clean: Longer but easier to maintain for me.

.local/bin/clean

@@ -1,5 +1,31 @@
-#!/bin/sh
+#!/usr/bin/env python3.12
+import sys
+from pathlib import Path
+import shutil
 
-find -maxdepth 4 \
-    \( -name '*~' -o -name '#*#' -o -name .tox -o -name .mypy_cache \) \
-    -print0 | xargs -0 rm -vfr
+
+def find(path, maxdepth=3, prune=()):
+    for child in path.iterdir():
+        if child.name in prune:
+            continue
+        yield child
+        if child.is_dir() and maxdepth > 0:
+            yield from find(child, prune=prune, maxdepth=maxdepth - 1)
+
+
+def rm(path):
+    print(f"rm -fr {path}")
+    if "-n" in sys.argv:
+        return
+    if path.is_file():
+        path.unlink()
+    else:
+        shutil.rmtree(path)
+
+
+PRUNE = {"backup", "auto-save-list"}
+TO_DROP = {Path(".tox"), Path(".mypy_cache"), Path(".envrc"), Path(".venv"), Path("*~"), Path("#*#")}
+
+for file in find(Path("."), prune=PRUNE):
+    if any(file.match(pat) for pat in TO_DROP):
+        rm(file)