From a164b69317e4fd64b44f408dbc217bc30684fa42 Mon Sep 17 00:00:00 2001
From: t0kubetsu <alexis.danjon@nc3.lu>
Date: Wed, 12 Aug 2026 14:47:57 +0200
Subject: [PATCH 1/2] ci: add GitHub Actions workflow

Runs lint and the test suite on push and pull request to main, across
Python 3.11-3.13 (the range pyproject declares via requires-python).

Hardening applied per GitHub's own recommendations:
- actions pinned to full commit SHAs, not floating tags
- permissions: contents: read (the default token grant is far wider)
- persist-credentials: false, so no token is left in .git/config
- concurrency group cancels superseded runs
- fail-fast: false, so one interpreter failing does not mask the rest
- timeout-minutes, so a hung job cannot occupy a runner indefinitely
---
 .github/workflows/ci.yml | 55 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 .github/workflows/ci.yml

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..dd61a7b
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,55 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+# A new push supersedes the previous run on the same ref.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+# Least privilege: this workflow only ever reads the repository.
+permissions:
+  contents: read
+
+jobs:
+  test:
+    name: Python ${{ matrix.python-version }}
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    strategy:
+      # One failing interpreter must not mask the others.
+      fail-fast: false
+      matrix:
+        # pyproject declares requires-python >= 3.11, so every supported
+        # interpreter is exercised.
+        python-version: ["3.11", "3.12", "3.13"]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          # No credential is needed after checkout; leaving one in .git/config
+          # would expose it to anything later in the job.
+          persist-credentials: false
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
+        with:
+          python-version: ${{ matrix.python-version }}
+          cache: pip
+          cache-dependency-path: pyproject.toml
+
+      - name: Install (editable, with dev extras)
+        run: python -m pip install -e ".[dev]"
+
+      - name: Lint
+        run: ruff check chainvalidator/
+
+      - name: Test
+        # Network I/O is isolated in the *_utils modules and mocked there, so
+        # the suite needs neither a live network nor any external binary.
+        run: pytest --tb=short -q

From 652b98728e266e08979e47b7d47c21ebfe2c83b1 Mon Sep 17 00:00:00 2001
From: t0kubetsu <alexis.danjon@nc3.lu>
Date: Wed, 12 Aug 2026 15:00:37 +0200
Subject: [PATCH 2/2] ci: declare the ruff rule set and provision ruff in dev
 extras
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The first CI run failed on every module, in two ways tracing to one root
cause: lint was never actually pinned down.

1. 'ruff: command not found' — ruff is required by the before-commit
   checklist but was absent from the dev extras, so pip install -e
   '.[dev]' never provided it. It passed locally only because developer
   venvs had it installed by hand.

2. Lint failures on a clean checkout — with no [tool.ruff] section the
   linted rule set is whatever the installed ruff defaults to, and that
   widens each release, so a green local run and a red CI run could
   disagree purely by version.

Copies the pattern portscanner already used (the only module that
passed): pin target-version, state select = [E4, E7, E9, F] explicitly,
add ruff>=0.6 to dev. No source change needed — every module passes this
rule set as-is.
---
 pyproject.toml | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/pyproject.toml b/pyproject.toml
index 577a065..ebe9e7f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -70,7 +70,17 @@ where = ["."]
 include = ["chainvalidator*"]
 
 [project.optional-dependencies]
-dev = ["pytest>=8", "pytest-cov>=5", "pytest-mock>=3.12"]
+dev = ["pytest>=8", "pytest-cov>=5", "ruff>=0.6", "pytest-mock>=3.12"]
+
+[tool.ruff]
+target-version = "py311"
+
+[tool.ruff.lint]
+# Ruff's default rule set as of 0.6, made explicit. Without this the linted
+# rule set is whatever the installed ruff defaults to, which widens on every
+# release — so a green local run and a red CI run can disagree purely by
+# version. Pinning it here makes the bar reviewable and stable.
+select = ["E4", "E7", "E9", "F"]
 
 [tool.pytest.ini_options]
 pythonpath = ["."]