# Caps Escape Design

## Facts

- Commit `250b0b71f` removed `services.xserver.xkb.options` from the shared host module.
- The removed option was `caps:escape_shifted_capslock`.
- That XKB option maps Caps Lock to Escape.
- Shift+Caps Lock still enables Caps Lock.
- The shared host module configures Neogaia, Zeus, and Pikachu.
- Zeus has QMK firmware that provides equivalent keyboard behavior.
- Neogaia and Zeus enable `modules.host.cachyos` and `modules.desktop`.
- Pikachu enables neither module.
- `configs/nixos/hosts/neogaia/default.nix` directly sets Neogaia-specific hardware, networking, desktop application, and Waybar settings.
- The current configuration has no Caps Lock or Escape remapping.
- This session runs on Zeus, not Neogaia.

## Design Tree

- Restore Caps Lock behavior
  - Scope the configuration
    - Configure Neogaia only. ✓
  - Select the mapping behavior.
    - Restore `caps:escape_shifted_capslock`. ✓
    - Set `services.xserver.xkb.options` in `configs/nixos/hosts/neogaia/default.nix`. ✓
  - Define validation for Neogaia.
    - Run static checks and manually verify both keys after deployment. ✓
    - Stop after source and static validation. ✓

## Settled Decisions

1. Configure the mapping on Neogaia only.
2. Restore `caps:escape_shifted_capslock`.
3. Set `services.xserver.xkb.options` directly in Neogaia's host configuration.
4. Run static checks and manually verify both keys on Neogaia after deployment.
5. Stop after source and static validation.

## Frontier

None.