cppo -V was added in 1.1.0
CI failure: https://opam.ci.ocaml.org/github/ocaml/opam-repository/commit/95be4980c8ce70abf50c3de92bbe25484dd66746/variant/opam-2.1,compilers,4.03,gettext-camomile.0.4.2,lower-bounds
Marek Kubica 3 years ago b3803742 4eb3aa3c
··· 18 18 depends: [ 19 19 "ocaml" {>= "4.03.0" & < "5.0"} 20 20 "dune" {>= "1.11.0"} 21 21 - "cppo" {build} 21 21 + "cppo" {build & >= "1.1.0"} 22 22 "fileutils" 23 23 "ounit" {with-test & > "2.0.8" & < "2.2.6"} 24 24 ]