if you emerge dev-ml/dune:2 with dev-ml/csexp-1.5.2 it fail The error : File "dune-project", line 1, characters 11-14: 1 | (lang dune 3.4) ^^^ Error: Version 3.4 of the dune language is not supported. if you emerge dune:3 with dev-ml/csexp-1.5.2 it works => the dependancy for dev-ml/csexp-1.5.2 is >=dev-ml/dune-3 PS: dev-ml/csexp-1.5.1 works fine with dev-ml/dune:2
>>> Compiling source in /var/tmp/portage/dev-ml/csexp-1.5.2/work/csexp-1.5.2 ... * dune build @install --display=short --profile release -j 60 File "dune-project", line 1, characters 11-14: 1 | (lang dune 3.4) ^^^ Error: Version 3.4 of the dune language is not supported. Supported versions of this extension in version 3.4 of the dune language: - 1.0 to 1.12 - 2.0 to 2.9 * ERROR: dev-ml/csexp-1.5.2::gentoo failed (compile phase):