--- a/tests/test-simple4server.t	Tue Mar 07 12:04:05 2017 +0100
+++ b/tests/test-simple4server.t	Tue Mar 07 12:10:05 2017 +0100
@@ -1,3 +1,5 @@
+
+  $ . ${TESTDIR}/testlib/pythonpath.sh
 
   $ cat >> $HGRCPATH <<EOF
   > [defaults]
@@ -20,12 +22,20 @@
   >    hg ci -m "add $1"
   > }
 
-setup repo
 
   $ hg init server
+
+Try the multiple ways to setup the extension
+
+  $ hg -R server log --config 'extensions.evolve.serveronly='
+  $ hg -R server log --config "extensions.evolve.serveronly=${SRCDIR}/hgext3rd/evolve/serveronly.py"
+  $ PYTHONPATH=$HGTEST_ORIG_PYTHONPATH hg -R server log --config "extensions.evolve.serveronly=${SRCDIR}/hgext3rd/evolve/serveronly.py"
+
+setup repo
+
   $ echo "[extensions]" >> ./server/.hg/hgrc
-  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/serveronly.py" >> ./server/.hg/hgrc
-  $ hg serve -R server -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log
+  $ echo "evolve.serveronly=" >> ./server/.hg/hgrc
+  $ hg serve -R server -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log --traceback
   $ cat hg.pid >> $DAEMON_PIDS
 
   $ hg clone http://localhost:$HGPORT/ client
@@ -34,7 +44,7 @@
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cat ./errors.log
   $ echo "[extensions]" >> ./client/.hg/hgrc
-  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> ./client/.hg/hgrc
+  $ echo "evolve=" >> ./client/.hg/hgrc
   $ cp -r client other
 
 Smoke testing