make niri config templateable

config/niri/generate_kdl.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+. "$HOME/.cache/wal/colors.sh"
+
+echo "$color1"
+
+export focus_active="$color2"
+#export focus_inactive="$FOCUS_INACTIVE"
+#export border_active="$BORDER_ACTIVE"
+#export border_inactive="$BORDER_INACTIVE"
+#export border_urgent="$BORDER_URGENT"
+
+# for simplicity, using envsubst:
+envsubst <$HOME/.config/niri/config.template.kdl >$HOME/.config/niri/config.kdl
+
+# optionally force Niri to reload or redraw (if needed)
+#niri msg action redraw