
 
 """
+import logging
+import sys
+
+if sys.version_info < (3, 8):
+    # importlib is only available in Python 3.8+; for 3.7 we must do this:
+    import importlib_metadata as metadata
+else:
+    from importlib import metadata
+
+_DISTRIBUTION_METADATA = metadata.metadata("rdflib")
+
 __docformat__ = "restructuredtext en"
 
-# The format of the __version__ line is matched by a regex in setup.py
-__version__ = "6.3.0a0"
+__version__: str = _DISTRIBUTION_METADATA["Version"]
 __date__ = "2022-12-20"
 
 __all__ = [
@@ -88,9 +98,6 @@
     "query",
 ]
 
-import logging
-import sys
-
 logger = logging.getLogger(__name__)
 
 try:
diff --git a/requirements.dev-extra.txt b/requirements.dev-extra.txt
deleted file mode 100644
index cae57fd95..000000000
--- a/requirements.dev-extra.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-berkeleydb
-networkx
diff --git a/requirements.dev.txt b/requirements.dev.txt
deleted file mode 100644
index 819be81ff..000000000
--- a/requirements.dev.txt
+++ /dev/null
@@ -1,11 +0,0 @@
-black==22.12.0
-coverage
-doctest-ignore-unicode==0.1.2
-html5lib
-isort
-mypy
-pytest
-pytest-cov
-types-setuptools
--r docs/sphinx-requirements.txt
--r requirements.flake8.txt
diff --git a/requirements.flake8.txt b/requirements.flake8.txt
deleted file mode 100644
index 535436d69..000000000
--- a/requirements.flake8.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-flake8
-flakeheaven >= 2.1.3; python_version >= '3.8.0'
-pep8-naming
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index 4d1399f83..000000000
--- a/requirements.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-html5lib
-isodate
-pyparsing
-importlib-metadata; python_version < '3.8.0'
diff --git a/setup.cfg b/setup.cfg
index 17a090272..dd7baf900 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -7,6 +7,7 @@ exclude =
     .git,
     __pycache__,
     .venv,
+    .var,
     .tox,
     var,
     .mypy_cache,
@@ -25,77 +26,3 @@ extend-ignore =
     W503, # Line break occurred before a binary operator
     # Disabled because this bumps heads with black
     E231, # missing whitespace after ','
-
-[coverage:run]
-branch = True
-source = rdflib
-omit =
-    */_type_checking.py
-
-[coverage:report]
-# Regexes for lines to exclude from consideration
-exclude_lines =
-    # Have to re-enable the standard pragma
-    pragma: no cover
-
-    # TYPE_CHECKING guarded code only affects type checkers.
-    ^ *if (False|TYPE_CHECKING):
-    # constant used in protocols and abstract methods, does not run anything
-    # and has no side effects.
-    ^ +\.\.\.$
-
-    # Don't complain if non-runnable code isn't run:
-    if 0:
-    if __name__ == .__main__.:
-    if __name__==.__main__.:
-
-[mypy]
-files = rdflib,test,devtools
-python_version = 3.7
-warn_unused_configs = True
-ignore_missing_imports = True
-disallow_subclassing_any = False
-warn_unreachable = True
-warn_unused_ignores = True
-no_implicit_optional = False
-
-# This is here to exclude the setup.py files in test plugins because these
-# confuse mypy as mypy think they are the same module.
-exclude = (?x)(
-    ^.*test/plugins/.*/setup.py$
-  )
-
-[mypy-pyparsing.*]
-# This is here because of an upstream issue with pyparsing:
-# https://github.com/pyparsing/pyparsing/issues/385
-# Once the issue is fixed this should be removed.
-follow_imports = skip
-
-[isort]
-profile = black
-py_version = 37
-line_length = 88
-src_paths=rdflib,test
-supported_extensions =
-    pyw
-    pyi
-    py
-skip =
-    .eggs,         # exclude a few common directories in the
-    .git,          # root of the project
-    .hg,
-    .mypy_cache,
-    .pytest_cache,
-    .tox,
-    .venv,
-    .github,
-    _build,
-    htmlcov,
-    benchmarks,
-    examples,       # No need to Black examples
-    test_reports,
-    rdflib.egg-info,
-    buck-out,
-    build,
-    dist,
-    venv,
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 315f4222d..000000000
--- a/setup.py
+++ /dev/null
@@ -1,109 +0,0 @@
-#!/usr/bin/env python
-
-import codecs
-import os
-import re
-
-from setuptools import find_packages, setup
-
-kwargs = {}
-kwargs["install_requires"] = [
-    "isodate",
-    "pyparsing",
-    "setuptools",
-    "importlib-metadata; python_version < '3.8.0'",
-]
-kwargs["tests_require"] = [
-    "html5lib",
-    "pytest",
-    "pytest-cov",
-]
-kwargs["extras_require"] = {
-    "html": ["html5lib"],
-    "tests": kwargs["tests_require"],
-    "docs": [
-        "myst-parser",
-        "sphinx>=5,<6",
-        "sphinxcontrib-apidoc",
-        "sphinxcontrib-kroki",
-        "sphinx-autodoc-typehints",
-    ],
-    "berkeleydb": ["berkeleydb"],
-    "networkx": ["networkx"],
-    "dev": [
-        "black==22.12.0",
-        "flake8",
-        "flakeheaven >= 2.1.3; python_version >= '3.8.0'",
-        "isort",
-        "mypy",
-        "pep8-naming",
-        "types-setuptools",
-    ],
-}
-
-
-def find_version(filename):
-    _version_re = re.compile(r'__version__ = "(.*)"')
-    for line in open(filename):
-        version_match = _version_re.match(line)
-        if version_match:
-            return version_match.group(1)
-
-
-def open_local(paths, mode="r", encoding="utf8"):
-    path = os.path.join(os.path.abspath(os.path.dirname(__file__)), *paths)
-    return codecs.open(path, mode, encoding)
-
-
-with open_local(["README.md"], encoding="utf-8") as readme:
-    long_description = readme.read()
-
-version = find_version("rdflib/__init__.py")
-
-packages = find_packages(exclude=("examples*", "test*"))
-
-if os.environ.get("READTHEDOCS", None):
-    # if building docs for RTD
-    # install examples, to get docstrings
-    packages.append("examples")
-
-setup(
-    name="rdflib",
-    version=version,
-    description="RDFLib is a Python library for working with RDF, a "
-    "simple yet powerful language for representing information.",
-    author="Daniel 'eikeon' Krech",
-    author_email="eikeon@eikeon.com",
-    maintainer="RDFLib Team",
-    maintainer_email="rdflib-dev@googlegroups.com",
-    url="https://github.com/RDFLib/rdflib",
-    license="bsd-3-clause",
-    platforms=["any"],
-    python_requires=">=3.7",
-    classifiers=[
-        "Programming Language :: Python",
-        "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.8",
-        "Programming Language :: Python :: 3.9",
-        "Programming Language :: Python :: 3.10",
-        "Programming Language :: Python :: 3.11",
-        "License :: OSI Approved :: BSD License",
-        "Topic :: Software Development :: Libraries :: Python Modules",
-        "Operating System :: OS Independent",
-        "Natural Language :: English",
-    ],
-    long_description=long_description,
-    long_description_content_type="text/markdown",
-    packages=packages,
-    entry_points={
-        "console_scripts": [
-            "rdfpipe = rdflib.tools.rdfpipe:main",
-            "csv2rdf = rdflib.tools.csv2rdf:main",
-            "rdf2dot = rdflib.tools.rdf2dot:main",
-            "rdfs2dot = rdflib.tools.rdfs2dot:main",
-            "rdfgraphisomorphism = rdflib.tools.graphisomorphism:main",
-        ],
-    },
-    **kwargs,
-)
diff --git a/test/test_literal/test_xmlliterals.py b/test/test_literal/test_xmlliterals.py
index ca5950855..7aa7443cb 100644
--- a/test/test_literal/test_xmlliterals.py
+++ b/test/test_literal/test_xmlliterals.py
@@ -8,6 +8,13 @@
 import rdflib
 from rdflib import RDF, Literal
 
