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Krzysztof kuhy Rudnicki
6154dc09bf
The three Python packages pinned ruff twice at different versions: requirements.txt at 0.16.7, .pre-commit-config.yaml at v0.15.2. Only the older one ever ran, so `select = ["ALL"]` was enforced two minor versions behind. Measured before aligning: v0.15.2 reports 0 findings, every 0.16.x reports CPY001 on each file -- 70 crdt-sync, 23 freedays, 71 gatelock, and no other rule. Resolved by adding the notice rather than ignoring the rule, so the gate keeps its teeth. Two gatelock modules sat at exactly the 250-line cap, so a one-line header tipped them to 251. Both are split along a real seam rather than shaved: _widget_fills.py colour arithmetic over LockConfig, no tkinter import _surfaces_focus.py selects among existing surfaces, never mutates them The focus split keeps _surfaces.py's documented containment (it stays the only module that creates, moves or destroys windows), and the static guard in test_recovery_invariants.py globs _surfaces*.py, so the new sibling is covered with no list to extend. widgets.py re-exports the fills helpers, which keeps gatelock.widgets the single public surface its tests import. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019kMvSMtsVMB3d2uoZ56pbp
39 lines
1.3 KiB
Python
39 lines
1.3 KiB
Python
# Copyright (c) 2026 Krzysztof Rudnicki
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"""VT-switch (Ctrl+Alt+Fn) disable/restore via setxkbmap.
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Disabling VT switching is what stops a locked window from being bypassed by
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dropping to a TTY. Best-effort: silently does nothing if setxkbmap isn't
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installed, matching the behavior of every implementation this was ported from.
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"""
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from __future__ import annotations
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import logging
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import shutil
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import subprocess
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_logger = logging.getLogger(__name__)
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def disable_vt_switching() -> bool:
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"""Best-effort disable of Ctrl+Alt+Fn VT switching.
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Returns:
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True if setxkbmap was found and the disable command ran (the caller
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should later call :func:`restore_vt_switching`); False if setxkbmap
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is unavailable and VT switching could not be touched.
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"""
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setxkbmap = shutil.which("setxkbmap")
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if setxkbmap is None:
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_logger.warning("setxkbmap not found; VT switching stays enabled")
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return False
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subprocess.run([setxkbmap, "-option", "srvrkeys:none"], check=False)
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return True
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def restore_vt_switching() -> None:
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"""Re-enable VT switching. Safe to call even if it was never disabled."""
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setxkbmap = shutil.which("setxkbmap")
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if setxkbmap is not None:
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subprocess.run([setxkbmap, "-option", ""], check=False)
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