diff --git a/desktopenvs/hyprlua/hypr-usr/input-device-exceptions.lua b/desktopenvs/hyprlua/hypr-usr/input-device-exceptions.lua
new file mode 100644
index 0000000..f045cc8
--- /dev/null
+++ b/desktopenvs/hyprlua/hypr-usr/input-device-exceptions.lua
@@ -0,0 +1,28 @@
+-- Device-specific input overrides — settings here take precedence over global input config.
+hl.device({
+    name = "zsa-technology-labs-moonlander-mark-i-keyboard",
+    kb_layout  = "de",
+    kb_variant = "",
+    kb_model   = "",
+    kb_options = "",
+    kb_rules   = "",
+    repeat_rate  = 15,
+    repeat_delay = 750,
+    sensitivity  = 0,
+})
+hl.device({
+    name = "logitech-pro-2-mouse-1",
+    sensitivity   = 0,
+    accel_profile = "",
+    left_handed   = false, -- left-handed mode handled on the mouse's onboard memory
+    natural_scroll = false,
+    scroll_points = "",
+})
+hl.device({
+    name = "logitech-g903-ls-1",
+    sensitivity   = 0,
+    accel_profile = "",
+    left_handed   = false,
+    natural_scroll = false,
+    scroll_points = "",
+})
diff --git a/desktopenvs/hyprlua/hypr-usr/input.lua b/desktopenvs/hyprlua/hypr-usr/input.lua
index cc1f6c6..618c643 100644
--- a/desktopenvs/hyprlua/hypr-usr/input.lua
+++ b/desktopenvs/hyprlua/hypr-usr/input.lua
@@ -14,30 +14,5 @@ hl.config({
         },
     },
 })
-hl.device({
-    name = "zsa-technology-labs-moonlander-mark-i-keyboard",
-    kb_layout  = "de",
-    kb_variant = "",
-    kb_model   = "",
-    kb_options = "",
-    kb_rules   = "",
-    repeat_rate  = 15,
-    repeat_delay = 750,
-    sensitivity  = 0,
-})
-hl.device({
-    name = "logitech-pro-2-mouse-1",
-    sensitivity   = 0,
-    accel_profile = "",
-    left_handed   = false, -- left-handed mode handled on the mouse's onboard memory
-    natural_scroll = false,
-    scroll_points = "",
-})
-hl.device({
-    name = "logitech-g903-ls-1",
-    sensitivity   = 0,
-    accel_profile = "",
-    left_handed   = false,
-    natural_scroll = false,
-    scroll_points = "",
-})
+
+require("input-device-exceptions")
diff --git a/desktopenvs/hyprlua/hypr-usr/mk-device-exception.sh b/desktopenvs/hyprlua/hypr-usr/mk-device-exception.sh
new file mode 100755
index 0000000..3f8c53c
--- /dev/null
+++ b/desktopenvs/hyprlua/hypr-usr/mk-device-exception.sh
@@ -0,0 +1,171 @@
+#!/usr/bin/env bash
+# TUI for creating/updating device-specific Hyprland input overrides.
+# Usage: mk-device-exception.sh <target-lua-file>
+set -euo pipefail
+
+die() { printf 'error: %s\n' "$*" >&2; exit 1; }
+
+[[ $# -eq 1 ]] || die "Usage: ${0##*/} <target-lua-file>"
+target="$1"
+
+command -v hyprctl &>/dev/null || die "hyprctl not found"
+command -v dialog  &>/dev/null || die "dialog not found"
+command -v jq      &>/dev/null || die "jq not found"
+
+# ---------- device selection ----------
+
+devices=$(hyprctl devices -j)
+entries=$(jq -r '
+    (.keyboards[]?.name | "keyboard\t" + .),
+    (.mice[]?.name     | "mouse\t"    + .)
+' <<<"$devices")
+
+[[ -z "$entries" ]] && die "No keyboard or mouse devices found"
+
+if command -v fzf &>/dev/null; then
+    selected=$(printf '%s\n' "$entries" \
+        | fzf --prompt="Select device: " --height=~10 --with-nth=2.. --delimiter=$'\t')
+else
+    echo "Select a device:" >&2
+    IFS=$'\n'
+    select selected in $entries; do [[ -n "$selected" ]] && break; done
+    unset IFS
+fi
+
+[[ -z "$selected" ]] && exit 1
+
+type=${selected%%$'\t'*}
+name=${selected#*$'\t'}
+
+# ---------- parse existing field value from target file ----------
+# Returns the Lua literal for the field (e.g. `"de"`, `15`, `false`).