+try:
+    import html5lib  # noqa: F401
+
+    have_html5lib = True
+except ImportError:
+    have_html5lib = False
+
 
 def testPythonRoundtrip():
     l1 = Literal("<msg>hello</msg>", datatype=RDF.XMLLiteral)
@@ -83,6 +90,7 @@ def testRoundtrip():
     roundtrip("nt")
 
 
+@pytest.mark.skipif(not have_html5lib, reason="requires html5lib")
 def testHTML():
 
     l1 = Literal("<msg>hello</msg>", datatype=RDF.XMLLiteral)
diff --git a/test/test_sparql/test_prefixed_name.py b/test/test_sparql/test_prefixed_name.py
index ca793ef77..99d2fb108 100644
--- a/test/test_sparql/test_prefixed_name.py
+++ b/test/test_sparql/test_prefixed_name.py
@@ -76,10 +76,10 @@ def blank_graph() -> Graph:
     ["pname_ns", "pname", "expected_result"],
     itertools.chain(
         [
-            ("eg", "invalid/PN_PREFIX", pyparsing.exceptions.ParseException),
+            ("eg", "invalid/PN_PREFIX", pyparsing.ParseException),
             ("", "eg:a", Exception),
-            ("", ":invalid PN_LOCAL", pyparsing.exceptions.ParseException),
-            ("", ":invalid/PN_LOCAL", pyparsing.exceptions.ParseException),
+            ("", ":invalid PN_LOCAL", pyparsing.ParseException),
+            ("", ":invalid/PN_LOCAL", pyparsing.ParseException),
             ("", ":a:b:c", PNAME_PREFIX["a:b:c"]),
             ("", ":", URIRef(f"{PNAME_PREFIX}")),
             ("", ":a", PNAME_PREFIX.a),
diff --git a/tox.ini b/tox.ini
index ab19e2b70..87d89d028 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,59 +1,89 @@
+# https://tox.wiki/en/latest/user_guide.html
 # https://tox.wiki/en/latest/config.html
 [tox]
 envlist =
     flake8,py3{7,8,9,10,11},covreport,docs,precommit
+isolated_build = True
+toxworkdir={env:TOX_WORK_DIR:{tox_root}/.tox}
 
