nixos config

modules/scripts/display-set.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+# Applies a monitor mode/position/scale/transform immediately (hyprctl)
+# AND persists it into ~/.config/hypr/display.conf, which hyprland.conf
+# sources — without that file, hyprland.conf's generic fallback rule
+# ("monitor = , preferred, auto, 1") is the only thing on record, and
+# ANYTHING that makes Hyprland re-evaluate monitor state (observed: even
+# changing the cursor theme via `hyprctl setcursor` does this) reapplies
+# that fallback, silently dropping back to "preferred" refresh rate
+# instead of whatever the user actually picked.
+set -euo pipefail
+
+mon="${1:?usage: display-set <monitor> <mode> <x> <y> <scale> [transform]}"
+mode="${2:?mode required}"
+x="${3:?x required}"
+y="${4:?y required}"
+scale="${5:?scale required}"
+transform="${6:-0}"
+
+descriptor="$mon,$mode,${x}x${y},$scale"
+[ "$transform" != "0" ] && descriptor="$descriptor,transform,$transform"
+
+conf="$HOME/.config/hypr/display.conf"
+mkdir -p "$(dirname "$conf")"
+touch "$conf"
+
+line="monitor = $descriptor"
+if grep -q "^monitor = $mon," "$conf" 2>/dev/null; then
+    tmp=$(mktemp)
+    awk -v prefix="monitor = $mon," -v newline="$line" '
+        index($0, prefix) == 1 { print newline; next } { print }
+    ' "$conf" > "$tmp"
+    mv "$tmp" "$conf"
+else
+    echo "$line" >> "$conf"
+fi
+
+hyprctl keyword monitor "$descriptor" > /dev/null