Phase 9: Add native processors and reproducible Linux release tooling

tools/uninstall.py

@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+"""Remove only this source version's installed files; never recurse directories."""
+import argparse
+from pathlib import Path
+import stat
+
+
+def owned_files(source):
+    files = ['lib/libxtc.a', 'lib/pkgconfig/xtc.pc', 'bin/xtc-check', 'bin/xtc',
+             'share/applications/xtc.desktop', 'share/licenses/xtc/LICENSE',
+             'share/doc/xtc/README.md']
+    files += ['include/xtc/' + p.name for p in sorted((source / 'include/xtc').glob('*.h'))]
+    files += ['share/doc/xtc/' + p.name for p in sorted((source / 'docs').glob('*.md'))]
+    files += ['share/doc/xtc/decisions/' + p.name for p in sorted((source / 'docs/decisions').glob('*.md'))]
+    return files
+
+
+def uninstall(root, source):
+    if not root.is_absolute() or root == Path('/'):
+        raise ValueError('Installation root must be absolute and not /')
+    files = [root / name for name in owned_files(source)]
+    # Preflight before changing anything; never unlink a directory at a file path.
+    for path in files:
+        try:
+            mode = path.lstat().st_mode
+        except FileNotFoundError:
+            continue
+        if not (stat.S_ISREG(mode) or stat.S_ISLNK(mode)):
+            raise ValueError(f'Refusing non-file: {path}')
+    for path in files:
+        path.unlink(missing_ok=True)
+    parents = {parent for path in files for parent in path.parents if parent == root or root in parent.parents}
+    for parent in sorted(parents, key=lambda p: len(p.parts), reverse=True):
+        try:
+            parent.rmdir()
+        except (FileNotFoundError, OSError):
+            pass  # Shared/nonempty directories remain untouched.
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument('--root', type=Path, required=True)
+    args = parser.parse_args()
+    uninstall(args.root, Path(__file__).resolve().parent.parent)