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scripts/run_xephyr.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
+DISPLAY_NUM=":2"
+
+if [ -z "${DISPLAY:-}" ]; then
+  echo "Host DISPLAY is not set. Start this from an active X11 session (for example, a terminal inside your desktop session)."
+  exit 1
+fi
+
+if ! command -v Xephyr >/dev/null 2>&1; then
+  echo "Xephyr not found. Install xorg-server-xephyr first."
+  exit 1
+fi
+
+if ! command -v xterm >/dev/null 2>&1; then
+  echo "xterm not found. Install xterm first."
+  exit 1
+fi
+
+echo "Building dxdwm..."
+cargo build --manifest-path "$ROOT_DIR/Cargo.toml"
+
+echo "Starting Xephyr on $DISPLAY_NUM..."
+Xephyr "$DISPLAY_NUM" -screen 1280x720 -ac &
+XEPHYR_PID=$!
+
+cleanup() {
+  kill "$XEPHYR_PID" >/dev/null 2>&1 || true
+}
+trap cleanup EXIT INT TERM
+
+sleep 1
+
+echo "Starting dxdwm in nested display..."
+DISPLAY="$DISPLAY_NUM" "$ROOT_DIR/target/debug/dxdwm" &
+DWM_PID=$!
+
+sleep 1
+
+DISPLAY="$DISPLAY_NUM" xterm &
+DISPLAY="$DISPLAY_NUM" xterm &
+
+wait "$DWM_PID"
+