/usr/bin/ant will put dozens of jars on the classpath, including a
rhino.jar that breaks the build
--- rhino/build.xml.orig 2021-11-11 17:25:07.284267174 +0100
+++ rhino/build.xml 2021-11-11 17:25:38.689242510 +0100
@@ -33,6 +33,7 @@
+
ef='/cgit/'>index : lo/core