[lower-bounds] octavius lower bound needed for doc-ock

[mseri]

Error

#=== ERROR while compiling doc-ock.1.2.0 ======================================#
# context              2.1.0 | linux/x86_64 | ocaml-base-compiler.4.06.1 | file:///home/opam/opam-repository
# path                 ~/.opam/4.06/.opam-switch/build/doc-ock.1.2.0
# command              ~/.opam/opam-init/hooks/sandbox.sh build jbuilder build -p doc-ock -j 31
# exit-code            1
# env-file             ~/.opam/log/doc-ock-23-f45f53.env
# output-file          ~/.opam/log/doc-ock-23-f45f53.out
### output ###
#       ocamlc src/.docOck.objs/docOckAttrs.{cmo,cmt} (exit 2)
# (cd _build/default && /home/opam/.opam/4.06/bin/ocamlc.opt -w -40 -g -bin-annot -I src/.docOck.objs -I /home/opam/.opam/4.06/lib/ocaml/compiler-libs -I /home/opam/.opam/4.06/lib/octavius -no-alias-deps -o src/.docOck.objs/docOckAttrs.cmo -c -impl src/docOckAttrs.pp.ml)
# File "src/docOckAttrs.ml", line 478, characters 4-13:
# Error: This variant pattern is expected to have type Octavius.Types.tag
#        The constructor Canonical does not belong to type Octavius.Types.tag
#     ocamlopt src/.docOck.objs/docOckAttrs.{cmx,o} (exit 2)
# (cd _build/default && /home/opam/.opam/4.06/bin/ocamlopt.opt -w -40 -g -I src/.docOck.objs -I /home/opam/.opam/4.06/lib/ocaml/compiler-libs -I /home/opam/.opam/4.06/lib/octavius -no-alias-deps -o src/.docOck.objs/docOckAttrs.cmx -c -impl src/docOckAttrs.pp.ml)
# File "src/docOckAttrs.ml", line 478, characters 4-13:
# Error: This variant pattern is expected to have type Octavius.Types.tag
#        The constructor Canonical does not belong to type Octavius.Types.tag

Action performed:

dune-release.1.3.0

# Run eval $(opam env) to update the current shell environment
The following actions will be performed:
  - remove    ocaml-migrate-parsetree  2.2.0               [conflicts with dune]
  - remove    stdlib-shims             0.3.0               [conflicts with dune]
  - install   conf-m4                  1                   [required by ocamlfind]
  - remove    seq                      0.2.2               [conflicts with dune]
  - downgrade opam-file-format         2.1.3 to 2.0~alpha5
  - remove    odoc-parser              0.9.0               [conflicts with dune, result]
  - downgrade ocamlbuild               0.14.0 to 0.9.1
  - remove    opam-depext              1.1.5
  - remove    ocamlfind-secondary      1.9.1               [conflicts with ocamlfind]
  - downgrade result                   1.5 to 1.0
  - downgrade dune                     2.9.1 to 1.0.0
  - downgrade ocamlfind                1.9.1 to 1.7.3
  - remove    ocaml-secondary-compiler 4.08.1-1
  - install   jbuilder                 transition          [required by odoc]
  - install   ocp-build                1.99.18-beta        [required by opam-core]
  - install   menhir                   20160303            [required by doc-ock-xml]
  - install   base-bytes               base                [required by astring]
  - downgrade topkg                    1.0.4 to 0.9.0      [uses ocamlfind, ocamlbuild, result]
  - downgrade ocamlgraph               2.0.0 to 1.8.8      [uses ocamlfind]
  - downgrade re                       1.10.3 to 1.5.0     [uses ocamlbuild, ocamlfind]
  - downgrade cppo                     1.6.8 to 1.4.1      [uses ocamlbuild, ocamlfind]
  - install   xmlm                     1.3.0               [required by odoc]
  - install   octavius                 0.1.0               [required by doc-ock]
  - downgrade rresult                  0.6.0 to 0.4.0      [uses ocamlfind, ocamlbuild, result]
  - downgrade cmdliner                 1.0.4 to 1.0.0      [uses ocamlfind, ocamlbuild, result]
  - downgrade astring                  0.8.5 to 0.8.2      [uses ocamlbuild, ocamlfind]
  - install   doc-ock                  1.2.0               [required by odoc]
  - downgrade uutf                     1.0.2 to 1.0.1      [uses ocamlbuild, ocamlfind]
  - downgrade fmt                      0.8.9 to 0.8.4      [uses ocamlfind, ocamlbuild, result]
  - downgrade fpath                    0.7.3 to 0.7.0      [uses ocamlfind, ocamlbuild, result]
  - install   doc-ock-xml              1.2.0               [required by odoc]
  - install   jsonm                    1.0.1               [required by opam-core]
  - downgrade tyxml                    4.5.0 to 4.2.0      [uses ocamlbuild, ocamlfind]         For tyxml's ppx, please install tyxml-ppx.
  - downgrade logs                     0.7.0 to 0.6.2      [uses ocamlfind, ocamlbuild, result]
  - downgrade opam-core                2.1.0 to 2.0~alpha5 [uses ocamlfind]
  - install   doc-ock-html             1.2.0               [required by odoc]
  - downgrade bos                      0.2.0 to 0.1.0      [uses ocamlbuild, ocamlfind]
  - downgrade opam-format              2.1.0 to 2.0~alpha5 [uses opam-file-format]
  - downgrade odoc                     2.0.0 to 1.2.0      [uses ocamlfind, result]
  - downgrade opam-repository          2.1.0 to 2.0~alpha5 [uses opam-core]
  - downgrade opam-state               2.1.0 to 2.0~alpha5 [uses opam-core]
===== 11 to install | 23 to downgrade | 7 to remove =====

Logs from: https://opam.ci.ocaml.org/github/ocaml/opam-repository/commit/d5595405d0d76cb0e4d77da53bc55aaab20d1071/variant/opam-2.1,compilers,4.06,dune-release.1.3.0,lower-bounds
Seen on #19706

[mseri]

Needs a lower bound to octavius 0.2.0.