" Always use "sh", don't use the value of "$SHELL".
set shell=sh
-" While some tests overwrite $HOME to prevent them from polluting user files,
-" we need to remember the original value so that we can tell external systems
-" where to ask about their own user settings.
-let g:tester_HOME = $HOME
+" Only when the +eval feature is present.
+if 1
+ " While some tests overwrite $HOME to prevent them from polluting user files,
+ " we need to remember the original value so that we can tell external systems
+ " where to ask about their own user settings.
+ let g:tester_HOME = $HOME
+endif
source setup.vim