apitest: Provide OTTER_APITEST_START_DIR

Nothing uses this yet, nor, it appears, is going to, but it may come
in useful in the future, so let's keep it.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/apitest/apitest.rs b/apitest/apitest.rs
index d1db9bad7fda3e2595a4544e164ed900199f9b3a..bee1d168922b9a02c8f027305a8ca749a15f0ecc 100644 (file)
--- a/apitest/apitest.rs
+++ b/apitest/apitest.rs
@@ -582,6 +582,7 @@ pub fn prepare_tmpdir<'x>(opts: &'x Opts, mut current_exe: &'x str) -> DirSubst
 
   env::set_var("HOME", &abstmp);
   env::set_var("TMPDIR", &abstmp);
+  env::set_var("OTTER_APITEST_START_DIR", &start_dir);
   for v in "http_proxy https_proxy XAUTHORITY CDPATH \
             SSH_AGENT_PID SSH_AUTH_SOCK WINDOWID WWW_HOME".split(' ')
   {