From 7c2604108cf8716743089425943659528ae1db71 Mon Sep 17 00:00:00 2001
From: Jens Tirsvad Nielsen <jenstirsvad@gmail.com>
Date: Tue, 13 Oct 2026 16:27:09 +0800
Subject: [PATCH 1/2] Run yamllint and actionlint in CI

No issue closed: CI change requested by S01.
---
 .gitea/workflows/ci.yml | 98 ++++++++++++++++++++++-------------------
 .yamllint.yml           |  6 +--
 README.md               |  3 +-
 3 files changed, 57 insertions(+), 50 deletions(-)

diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index a9460a4..18490bb 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -1,46 +1,52 @@
-# Continuous integration for the squirrel census project: runs the pytest tests
-# on Python 3.13 for every push and pull request. Read by Gitea Actions (a
-# runner must be registered for the repository). It changes nothing outside the
-# repository and uses no secret. Decision: MIL-001 task "Add CI workflow".
-# Host: Gitea Actions; uses only github.* contexts, so it also runs on GitHub.
-
-name: Tests
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-
-permissions:
-  contents: read
-
-env:
-  PYTHON_VERSION: "3.13"
-  PIP_VERSION: "26.2.1"
-
-concurrency:
-  group: tests-${{ github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  pytest:
-    name: Run the tests
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    steps:
-      - name: Check out the code
-        uses: actions/checkout@v4.2.2
-
-      - name: Set up Python
-        uses: actions/setup-python@v5.6.0
-        with:
-          python-version: ${{ env.PYTHON_VERSION }}
-
-      - name: Create the virtual environment and install
-        run: |
-          python -m venv .venv
-          .venv/bin/python -m pip install --upgrade "pip==${PIP_VERSION}"
-          .venv/bin/python -m pip install -e ".[dev]"
-
-      - name: Run the tests
-        run: .venv/bin/python -m pytest
+# Continuous integration for the squirrel census project: lints the YAML and
+# workflow files and runs the pytest tests on Python 3.13 for every push and
+# pull request. Read by Gitea Actions (a runner must be registered for the
+# repository). It changes nothing outside the repository and uses no secret. Decision: MIL-001 task "Add CI workflow".
+# Host: Gitea Actions; uses only github.* contexts, so it also runs on GitHub.
+
+name: Tests
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+permissions:
+  contents: read
+
+env:
+  PYTHON_VERSION: "3.13"
+  PIP_VERSION: "26.2.1"
+
+concurrency:
+  group: tests-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  pytest:
+    name: Run the tests
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - name: Check out the code
+        uses: actions/checkout@v4.2.2
+
+      - name: Set up Python
+        uses: actions/setup-python@v5.6.0
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+
+      - name: Create the virtual environment and install
+        run: |
+          python -m venv .venv
+          .venv/bin/python -m pip install --upgrade "pip==${PIP_VERSION}"
+          .venv/bin/python -m pip install -e ".[dev]"
+
+      - name: Lint the YAML files
+        run: .venv/bin/python -m yamllint -c .yamllint.yml .gitea .yamllint.yml
+
+      - name: Lint the workflow files
+        run: .venv/bin/actionlint .gitea/workflows/*.yml
+
+      - name: Run the tests
+        run: .venv/bin/python -m pytest
diff --git a/.yamllint.yml b/.yamllint.yml
index e35c665..cf517e2 100644
--- a/.yamllint.yml
+++ b/.yamllint.yml
@@ -6,6 +6,6 @@ rules:
     max: 100
   truthy:
     check-keys: false
-  # Git on Windows checks files out with CRLF; the repository blob has LF.
-  new-lines:
-    type: platform
+  # Line endings are normalised by git (LF in the repository, CRLF in some
+  # Windows checkouts), so the rule would fail on a local checkout only.
+  new-lines: disable
diff --git a/README.md b/README.md
index 87fac0c..b5865ec 100644
--- a/README.md
+++ b/README.md
@@ -90,7 +90,8 @@ it is present.
 
 The workflow [`.gitea/workflows/ci.yml`][ci] runs for every push to `main` and for every
 pull request. It sets up Python 3.13, creates a `.venv`, upgrades `pip`, installs the
-project with `.[dev]` and runs `python -m pytest`. It uses `github.*` contexts only, so
+project with `.[dev]`, lints the YAML and workflow files with `yamllint` and
+`actionlint`, and runs `python -m pytest`. It uses `github.*` contexts only, so
 it also runs on GitHub Actions.
 
 ## Build the source documentation

From 16811c53fa17c1b3c14738e0605df23908740567 Mon Sep 17 00:00:00 2001
From: Jens Tirsvad Nielsen <jenstirsvad@gmail.com>
Date: Tue, 13 Oct 2026 16:27:26 +0800
Subject: [PATCH 2/2] Wrap the workflow header comment to the yamllint line
 limit

---
 .gitea/workflows/ci.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 18490bb..c325dd5 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -1,7 +1,8 @@
 # Continuous integration for the squirrel census project: lints the YAML and
 # workflow files and runs the pytest tests on Python 3.13 for every push and
 # pull request. Read by Gitea Actions (a runner must be registered for the
-# repository). It changes nothing outside the repository and uses no secret. Decision: MIL-001 task "Add CI workflow".
+# repository). It changes nothing outside the repository and uses no secret.
+# Decision: MIL-001 task "Add CI workflow".
 # Host: Gitea Actions; uses only github.* contexts, so it also runs on GitHub.
 
 name: Tests