Thank you Doctor Zizmor!

.github/workflows/ci.yml

@@ -23,6 +23,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
+          persist-credentials: false
 
       - uses: hynek/build-and-inspect-python-package@v2
         id: baipp
@@ -56,11 +57,14 @@ jobs:
       - uses: hynek/setup-cached-uv@v2
 
       - name: Prepare & run Nox
+        env:
+          PYTHON: ${{ matrix.python-version }}
+
         run: >
           uvx
           --with "tomli; python_version<'3.11'"
           nox
-          --python ${{ matrix.python-version }}
+          --python $PYTHON
           --sessions tests
           -- --installpkg dist/*.whl
 
@@ -80,6 +84,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: actions/setup-python@v5
         with:
           python-version-file: .python-version-default
@@ -118,6 +124,8 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ${{ fromJson(needs.build-package.outputs.python-versions) }}
+    env:
+      PYTHON: ${{ matrix.python-version }}
 
     steps:
       - name: Download pre-built packages
@@ -137,15 +145,15 @@ jobs:
           uvx
           --with "tomli; python_version<'3.11'"
           nox
-          --python ${{ matrix.python-version }}
+          --python $PYTHON
           --sessions mypy_api
 
       - name: Check using Pyright
         run: >
           uvx
           --with "tomli; python_version<'3.11'"
           nox
-          --python ${{ matrix.python-version }}
+          --python $PYTHON
           --sessions pyright_api
 
   mypy-pkg:
@@ -197,6 +205,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: actions/setup-python@v5
         with:
           python-version-file: .python-version-default

.github/workflows/codeql-analysis.yml

@@ -25,11 +25,16 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v3
         with:
           languages: ${{ matrix.language }}
 
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v3
+
       - name: Perform CodeQL Analysis
         uses: github/codeql-action/analyze@v3

.github/workflows/pypi-package.yml

@@ -1,5 +1,5 @@
 ---
-name: Build & maybe upload PyPI package
+name: Build & upload PyPI package
 
 on:
   push:
@@ -10,32 +10,38 @@ on:
       - published
   workflow_dispatch:
 
-permissions:
-  attestations: write
-  contents: read
-  id-token: write
 
 jobs:
+  # Always build & lint package.
   build-package:
     name: Build & verify package
     runs-on: ubuntu-latest
+    permissions:
+      attestations: write
+      id-token: write
 
     steps:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
+          persist-credentials: false
 
       - uses: hynek/build-and-inspect-python-package@v2
         with:
           attest-build-provenance-github: 'true'
 
+
+  # Upload to Test PyPI on every commit on main.
   release-test-pypi:
     name: Publish in-dev package to test.pypi.org
     environment: release-test-pypi
-    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    if: github.repository_owner == 'hynek' && github.event_name == 'push' && github.ref == 'refs/heads/main'
     runs-on: ubuntu-latest
     needs: build-package
 
+    permissions:
+      id-token: write
+
     steps:
       - name: Download packages built by build-and-inspect-python-package
         uses: actions/download-artifact@v4
@@ -46,16 +52,21 @@ jobs:
       - name: Upload package to Test PyPI
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
+          attestations: true
           repository-url: https://test.pypi.org/legacy/
 
+
   # Upload to real PyPI on GitHub Releases.
   release-pypi:
     name: Publish released package to pypi.org
     environment: release-pypi
-    if: github.event.action == 'published'
+    if: github.repository_owner == 'hynek' && github.event.action == 'published'
     runs-on: ubuntu-latest
     needs: build-package
 
+    permissions:
+      id-token: write
+
     steps:
       - name: Download packages built by build-and-inspect-python-package
         uses: actions/download-artifact@v4
@@ -65,3 +76,5 @@ jobs:
 
       - name: Upload package to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          attestations: true

.github/workflows/zizmor.yml

@@ -0,0 +1,38 @@
+# https://github.com/woodruffw/zizmor
+name: GitHub Actions Security Analysis with Zizmor
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["*"]
+
+permissions:
+  contents: read
+
+
+jobs:
+  zizmor:
+    name: Zizmor latest via Cargo
+    runs-on: ubuntu-latest
+    permissions:
+      security-events: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+      - name: Setup Rust
+        uses: actions-rust-lang/setup-rust-toolchain@v1
+      - name: Get zizmor
+        run: cargo install zizmor
+      - name: Run zizmor
+        run: zizmor --format sarif . > results.sarif
+      - name: Upload SARIF file
+        uses: github/codeql-action/upload-sarif@v3
+        with:
+          # Path to SARIF file relative to the root of the repository
+          sarif_file: results.sarif
+          # Optional category for the results
+          # Used to differentiate multiple results for one commit
+          category: zizmor