[opam-devel] `opam config list` doesn't show base-unix on Debian

[Ashish Agarwal]

On most systems, I get:

$ opam config list | grep base-unix
base-unix:installed                      true
base-unix:enable                         enable


But on Debian, I'm getting:

$ opam config list | grep base-unix
(* no output *)


However, it seems the Unix library is installed:

$ ocaml

        OCaml version 4.01.0

# #load "unix.cma";;
# Unix.getenv;;
- : string -> string = <fun>


But opam seems not to have it in its list:

$ opam list
No packages found.


Also, this happens:

$ opam switch
4.01.0  C 4.01.0       Official 4.01.0 release

$ opam switch 4.01.0
[WARNING] Some of the compiler base packages are not installed. You should
run:

    $ opam install base-threads base-bigarray base-unix

Odd, but okay, I try it:

$ opam install base-threads base-bigarray base-unix
The following actions will be performed:
 - install   base-threads.base
 - install   base-bigarray.base
 - install   base-unix.base

=== 3 to install ===

=-=-=-=-=-=-=-=-=-=-=-=- Synchronizing package archives
-=-=-=-=-=-=-=-=-=-=-=-=

=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Installing packages
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Installing base-bigarray.base.
Installing base-threads.base.
Installing base-unix.base.

Now opam does list the packages:
$ opam list
Installed packages for 4.01.0:
base-bigarray  base  Bigarray library distributed with the OCaml compiler
base-threads   base  Threads library distributed with the OCaml compiler
base-unix      base  Unix library distributed with the OCaml compiler

But the config variables still don't get fixed:

$ opam config list | grep base-unix
(* no output *)

This of course leads to other problems, such as lwt.unix doesn't get
installed.
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