diff --git a/modules/programs/ghostty.nix b/modules/programs/ghostty.nix
index 5b8dcd3..748a801 100644
--- a/modules/programs/ghostty.nix
+++ b/modules/programs/ghostty.nix
@@ -9,7 +9,7 @@
 
   flake.modules.homeManager.ghostty = { config, pkgs, lib, ... }:
   let
-    ghosttyPackage = pkgs.symlinkJoin {
+    ghosttyX11 = pkgs.symlinkJoin {
       name = "ghostty-x11";
       paths = [ (config.lib.nixGL.wrap pkgs.ghostty) ];
       nativeBuildInputs = [ pkgs.makeWrapper ];
@@ -24,6 +24,10 @@
       TERMINAL = "ghostty";
     };
 
+    home.packages = with pkgs; [
+      inputs.self.packages.${system}.ghosttyGPUCheck
+    ];
+
     targets.genericLinux.nixGL = {
       packages = inputs.nixgl.packages.${pkgs.stdenv.hostPlatform.system};
       defaultWrapper = "mesa";
@@ -33,7 +37,7 @@
     programs.ghostty = {
       enable = true;
       enableZshIntegration = true;
-      package = ghosttyPackage;
+      package = ghosttyX11;
       settings = {
         command = "TERM=xterm-256color ${lib.getExe pkgs.zsh}";
         font-size = 12;
@@ -72,7 +76,7 @@
     # https://github.com/ghostty-org/ghostty/discussions/3763#discussioncomment-11699970
     xdg.desktopEntries."com.mitchellh.ghostty" =
     let
-      ghosttyCmd = lib.getExe ghosttyPackage;
+      ghosttyCmd = lib.getExe ghosttyX11;
     in
     {
       name = "Ghostty";
@@ -100,4 +104,16 @@
       };
     };
   };
+
+  perSystem = { system, pkgs, lib, ... }: {
+    packages.ghosttyGPUCheck = pkgs.writeShellApplication {
+      name = "ghostty-gpu-check";
+      runtimeInputs = with pkgs; [
+        bash
+        gnugrep
+        procps # for pgrep, pidof, etc.
+      ];
+      text = builtins.readFile ../../scripts/ghostty-gpu-check.sh;
+    };
+  };
 }
diff --git a/scripts/ghostty-gpu-check.sh b/scripts/ghostty-gpu-check.sh
new file mode 100755
index 0000000..b8274b9
--- /dev/null
+++ b/scripts/ghostty-gpu-check.sh
@@ -0,0 +1,212 @@
+#!/usr/bin/env bash
+set -u
+
+# --- pretty output helpers ---
+BOLD="\033[1m"
+DIM="\033[2m"
+GREEN="\033[32m"
+YELLOW="\033[33m"
+RED="\033[31m"
+CYAN="\033[36m"
+RESET="\033[0m"
+
+section() {
+  echo
+  echo -e "${BOLD}${CYAN}==> $1${RESET}"
+}
+
+ok()   { echo -e "${GREEN}[OK]${RESET} $1"; }
+warn() { echo -e "${YELLOW}[WARN]${RESET} $1"; }
+err()  { echo -e "${RED}[ERR]${RESET} $1"; }
+info() { echo -e "${DIM}$1${RESET}"; }
+
+has_cmd() {
+  command -v "$1" >/dev/null 2>&1
+}
+
+found_process=0
+found_render_node=0
+found_gpu_libs=0
+software_rasterizer=0
+
+section "1) Find a running Ghostty process"
+info "What this does: tries the same two process lookups you ran (pgrep and pidof)."
+info "Good outcome: at least one PID is returned."
