[build] Split stdlib to it's own opam package.

We introduce a new package structure for Coq:

- `coq-core`: Coq's OCaml tools code and plugins
- `coq-stdlib`: Coq's stdlib [.vo files]
- `coq`: meta-package that pulls `coq-{core,stdlib}`

This has several advantages, in particular it allows to install Coq
without the stdlib which is useful in several scenarios, it also open
the door towards a versioning of the stdlib at the package level.

The main user-visible change is that Coq's ML development files now
live in `$lib/coq-core`, for compatibility in the regular build we
install a symlink and support both setups for a while.

Note that plugin developers and even `coq_makefile` should actually
rely on `ocamlfind` to locate Coq's OCaml libs as to be more robust.

There is a transient state where we actually look for both
`$coqlib/plugins` and `$coqlib/../coq-core/plugins` as to support
the non-ocamlfind plus custom variables.

This will be much improved once #13617 is merged (which requires this
PR first), then, we will introduce a `coq.boot` library so finally
`coqdep`, `coqchk`, etc... can share the same path setup code.

IMHO the plan should work fine.

1 files changed, 1 insertions, 1 deletions

diff --git a/dev/shim/dune b/dev/shim/dune
index 8006c629ed..e4cc7699f0 100644
--- a/dev/shim/dune
+++ b/dev/shim/dune
@@ -26,7 +26,7 @@
  (targets coqbyte-prelude)
  (deps
   %{bin:coqtop.byte}
-  %{lib:coq.kernel:../../stublibs/dllbyterun_stubs.so}
+  %{lib:coq-core.kernel:../../stublibs/dllbyterun_stubs.so}
   %{project_root}/theories/Init/Prelude.vo)
  (action
   (with-stdout-to %{targets}