+
+get_field() {
+    local field="$1" default="$2"
+    [[ -f "$target" ]] || { printf '%s' "$default"; return; }
+    awk -v dev="$name" -v fld="$field" -v def="$default" '
+        /^hl\.device\(\{/   { blk=""; in_blk=1; matched=0 }
+        in_blk              { blk = blk $0 "\n" }
+        in_blk && /name = / { if ($0 ~ "\"" dev "\"") matched=1 }
+        in_blk && /^\}\)/   {
+            if (matched) {
+                n = split(blk, lines, "\n")
+                for (i = 1; i <= n; i++) {
+                    line = lines[i]
+                    sub(/^[[:space:]]+/, "", line)            # strip indentation
+                    if (line ~ "^" fld "[[:space:]]*=") {
+                        sub(/^[^=]+=/, "", line)              # drop "fieldname = "
+                        sub(/^[[:space:]]*/, "", line)        # strip leading space
+                        sub(/[[:space:]]*,.*$/, "", line)     # drop trailing comma and any inline comment
+                        print line; exit
+                    }
+                }
+                print def; exit
+            }
+            in_blk = 0
+        }
+    ' "$target"
+}
+
+# Strip surrounding Lua string quotes for display in form ("de" -> de).
+unquote() { local v="$1"; v="${v#\"}"; v="${v%\"}"; printf '%s' "$v"; }
+
+# ---------- show form and collect values ----------
+
+case "$type" in
+keyboard)
+    v_layout=$(unquote "$(get_field kb_layout '"de"')")
+    v_variant=$(unquote "$(get_field kb_variant '""')")
+    v_model=$(unquote "$(get_field kb_model '""')")
+    v_options=$(unquote "$(get_field kb_options '""')")
+    v_rules=$(unquote "$(get_field kb_rules '""')")
+    v_rate=$(get_field repeat_rate 0)
+    v_delay=$(get_field repeat_delay 0)
+    v_sens=$(get_field sensitivity 0)
+
+    # dialog writes its TUI to stdout (/dev/tty) and the result to stderr.
+    values=$(dialog \
+        --title "Keyboard exception: $name" \
+        --form "" 16 74 8 \
+        "kb_layout"    1 1 "$v_layout"   1 17 42 0 \
+        "kb_variant"   2 1 "$v_variant"  2 17 42 0 \
+        "kb_model"     3 1 "$v_model"    3 17 42 0 \
+        "kb_options"   4 1 "$v_options"  4 17 42 0 \
+        "kb_rules"     5 1 "$v_rules"    5 17 42 0 \
+        "repeat_rate"  6 1 "$v_rate"     6 17 10 0 \
+        "repeat_delay" 7 1 "$v_delay"    7 17 10 0 \
+        "sensitivity"  8 1 "$v_sens"     8 17 10 0 \
+        2>&1 >/dev/tty) || exit 0
+
+    mapfile -t vals <<< "$values"
+    new_block="hl.device({
+    name = \"$name\",
+    kb_layout  = \"${vals[0]:-}\",
+    kb_variant = \"${vals[1]:-}\",
+    kb_model   = \"${vals[2]:-}\",
+    kb_options = \"${vals[3]:-}\",
+    kb_rules   = \"${vals[4]:-}\",
+    repeat_rate  = ${vals[5]:-0},
+    repeat_delay = ${vals[6]:-0},
+    sensitivity  = ${vals[7]:-0},
+})"
+    ;;
+
+mouse)
+    v_sens=$(get_field sensitivity 0)
+    v_accel=$(unquote "$(get_field accel_profile '""')")
+    v_left=$(get_field left_handed false)
+    v_natural=$(get_field natural_scroll false)
+    v_scroll=$(unquote "$(get_field scroll_points '""')")
+
+    values=$(dialog \
+        --title "Mouse exception: $name" \
+        --form "" 13 74 5 \
+        "sensitivity"    1 1 "$v_sens"    1 20 20 0 \
+        "accel_profile"  2 1 "$v_accel"   2 20 20 0 \
+        "left_handed"    3 1 "$v_left"    3 20 10 0 \
+        "natural_scroll" 4 1 "$v_natural" 4 20 10 0 \
+        "scroll_points"  5 1 "$v_scroll"  5 20 20 0 \
+        2>&1 >/dev/tty) || exit 0
+
+    mapfile -t vals <<< "$values"
+    new_block="hl.device({
+    name = \"$name\",
+    sensitivity    = ${vals[0]:-0},
+    accel_profile  = \"${vals[1]:-}\",
+    left_handed    = ${vals[2]:-false},
+    natural_scroll = ${vals[3]:-false},
+    scroll_points  = \"${vals[4]:-}\",
+})"
+    ;;
+esac
+
+# ---------- replace or append in target file ----------
+
+[[ -f "$target" ]] || touch "$target"
+
+# Remove the existing block for this device (no-op if not present).
+tmp=$(mktemp)
+awk -v dev="$name" '
+    /^hl\.device\(\{/   { blk = $0 "\n"; in_blk=1; matched=0; next }
+    in_blk              {
+        blk = blk $0 "\n"
+        if (/name = / && ($0 ~ "\"" dev "\"")) matched=1
+        if (/^\}\)/) {
+            if (!matched) printf "%s", blk
+            in_blk=0; blk=""
+        }
+        next
+    }
+    { print }
+' "$target" > "$tmp"
+mv "$tmp" "$target"
+
+# Append the new block, separated by a blank line if the file is non-empty.
+if [[ -s "$target" ]]; then
+    [[ "$(tail -c 1 "$target")" != $'\n' ]] && printf '\n' >> "$target"
+    printf '\n' >> "$target"
+fi
+printf '%s\n' "$new_block" >> "$target"
+
+printf 'Written to %s\n' "$target"