fix nested components

Author: jul-sh

.gitignore

@@ -3,3 +3,4 @@ sources/workdir
 sources/output
 .aider*
 .venv
+__pycache__/

sitecustomize.py

@@ -0,0 +1,13 @@
+"""
+Repository-local Python site customization.
+
+We patch FontTools script metadata so FontBakery's glyphset language checks
+do not crash on newer gflanguages entries that reference the non-standard
+\"Berf\" script (Beria Erfe). The value is intentionally mapped to itself so
+glyphsets that rely on standard scripts will simply skip it.
+"""
+
+from fontTools.unicodedata import Scripts
+
+# Ensure unknown script code from gflanguages does not raise KeyError in glyphsets
+Scripts.NAMES.setdefault("Berf", "Berf")