MPR#6890: provide use_ocamlfind as a tag

[damiendoligez]

PR transferred from https://caml.inria.fr/mantis/view.php?id=6890
[original reporter: @bobzhang]

it would be nice that I can write

true: use_ocamlfind

so I don't need type ocamlbuild -use-ocamlfind everytime, thanks -- Hongbo

[bluddy]

Honestly, this should already be a default. Any package not using ocamlfind by default is not living in the modern Ocaml world. If something as small as this can't be fixed due to backwards compatibility, that's a real problem, and it suggests maybe forking is needed.

[dbuenzli]

If something as small as this can't be fixed due to backwards compatibility, that's a real problem, and it suggests maybe forking is needed.

So you are going to be the brave soul who maintains ocamlbuild ? If not please keep these kind of comments for yourself, they achieve absolutely nothing except annoy current maintainers.

I think this can be closed in favour of #48 which also has a link to a mantis issue where this was tried at some point (I don't remember exactly why it was reverted). @gasche's comment related to the semantics of _tags in MPR6890 is right in my opinion.

[whitequark]

Triage: is it even possible to meaningfully implement that? _tags is read much later after the command-line options are parsed, and the global state in Options is long recorded elsewhere by that point. In my understanding this (i.e. true: use_ocamlfind) request is too complex to implement for its value.

[gasche]

Let's close this in favor of simply changing the default, as discussed (now) in #214.