➜  pwd
/tmp/aaa bbb
➜  dune init library lib1 --inline-tests && dune build && echo '(cram enable)' >> dune-project && echo "  $ echo 1" > a.t && dune runtest
Success: initialized library component named lib1
Info: Creating file dune-project with this contents:
| (lang dune 2.8)
          sh (internal) (exit 1)
(cd _build/.sandbox/adbc1e20125dd3d84ef2b4a89103342d/default && /bin/sh /tmp/dune.cram.186a8ca.t/main.sh)
/tmp/dune.cram.186a8ca.t/main.sh: 5: printf: bbb/_build/.sandbox/adbc1e20125dd3d84ef2b4a89103342d/default:$TMPDIR=/tmp/dune.cram.186a8ca.t/tmp: expected numeric value