--- old/./.hgignore	2018-01-25 22:27:16.860570303 +0100
+++ new/./.hgignore	2018-01-25 22:27:16.672569371 +0100
@@ -1,4 +1,5 @@
 ^build/
+^.build/
 ^dist/
 ^.idea/
 nbproject/private/