esy error

backtrace.txt

$ esy
info esy 0.6.0 (using esy.json)
info checking https://github.com/ocaml/opam-repository for updates...
info checking https://github.com/esy-ocaml/esy-opam-override for updates...
info resolving esy packages: done
esy: internal error, uncaught exception:
     (Failure
       "inconsistent state: found a package not in the cudf version map @opam/mysql@link:../upstream/ocaml-mysql")
     Raised at file "pervasives.ml", line 32, characters 17-33
     Called from file "esy-solve/Universe.re", line 638, characters 22-189
     Called from file "list.ml", line 82, characters 20-23
     Called from file "list.ml", line 82, characters 20-23
     Called from file "esy-solve/Universe.re", line 669, characters 6-52
     Called from file "list.ml", line 100, characters 12-15
     Called from file "map.ml", line 291, characters 20-25
     Called from file "map.ml", line 291, characters 10-18
     Called from file "esy-solve/Universe.re", line 692, characters 2-107
     Called from file "esy-solve/Solver.re", line 635, characters 4-59
     Called from file "esy-solve/Solver.re", line 1027, characters 6-228
     Called from file "src/core/lwt.ml", line 1866, characters 23-26
     Re-raised at file "src/core/lwt.ml", line 2998, characters 20-29
     Called from file "src/unix/lwt_main.ml", line 26, characters 8-18
     Called from file "esy-lib/Cli.re", line 263, characters 9-28
     Called from file "cmdliner_term.ml", line 25, characters 19-24
     Called from file "cmdliner.ml", line 25, characters 27-34
     Called from file "cmdliner.ml", line 116, characters 32-39

esy.json

{
  "name": "esy test",
  "dependencies": {
    "@opam/mysql": "*"
  },
  "resolutions": {
    "@opam/mysql": "link:../upstream/ocaml-mysql"
  }
}

mariadb-connector-c-package.json

{
  "name": "esy-mariadb-connector-c",
  "version": "3.1.0000",
  "description": "Mirror of mariadb-connector-c",
  "license": "MIT",
  "esy": {
    "build": [
        ["bash", "-c", "#{os == 'windows' ? './esy/configure-windows.sh' : './esy/configure.sh'}"],
        ["./esy/build.sh"]
    ],
    "buildsInSource": "_build"
  },
  "dependencies": {
      "esy-cmake": "^0.3.2"
  },
  "devDependencies": {
      "esy-cmake": "^0.3.2"
  }
}

ocaml-mysql-package.json

{
  "source": "./mysql.opam",
  "override": {
    "buildsInSource": "unsafe",
    "dependencies": {
      "mariadb-connector-c": "*"
    },
    "resolutions": {
      "mariadb-connector-c": "link:../mariadb-connector-c"
    }
  }
}