+
+echo -e "${DIM}\$ pgrep -x ghostty${RESET}"
+PGREP_OUT="$(pgrep -x ghostty || true)"
+if [[ -n "${PGREP_OUT}" ]]; then
+  echo "${PGREP_OUT}"
+else
+  echo "<no output>"
+fi
+
+echo -e "${DIM}\$ pidof ghostty${RESET}"
+PIDOF_OUT="$(pidof ghostty || true)"
+if [[ -n "${PIDOF_OUT}" ]]; then
+  echo "${PIDOF_OUT}"
+else
+  echo "<no output>"
+fi
+
+if [[ -n "${PGREP_OUT}" || -n "${PIDOF_OUT}" ]]; then
+  found_process=1
+  ok "Ghostty process detected."
+else
+  warn "No Ghostty process found yet by either command."
+fi
+
+section "2) Set GHOSTTY_PID"
+info "What this does: picks one Ghostty PID for all later checks."
+info "Good outcome: GHOSTTY_PID is set to a valid running Ghostty process."
+
+# Prefer step-1 outputs first (avoids re-running lookups that may block on some systems).
+GHOSTTY_PID=""
+if [[ -n "${PGREP_OUT}" ]]; then
+  GHOSTTY_PID="$(printf '%s\n' "${PGREP_OUT}" | head -n1)"
+  info "Using PID from step-1 pgrep output."
+elif [[ -n "${PIDOF_OUT}" ]]; then
+  GHOSTTY_PID="$(printf '%s\n' "${PIDOF_OUT}" | awk '{print $1}')"
+  info "Using PID from step-1 pidof output."
+else
+  echo -e "${DIM}\$ pgrep -xo ghostty${RESET}"
+  if has_cmd timeout; then
+    PGREP_RAW="$(timeout 3s pgrep -xo ghostty 2>&1)"
+    pgrep_status=$?
+    if (( pgrep_status == 124 )); then
+      warn "pgrep timed out after 3 seconds."
+    fi
+  else
+    PGREP_RAW="$(pgrep -xo ghostty 2>&1)"
+    pgrep_status=$?
+  fi
+
+  if (( pgrep_status == 0 )); then
+    GHOSTTY_PID="$(printf '%s\n' "${PGREP_RAW}" | head -n1)"
+  else
+    if [[ -n "${PGREP_RAW}" ]]; then
+      warn "[pgrep] ${PGREP_RAW}"
+    fi
+    warn "pgrep exit code: ${pgrep_status} (1 usually means no matching process)."
+
+    echo -e "${DIM}\$ pidof ghostty${RESET}"
+    PIDOF_RAW="$(pidof ghostty 2>&1)"
+    pidof_status=$?
+
+    if (( pidof_status == 0 )); then
+      GHOSTTY_PID="$(printf '%s\n' "${PIDOF_RAW}" | awk '{print $1}')"
+    else
+      if [[ -n "${PIDOF_RAW}" ]]; then
+        warn "[pidof] ${PIDOF_RAW}"
+      fi
+      warn "pidof exit code: ${pidof_status}"
+      GHOSTTY_PID=""
+    fi
+  fi
+fi
+
+if [[ -z "${GHOSTTY_PID}" ]]; then
+  err "Could not find a running Ghostty process to inspect."
+  echo "Open Ghostty, then run this script again."
+  exit 1
+fi
+
+export GHOSTTY_PID
+ok "Using GHOSTTY_PID=${GHOSTTY_PID}"
+
+section "3) Check for an open GPU render device"
+info "What this does: inspects /proc/<pid>/fd for /dev/dri entries used for rendering."
+info "Good outcome: see /dev/dri/renderD* (for example renderD128)."
+
+if has_cmd rg; then
+  echo -e "${DIM}\$ sudo ls -l /proc/\$GHOSTTY_PID/fd | rg dri${RESET}"
+  DRI_LINES="$(sudo ls -l "/proc/${GHOSTTY_PID}/fd" | rg dri || true)"
+else
+  warn "'rg' not found; using grep instead"
+  echo -e "${DIM}\$ sudo ls -l /proc/\$GHOSTTY_PID/fd | grep dri${RESET}"
+  DRI_LINES="$(sudo ls -l "/proc/${GHOSTTY_PID}/fd" | grep dri || true)"
+fi
+
+if [[ -n "${DRI_LINES}" ]]; then
+  echo "${DRI_LINES}"
+else
+  echo "<no dri-related file descriptors found>"
+fi
+
+if echo "${DRI_LINES}" | grep -q '/dev/dri/renderD'; then
+  found_render_node=1
+  ok "Found /dev/dri/renderD*: strong sign Ghostty is using GPU render infrastructure."
