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hyprland-alt-toggle.nix (1808B)

      1 { pkgs, ... }:
      2 
      3 let
      4   hyprland-alt-toggle = pkgs.writeShellScriptBin "hyprland-alt-toggle" ''
      5     set -euo pipefail
      6 
      7     STATE_FILE="''${XDG_RUNTIME_DIR:-/tmp}/hyprland-alt-toggle.state"
      8 
      9     DRAG_KEYS="ALT + mouse:272"
     10     RESIZE_KEYS="ALT + mouse:273"
     11 
     12     hl_eval() {
     13         # Runs a Lua expression via hyprctl eval and surfaces errors.
     14         local expr="$1"
     15         local out
     16         if ! out="$(hyprctl eval "$expr" 2>&1)"; then
     17             echo "Error running: $expr" >&2
     18             echo "$out" >&2
     19             exit 1
     20         fi
     21         if [[ "$out" != "ok" ]]; then
     22             echo "Warning: unexpected response for: $expr" >&2
     23             echo "$out" >&2
     24         fi
     25     }
     26 
     27     do_unbind() {
     28         echo "Unbinding $DRAG_KEYS (drag) and $RESIZE_KEYS (resize)..."
     29         hl_eval "hl.unbind('$DRAG_KEYS')"
     30         hl_eval "hl.unbind('$RESIZE_KEYS')"
     31         touch "$STATE_FILE"
     32         echo "Done. Alt+Click is now free for other apps."
     33     }
     34 
     35     do_rebind() {
     36         echo "Rebinding $DRAG_KEYS to window.drag and $RESIZE_KEYS to window.resize..."
     37         hl_eval "hl.bind('$DRAG_KEYS', hl.dsp.window.drag(), { mouse = true })"
     38         hl_eval "hl.bind('$RESIZE_KEYS', hl.dsp.window.resize(), { mouse = true })"
     39         rm -f "$STATE_FILE"
     40         echo "Done. Hyprland's Alt+Click window drag/resize is restored."
     41     }
     42 
     43     case "''${1:-toggle}" in
     44         unbind)
     45             do_unbind
     46             ;;
     47         rebind)
     48             do_rebind
     49             ;;
     50         toggle)
     51             if [[ -f "$STATE_FILE" ]]; then
     52                 do_rebind
     53             else
     54                 do_unbind
     55             fi
     56             ;;
     57         *)
     58             echo "Usage: $0 [unbind|rebind|toggle]" >&2
     59             exit 1
     60             ;;
     61     esac
     62   '';
     63 in
     64 {
     65   environment.systemPackages = [ hyprland-alt-toggle ];
     66 }