_oasis_remove_.ml and OASIS version of setup.ml

[gildor478]

Pre-emptive bug, I don't yet have the issue.

I see in commit 77b07e3, that you have removed the generation of oasis_remove.ml (which is a good thing).

The problem is that '-C' is only fixed with OASIS 0.4.7 and you may have a setup.ml generated with former version (e.g. 0.4.6).

Can you check the version of OASIS used to generate setup.ml and issue an error if < 0.4.7 ?

To check the version

$ ocaml setup.ml -version

[Chris00]

Good remark. Since I use the OASIS lib, I guess it is possible to have that info from the library, right?

[Chris00]

I could detect that because the module Compat_0_4 is present, right? At the moment, I do not execute anything from the tarball and I would like it to stay that way.

[gildor478]

No. This is embedded into one of the record field deep inside the auto-generated setup.ml.

This is actually unfortunate, because I know it would be useful to auto-extract it, without running setup.ml.

1. I think a quick fix for oasis2opam is to check with ocaml setup.ml -version.
2. You have unstructured data in setup.ml which reads like "Regenerated by OASIS (.*)" , but it is unstructured data, although you can probably easily extract it with a regex.
3. l and I have created a feature request to implement what is needed (metadata in setup.ml) in the next version of OASIS.

[Chris00]

I used 2. because I would prefer not to have to trust the setup.ml file. :-)