Gating network behind compile flag

tools/color.py

@@ -1,6 +1,7 @@
 import argparse
 import csv
-import os
+
+from tools.writeifchanged import write_if_changed
 
 parser = argparse.ArgumentParser(description="Color CSV to .h defines")
 parser.add_argument("--csv", required=True, help="Path to color CSV file")
@@ -79,6 +80,4 @@ for line in "\n".join(js).rstrip().splitlines():
 out[-1] = out[-1].rstrip(" \\")
 out.append("")
 
-os.makedirs(os.path.dirname(args.output), exist_ok=True)
-with open(args.output, "w", encoding="utf-8") as f:
-  f.write("\n".join(out))
+write_if_changed(args.output, "\n".join(out))