add python 3.12 support and fix development dependencies in dockerfile

nautobot-app/{{ cookiecutter.project_slug }}/.github/workflows/ci.yml

@@ -13,7 +13,7 @@ on: # yamllint disable-line rule:truthy rule:comments
   pull_request: ~
 
 env:
-  APP_NAME: "{{ cookiecutter.project_slug }}"
+  APP_NAME: "{{ cookiecutter.app_slug }}"
 
 jobs:
   ruff-format:
@@ -103,6 +103,10 @@ jobs:
         uses: "actions/checkout@v4"
       - name: "Setup environment"
         uses: "networktocode/gh-action-setup-poetry-environment@v6"
+      - name: "Constrain Nautobot version and regenerate lock file"
+        env:
+          INVOKE_NAUTOBOT_DEV_EXAMPLE_LOCAL: "true"
+        run: "poetry run invoke lock --constrain-nautobot-ver --constrain-python-ver"
       - name: "Set up Docker Buildx"
         id: "buildx"
         uses: "docker/setup-buildx-action@v3"
@@ -120,6 +124,7 @@ jobs:
           build-args: |
             NAUTOBOT_VER={% raw %}${{ matrix.nautobot-version }}{% endraw %}
             PYTHON_VER={% raw %}${{ matrix.python-version }}{% endraw %}
+            CI=true
       - name: "Copy credentials"
         run: "cp development/creds.example.env development/creds.env"
       - name: "Linting: pylint"
@@ -134,14 +139,14 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        python-version: ["3.8", "3.11"]
+        python-version: ["3.8", "3.12"]
         db-backend: ["postgresql"]
         nautobot-version: ["stable"]
         include:
           - python-version: "3.11"
             db-backend: "postgresql"
             nautobot-version: "{{ cookiecutter.min_nautobot_version }}"
-          - python-version: "3.11"
+          - python-version: "3.12"
             db-backend: "mysql"
             nautobot-version: "stable"
     runs-on: "ubuntu-22.04"
@@ -170,6 +175,7 @@ jobs:
           build-args: |
             NAUTOBOT_VER={% raw %}${{ matrix.nautobot-version }}{% endraw %}
             PYTHON_VER={% raw %}${{ matrix.python-version }}{% endraw %}
+            CI=true
       - name: "Copy credentials"
         run: "cp development/creds.example.env development/creds.env"
       - name: "Use Mysql invoke settings when needed"
@@ -208,7 +214,7 @@ jobs:
       - name: "Set up Python"
         uses: "actions/setup-python@v5"
         with:
-          python-version: "3.11"
+          python-version: "3.12"
       - name: "Install Python Packages"
         run: "pip install poetry"
       - name: "Set env"
@@ -243,7 +249,7 @@ jobs:
       - name: "Set up Python"
         uses: "actions/setup-python@v5"
         with:
-          python-version: "3.11"
+          python-version: "3.12"
       - name: "Install Python Packages"
         run: "pip install poetry"
       - name: "Set env"

nautobot-app/{{ cookiecutter.project_slug }}/development/Dockerfile

@@ -53,29 +53,18 @@ RUN which poetry || curl -sSL https://install.python-poetry.org | python3 - && \
 WORKDIR /source
 COPY . /source
 
-# Get container's installed Nautobot version as a forced constraint
-# NAUTOBOT_VER may be a branch name and not a published release therefor we need to get the installed version
-#  so pip can use it to recognize local constraints.
-RUN pip show nautobot | grep "^Version: " | sed -e 's/Version: /nautobot==/' > constraints.txt
+# Build args must be declared in each stage
+ARG PYTHON_VER
 
-# Use Poetry to grab dev dependencies from the lock file
-# Can be improved in Poetry 1.2 which allows `poetry install --only dev`
-#
-# We can't use the entire freeze as it takes forever to resolve with rigidly fixed non-direct dependencies,
-#   especially those that are only direct to Nautobot but the container included versions slightly mismatch
-RUN poetry export -f requirements.txt --without-hashes --extras all --output poetry_freeze_base.txt
-RUN poetry export -f requirements.txt --without-hashes --extras all --with dev --output poetry_freeze_all.txt
-RUN sort poetry_freeze_base.txt poetry_freeze_all.txt | uniq -u > poetry_freeze_dev.txt
-
-# Install all local project as editable, constrained on Nautobot version, to get any additional
-#   direct dependencies of the app
-RUN --mount=type=cache,target="/root/.cache/pip",sharing=locked \
-    pip install -c constraints.txt -e .[all]
+# Constrain the Nautobot version to NAUTOBOT_VER
+# In CI, this should be done outside of the Dockerfile to prevent cross-compile build failures
+ARG CI
+RUN if [ -z "${CI+x}" ]; then \
+    INSTALLED_NAUTOBOT_VER=$(pip show nautobot | grep "^Version" | sed "s/Version: //"); \
+    poetry add --lock nautobot@${INSTALLED_NAUTOBOT_VER} --python ${PYTHON_VER}; fi
 
-# Install any dev dependencies frozen from Poetry
-# Can be improved in Poetry 1.2 which allows `poetry install --only dev`
-RUN --mount=type=cache,target="/root/.cache/pip",sharing=locked \
-    pip install -c constraints.txt -r poetry_freeze_dev.txt
+# Install the app
+RUN poetry install --extras all --with dev
 
