Thank you Doctor Zizmor!

.github/workflows/ci.yml

@@ -4,12 +4,11 @@ name: CI
 on:
   push:
     branches: [main]
-    tags: ["*"]
   pull_request:
   workflow_dispatch:
 
 env:
-  FORCE_COLOR: "1"  # Make tools pretty.
+  FORCE_COLOR: "1" # Make tools pretty.
   PIP_DISABLE_PIP_VERSION_CHECK: "1"
   PIP_NO_PYTHON_VERSION_WARNING: "1"
 
@@ -39,6 +38,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
+          persist-credentials: false
 
       - uses: hynek/build-and-inspect-python-package@v2
         id: baipp
@@ -53,11 +53,16 @@ jobs:
     name: Tests & Mypy API on ${{ matrix.python-version }}
     runs-on: ubuntu-latest
     needs: build-package
+
     strategy:
+      fail-fast: false
       matrix:
         # Created by the build-and-inspect-python-package action above.
         python-version: ${{ fromJson(needs.build-package.outputs.python-versions) }}
 
+    env:
+      PYTHON: ${{ matrix.python-version }}
+
     steps:
       - name: Download pre-built packages
         uses: actions/download-artifact@v4
@@ -75,10 +80,9 @@ jobs:
 
       - name: Run tests
         run: >
-          uvx --with tox-uv
-          tox run
+          uvx --with tox-uv tox run
           --installpkg dist/*.whl
-          -f py$(echo ${{ matrix.python-version }} | tr -d .)
+          -f py${PYTHON//./}
 
       - name: Upload coverage data
         uses: actions/upload-artifact@v4
@@ -90,32 +94,35 @@ jobs:
 
       - name: Check public API with Mypy
         run: >
-          uvx --with tox-uv
-          tox run
+          uvx --with tox-uv tox run
           --installpkg dist/*.whl
           -e mypy-api
 
 
   coverage:
     name: Ensure 100% test coverage
-    needs: tests
     runs-on: ubuntu-latest
+    needs: tests
+    if: always()
 
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: actions/setup-python@v5
         with:
           python-version-file: .python-version-default
       - uses: hynek/setup-cached-uv@v2
 
-      - uses: actions/download-artifact@v4
+      - name: Download coverage data
+        uses: actions/download-artifact@v4
         with:
           pattern: coverage-data-*
           merge-multiple: true
 
-      - name: Combine coverage & fail if it's <100%
+      - name: Combine coverage and fail if it's <100%.
         run: |
-          uv tool install coverage[toml]
+          uv tool install coverage
 
           coverage combine
           coverage html --skip-covered --skip-empty
@@ -166,6 +173,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: actions/setup-python@v5
         with:
           python-version-file: .python-version-default
@@ -208,10 +217,10 @@ jobs:
 
     needs:
       - coverage
-      - docs
-      - install-dev
       - lint
       - mypy-pkg
+      - docs
+      - install-dev
 
     runs-on: ubuntu-latest
 

.github/workflows/codeql-analysis.yml

@@ -2,10 +2,6 @@
 name: CodeQL
 
 on:
-  push:
-    branches: [main]
-  pull_request:
-    branches: [main]
   schedule:
     - cron: "41 3 * * 6"
 
@@ -29,6 +25,8 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v3

.github/workflows/pypi-package.yml

@@ -1,5 +1,5 @@
 ---
-name: Build & maybe upload PyPI package
+name: Build & upload PyPI package
 
 on:
   push:
@@ -10,21 +10,21 @@ 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:
@@ -34,10 +34,13 @@ jobs:
   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 == 'pyca' && 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
@@ -54,10 +57,13 @@ jobs:
   release-pypi:
     name: Publish released package to pypi.org
     environment: release-pypi
-    if: github.event.action == 'published'
+    if: github.repository_owner == 'pyca' && 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

.github/workflows/zizmor.yml

@@ -0,0 +1,37 @@
+# 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