 [testenv]
-deps =
-    lxml: lxml
-    lxml: lxml-stubs
-    extensive: berkeleydb-stubs
+passenv =
+    DBUS_SESSION_BUS_ADDRESS # This is needed for keyring acccess on Linux.
+allowlist_externals = poetry
 setenv =
     extensive: BERKELEYDB_DIR = /usr
     COVERAGE_FILE = {env:COVERAGE_FILE:{toxinidir}/.coverage.{envname}}
     MYPY_CACHE_DIR = {envdir}/.mypy_cache
-extras =
-    tests
-    dev
-    extensive: berkeleydb
-    extensive: networkx
-    docs: docs
+    docs: POETRY_ARGS_docs = --only=docs
+    extensive: POETRY_ARGS_extensive = --extras=berkeleydb --extras=networkx
+    lxml: POETRY_ARGS_lxml = --extras=lxml
+commands_pre =
+    py3{7,8,9,10,11}: python -c 'import os; print("\n".join(f"{key}={value}" for key, value in os.environ.items()))'
+    py3{7,8,9,10,11}: poetry lock --check
+    py3{7,8,9,10,11}: poetry install --no-root --only=main --only=dev --only=flake8 --only=tests --extras=html  {env:POETRY_ARGS_docs:} {env:POETRY_ARGS_extensive:} {env:POETRY_ARGS_lxml:} {env:POETRY_ARGS:} --sync
 commands =
     {env:TOX_EXTRA_COMMAND:}
-    {env:TOX_MYPY_COMMAND:{envpython} -m mypy --show-error-context --show-error-codes --junit-xml=test_reports/{env:TOX_JUNIT_XML_PREFIX:}mypy-junit.xml}
-    {posargs:{envpython} -m pytest -ra --tb=native {env:TOX_PYTEST_ARGS:--junit-xml=test_reports/{env:TOX_JUNIT_XML_PREFIX:}pytest-junit.xml --cov --cov-report=}}
-    docs: sphinx-build -n -T -W -b html -d {envdir}/doctree docs docs/_build/html
+    {env:TOX_MYPY_COMMAND:poetry run python -m mypy --show-error-context --show-error-codes --junit-xml=test_reports/{env:TOX_JUNIT_XML_PREFIX:}mypy-junit.xml}
+    {posargs:poetry run pytest -ra --tb=native {env:TOX_PYTEST_ARGS:--junit-xml=test_reports/{env:TOX_JUNIT_XML_PREFIX:}pytest-junit.xml --cov --cov-report=}}
+    docs: poetry run sphinx-build -T -W -b html -d {envdir}/doctree docs docs/_build/html
 
 [testenv:covreport]
-deps = coverage
 skip_install = true
 parallel_show_output = true
 depends = py3{7,8,9,10}{-extensive,}{-docs,}
 setenv =
     COVERAGE_FILE=
+commands_pre =
+    poetry install --no-root --only=tests
 commands =
-    {envpython} -m coverage combine
-    {envpython} -m coverage report
+    poetry run python -m coverage combine
+    poetry run python -m coverage report
 
 [testenv:flake8]
-deps =
-    -rrequirements.flake8.txt
 skip_install = true
+commands_pre =
+    poetry install --no-root --only=flake8
 commands =
-    {envpython} -m flakeheaven lint
+    poetry run python -m flakeheaven lint
+
 
 [testenv:docs]
-extras = docs
-passenv = TERM
+passenv =
+    TERM
+    DBUS_SESSION_BUS_ADDRESS
 setenv =
     PYTHONHASHSEED = 0
+commands_pre =
+    poetry install --no-root --only=docs
+commands =
+    poetry run sphinx-build -T -W -b html -d {envdir}/doctree docs docs/_build/html
+
+[testenv:py37-extensive-min]
+base = void
+deps =
+    pytest==7.*
+    pytest-cov==4.*
+setenv =
+    BERKELEYDB_DIR = /usr
+    COVERAGE_FILE = {env:COVERAGE_FILE:{toxinidir}/.coverage.{envname}}
+    PIP_CONSTRAINT = devtools/constraints-min.txt
+extras =
+    berkeleydb
+    networkx
+    lxml
+    html
 commands =
-    sphinx-build -T -W -b html -d {envdir}/doctree docs docs/_build/html
+    {envpython} --version
+    pip freeze
+    {posargs:{envpython} -m pytest -ra --tb=native {env:TOX_PYTEST_ARGS:--junit-xml=test_reports/{env:TOX_JUNIT_XML_PREFIX:}pytest-junit.xml --cov --cov-report=}}
 
 [testenv:precommit{,all}]
 skip_install = true
 deps = pre-commit
-passenv = HOMEPATH  # needed on Windows
+passenv =
+    HOMEPATH  # needed on Windows
+    PRE_COMMIT_HOME # so that users can configure it
+    XDG_CACHE_HOME # so that pre-commit won't use the default
 commands =
     precommit: pre-commit run
     precommitall: pre-commit run --all-files