;; This test erroneously modify one of its dependencies
(alias
 (name   x)
 (deps   data (universe))
 (action (system "\| echo hello >> data
                 "\| # To force the mtime to change:
                 "\| # https://github.com/ocaml/dune/pull/1359
                 "\| touch -t 01010000 data
                 )))