Settle on Python 3.12 for the "official version"

The README needed updating, and I wanted to provide a way to install
without relying on pipenv. So I added a make target for this and
documented it. But really, pipenv expects that you're just using a
single Python version, and for simplicity, it should be the most recent
version available on OL9. Thus, I've reset all the depnedencies to 3.12.

Now, the README shows a valid way to install (some version of) the
dependencies and get the project running, and using pipenv will set it
up with the exact dependencies too. The CI system will use Python 3.12
too, so we should be set.

Signed-off-by: Stephen Brennan <[email protected]>

.github/workflows/lint.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.13'
+          python-version: '3.12'
       - name: Install pre-commit and mypy
         run: pip install pipenv && make dev
       - name: Run pre-commit hooks

.github/workflows/publish.yml

@@ -22,13 +22,13 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.13'
+          python-version: '3.12'
       - name: Install dependencies
         run: |
           sudo apt-get update
           sudo apt-get install gzip bzip2 xz-utils zstd tar rpm cpio dpkg make
           pip install pipenv
-          make venv
+          mkdir -p .venv && pipenv install
       - name: Checkout gh-pages and setup git
         run: |
           git fetch origin gh-pages --depth=1

Makefile

@@ -1,12 +1,13 @@
 # Copyright (c) 2024, Oracle and/or its affiliates.
 # Licensed under the terms of the GNU General Public License.
 
-PYTHON ?= python3.13
+PYTHON ?= python3.12
 
 .PHONY: venv
 venv:
-	@mkdir -p .venv  # ensure that pipenv sees .venv
-	$(PYTHON) -m pipenv install
+	rm -rf .venv
+	$(PYTHON) -m venv .venv
+	sed -n '/^\[packages\]$$/,/^\[dev-packages\]$$/p' Pipfile | grep -v '^\[' | sed 's/ =.*$$//' | xargs .venv/bin/pip install
 
 .PHONY: run
 run:
@@ -16,10 +17,10 @@ run:
 
 .PHONY: dev
 dev:
-	@mkdir -p .venv  # ensure that pipenv sees .venv
-	$(PYTHON) -m pipenv install --dev
+	@rm -rf .venv && mkdir -p .venv  # ensure that pipenv sees .venv
+	pipenv install --dev
 	.venv/bin/pre-commit install --install-hooks
 
 .PHONY: upgrade-requirements
 upgrade-requirements:
-	$(PYTHON) -m pipenv upgrade
+	pipenv upgrade

Pipfile

@@ -15,4 +15,4 @@ types-aiofiles = "*"
 pre-commit = "*"
 
 [requires]
-python_version = "3.13"
+python_version = "3.12"