# Generate all single-root four message thread structures. We'll use
# this for multiple tests below.
-THREADS=$(python ${TEST_DIRECTORY}/gen-threads.py 4)
+THREADS=$($NOTMUCH_PYTHON ${TEST_DIRECTORY}/gen-threads.py 4)
nthreads=$(wc -l <<< "$THREADS")
test_begin_subtest "Messages with one parent get linked in all delivery orders"