+elif [[ -n "${DRI_LINES}" ]]; then
+  warn "Found /dev/dri entries, but no renderD node in this output."
+else
+  warn "No /dev/dri entries seen for this process."
+fi
+
+section "4) Check mapped graphics libraries"
+info "What this does: reads process memory mappings for GL/EGL/Vulkan/Mesa libraries."
+info "Good outcome: matches like libGL, libEGL, libvulkan, mesa, libgbm, libgallium appear."
+
+echo -e "${DIM}\$ sudo grep -E 'libEGL|libGL|libvulkan|mesa' /proc/\$GHOSTTY_PID/maps | head -n 30${RESET}"
+LIB_LINES="$(sudo grep -E 'libEGL|libGL|libvulkan|mesa' "/proc/${GHOSTTY_PID}/maps" | head -n 30 || true)"
+
+if [[ -n "${LIB_LINES}" ]]; then
+  echo "${LIB_LINES}"
+  found_gpu_libs=1
+  ok "Graphics stack libraries are mapped into Ghostty."
+else
+  echo "<no matches>"
+  warn "No GL/EGL/Vulkan/Mesa mappings matched this filter."
+fi
+
+section "5) Optional probe for software rasterizer vs hardware driver hints"
+info "What this does: scans for common software rasterizer strings (llvmpipe/swrast) and driver names."
+info "Good outcome: no llvmpipe/swrast matches. Driver-name matches can vary by stack."
+
+echo -e "${DIM}\$ sudo grep -Ei 'llvmpipe|swrast|iris|radeonsi|nouveau|zink|nvidia|_dri\\.so' /proc/\$GHOSTTY_PID/maps${RESET}"
+PROBE_LINES="$(sudo grep -Ei 'llvmpipe|swrast|iris|radeonsi|nouveau|zink|nvidia|_dri\.so' "/proc/${GHOSTTY_PID}/maps" || true)"
+
+if [[ -n "${PROBE_LINES}" ]]; then
+  echo "${PROBE_LINES}"
+  if echo "${PROBE_LINES}" | grep -Eiq 'llvmpipe|swrast'; then
+    software_rasterizer=1
+    warn "Software rasterizer markers detected (llvmpipe/swrast)."
+  else
+    ok "Driver-related markers detected and no software rasterizer markers found."
+  fi
+else
+  ok "No probe matches found. This is often fine; absence of llvmpipe/swrast is usually good."
+fi
+
+section "Final interpretation"
+if (( found_process == 1 )); then
+  ok "Process check: PASS"
+else
+  warn "Process check: no process found initially (script still proceeded once PID was resolved)."
+fi
+
+if (( found_render_node == 1 )); then
+  ok "Render node check: PASS (/dev/dri/renderD* present)"
+else
+  warn "Render node check: no explicit renderD node found"
+fi
+
+if (( found_gpu_libs == 1 )); then
+  ok "Graphics library check: PASS"
+else
+  warn "Graphics library check: no matches"
+fi
+
+if (( software_rasterizer == 1 )); then
+  warn "Software rasterizer check: POSSIBLE software rendering path"
+else
+  ok "Software rasterizer check: no llvmpipe/swrast markers detected"
+fi
+
+echo
+if (( found_render_node == 1 && found_gpu_libs == 1 && software_rasterizer == 0 )); then
+  ok "Overall: strong evidence Ghostty is using GPU acceleration."
+else
+  warn "Overall: mixed signals. Consider running a live GPU activity monitor during terminal redraw stress."
+fi
+
+ok "Summary complete for PID ${GHOSTTY_PID}"