Add checks for whitespaces and executable scripts

.github/workflows/code-checkers.yml

@@ -8,6 +8,24 @@ env:
   PREK_COLOR: "always"
 
 jobs:
+  whitespace:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        with:
+          persist-credentials: false
+      - uses: ./.github/actions/uv-setup
+      - run: prek -a trailing-whitespace end-of-file-fixer
+
+  executables:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        with:
+          persist-credentials: false
+      - uses: ./.github/actions/uv-setup
+      - run: prek -a check-shebang-scripts-are-executable check-executables-have-shebangs
+
   mypy:
     runs-on: ubuntu-latest
     steps:

.github/workflows/zizmor.yml

@@ -18,4 +18,4 @@ jobs:
       - uses: ./.github/actions/uv-setup
       - run: zizmor --color=always .
         env:
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }} 
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.pre-commit-config.yaml

@@ -1,4 +1,14 @@
 repos:
+  - repo: builtin
+    hooks:
+      # Trim trailing whitespace
+      - id: trailing-whitespace
+      # Ensure newline at EOF
+      - id: end-of-file-fixer
+      # Ensures that (non-binary) files with a shebang are executable
+      - id: check-shebang-scripts-are-executable
+      # Ensures that (non-binary) executables have a shebang
+      - id: check-executables-have-shebangs
   - repo: local
     hooks:
       - id: "ruff"

pyproject.toml

@@ -82,7 +82,7 @@ ignore = [
 pydocstyle.convention = "pep257"
 
 [tool.ruff.lint.extend-per-file-ignores]
-# Pytest fixtures are often flagged as unused imports (F401) or 
+# Pytest fixtures are often flagged as unused imports (F401) or
 # redefined variables (F811) because they are injected by name.
 "tests/**/*.py" = [
   "F401",  # F401 unused-import

scripts/install_xcpng.py

@@ -1,6 +1,6 @@
+#!/usr/bin/env python3
 from __future__ import annotations
 
-#!/usr/bin/env python3
 import argparse
 import atexit
 import logging

tests/install/README.md

@@ -68,7 +68,7 @@ The above command instructs `pytest` to:
 * run the test sequences as defined by the specified `.lst` files
   (which were specially written to chain an installation, an upgrade
   to same version, and a restore, all using a single nightly image)
-* specify 
+* specify
 * to save detailed logs in a file, while during execution only
   high-level progress messages are shown to avoid flooding