 COPY development/nautobot_config.py ${NAUTOBOT_ROOT}/nautobot_config.py
 # !!! USE CAUTION WHEN MODIFYING LINES ABOVE

nautobot-app/{{ cookiecutter.project_slug }}/invoke.example.yml

@@ -1,12 +1,15 @@
 ---
 {{ cookiecutter.app_name }}:
-  project_name: "{{ cookiecutter.app_slug }}"
   nautobot_ver: "{{ cookiecutter.min_nautobot_version }}"
-  local: false
   python_ver: "3.11"
-  compose_dir: "development"
-  compose_files:
-    - "docker-compose.base.yml"
-    - "docker-compose.redis.yml"
-    - "docker-compose.postgres.yml"
-    - "docker-compose.dev.yml"
+  # local: false
+  # compose_dir: "/full/path/to/{{ cookiecutter.project_slug }}/development"
+
+# The following is an example of using MySQL as the database backend
+# ---
+# {{ cookiecutter.app_name }}:
+#   compose_files:
+#     - "docker-compose.base.yml"
+#     - "docker-compose.redis.yml"
+#     - "docker-compose.mysql.yml"
+#     - "docker-compose.dev.yml"

nautobot-app/{{ cookiecutter.project_slug }}/pyproject.toml

@@ -19,6 +19,7 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
 ]
 packages = [
     { include = "{{ cookiecutter.app_name }}" },
@@ -29,7 +30,7 @@ include = [
 ]
 
 [tool.poetry.dependencies]
-python = ">=3.8,<3.12"
+python = ">=3.8,<3.13"
 # Used for local development
 nautobot = "^{{ cookiecutter.min_nautobot_version }}"
 

nautobot-app/{{ cookiecutter.project_slug }}/tasks.py

@@ -13,10 +13,12 @@
 """
 
 import os
+import re
 from pathlib import Path
 from time import sleep
 
 from invoke.collection import Collection
+from invoke.exceptions import Exit
 from invoke.tasks import task as invoke_task
 
 
@@ -48,7 +50,7 @@ def is_truthy(arg):
 namespace.configure(
     {
         "{{ cookiecutter.app_name }}": {
-            "nautobot_ver": "{{ cookiecutter.min_nautobot_version }}",
+            "nautobot_ver": "2.3.1",
             "project_name": "{{ cookiecutter.app_slug }}",
             "python_ver": "3.11",
             "local": False,
@@ -205,17 +207,51 @@ def generate_packages(context):
     run_command(context, command)
 
 
+def _get_docker_nautobot_version(context, nautobot_ver=None, python_ver=None):
+    """Extract Nautobot version from base docker image."""
+    if nautobot_ver is None:
+        nautobot_ver = context.{{ cookiecutter.app_name }}.nautobot_ver
+    if python_ver is None:
+        python_ver = context.{{ cookiecutter.app_name }}.python_ver
+    dockerfile_path = os.path.join(context.{{ cookiecutter.app_name }}.compose_dir, "Dockerfile")
+    base_image = context.run(f"grep --max-count=1 '^FROM ' {dockerfile_path}", hide=True).stdout.strip().split(" ")[1]
+    base_image = base_image.replace(r"${NAUTOBOT_VER}", nautobot_ver).replace(r"${PYTHON_VER}", python_ver)
+    pip_nautobot_ver = context.run(f"docker run --rm --entrypoint '' {base_image} pip show nautobot", hide=True)
+    match_version = re.search(r"^Version: (.+)$", pip_nautobot_ver.stdout.strip(), flags=re.MULTILINE)
+    if match_version:
+        return match_version.group(1)
+    else:
+        raise Exit(f"Nautobot version not found in Docker base image {base_image}.")
+
+
 @task(
     help={
         "check": (
             "If enabled, check for outdated dependencies in the poetry.lock file, "
             "instead of generating a new one. (default: disabled)"
-        )
+        ),
+        "constrain_nautobot_ver": (
+            "Run 'poetry add nautobot@[version] --lock' to generate the lockfile, "
+            "where [version] is the version installed in the Dockerfile's base image. "
+            "Generally intended to be used in CI and not for local development. (default: disabled)"
+        ),
+        "constrain_python_ver": (
+            "When using `constrain_nautobot_ver`, further constrain the nautobot version "
+            "to python_ver so that poetry doesn't complain about python version incompatibilities. "
+            "Generally intended to be used in CI and not for local development. (default: disabled)"
+        ),
     }
 )
-def lock(context, check=False):
-    """Generate poetry.lock inside the Nautobot container."""
-    run_command(context, f"poetry {'check' if check else 'lock --no-update'}")
+def lock(context, check=False, constrain_nautobot_ver=False, constrain_python_ver=False):
+    """Generate poetry.lock file."""
+    if constrain_nautobot_ver:
+        docker_nautobot_version = _get_docker_nautobot_version(context)
+        command = f"poetry add --lock nautobot@{docker_nautobot_version}"
+        if constrain_python_ver:
+            command += f" --python {context.{{ cookiecutter.app_name }}.python_ver}"
+    else:
+        command = f"poetry {'check' if check else 'lock --no-update'}"
+    run_command(context, command)
 
 
 # ------------------------------------------------------------------------------