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mathcomp-word 2.0 Not compatible 👼

Context

# Packages matching: installed
# Name              # Installed # Synopsis
base-bigarray       base
base-num            base        Num library distributed with the OCaml compiler
base-threads        base
base-unix           base
camlp5              7.14        Preprocessor-pretty-printer of OCaml
conf-findutils      1           Virtual package relying on findutils
conf-perl           2           Virtual package relying on perl
coq                 8.5.2       Formal proof management system
num                 0           The Num library for arbitrary-precision integer and rational arithmetic
ocaml               4.03.0      The OCaml compiler (virtual package)
ocaml-base-compiler 4.03.0      Official 4.03.0 release
ocaml-config        1           OCaml Switch Configuration
# opam file:
opam-version: "2.0"
maintainer: "pierre-yves@strub.nu"
homepage: "https://github.com/jasmin-lang/coqword"
bug-reports: "https://github.com/jasmin-lang/coqword/issues"
dev-repo: "git+https://github.com/jasmin-lang/coqword.git"
license: "MIT"
synopsis: "Yet Another Coq Library on Machine Words"
build: [ "dune" "build" "-p" name "-j" jobs ]
depends: [
  "dune" {>= "2.8"}
  "coq" {>= "8.12"}
  "coq-mathcomp-ssreflect" {>= "1.12" & < "1.16~"}
  "coq-mathcomp-algebra"
]
conflicts: [
  "coq-mathcomp-zify"
]
tags: [
  "category:Computer Science/Data Types and Data Structures"
  "keyword:machine words"
  "logpath:mathcomp.word"
  "date:2022-09-27"
]
authors: ["Pierre-Yves Strub"]
url {
  src: "https://github.com/jasmin-lang/coqword/archive/refs/tags/v2.0.tar.gz"
  checksum: "sha512=07bb65131cccf64df60d256cec695a60052cd3d2de00c2be90e51e601b7cdc89c6fbc7fcf0a346849f9f4d5d46901b208a65bde97bb5dfe8e35b2612afd5c66a"
}

Lint

Command: true
Return code: 0

Dry install 🏜️

Dry install with the current Coq version:

Command

opam install -y --show-action coq-mathcomp-word.2.0 coq.8.5.2

Return code

5120

Output

[NOTE] Package coq is already installed (current version is 8.5.2).
The following dependencies couldn't be met:
  - coq-mathcomp-word -> coq >= 8.12 -> ocaml >= 4.05.0
      base of this switch (use `--unlock-base' to force)
  - coq-mathcomp-word -> coq >= 8.12 -> coq-core -> ocaml >= 4.09.0
      base of this switch (use `--unlock-base' to force)
No solution found, exiting

Dry install without Coq/switch base, to test if the problem was incompatibility with the current Coq/OCaml version:

Command: opam remove -y coq; opam install -y --show-action --unlock-base coq-mathcomp-word.2.0
Return code: 0

Install dependencies

Command: true
Return code: 0
Duration: 0 s

Install 🚀

Command: true
Return code: 0
Duration: 0 s

Installation size

No files were installed.

Uninstall 🧹

Command: true
Return code: 0
Missing removes: none
Wrong removes: none