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bignums 9.0.0+coq8.17 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                 8.7.1+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
ocamlfind           1.9.6       A library manager for OCaml
# opam file:
opam-version: "2.0"
maintainer: "pierre.roux@onera.fr"
homepage: "https://github.com/coq-community/bignums"
dev-repo: "git+https://github.com/coq-community/bignums.git"
bug-reports: "https://github.com/coq-community/bignums/issues"
license: "LGPL-2.1-only"
synopsis: "Bignums, the Coq library of arbitrarily large numbers"
description: """
This Coq library provides BigN, BigZ, and BigQ that used to
be part of the standard library."""
build: [make "-j%{jobs}%"]
install: [make "install"]
depends: [
  "ocaml"
  "coq" {>= "8.17" & < "8.18~"}
]
tags: [
  "category:Miscellaneous/Coq Extensions"
  "category:Mathematics/Arithmetic and Number Theory/Number theory"
  "category:Mathematics/Arithmetic and Number Theory/Rational numbers"
  "keyword:integer numbers"
  "keyword:rational numbers"
  "keyword:arithmetic"
  "keyword:arbitrary-precision"
  "logpath:Bignums"
  "date:2023-03-15"
]
authors: [
  "Laurent Théry"
  "Benjamin Grégoire"
  "Arnaud Spiwack"
  "Evgeny Makarov"
  "Pierre Letouzey"
]
url {
  src: "https://github.com/coq/bignums/archive/v9.0.0+coq8.17.tar.gz"
  checksum: "sha512=90c12576c6eb0e040f5f41e91618b9ceb53c3c0313a92214ad9f253a1898ad443fb137efefce07f06aab88e971e7488636822201723aa10e153364052165da7c"
}

Lint

Command: true
Return code: 0

Dry install 🏜️

Dry install with the current Coq version:

Command

opam install -y --show-action coq-bignums.9.0.0+coq8.17 coq.8.7.1+2

Return code

5120

Output

[NOTE] Package coq is already installed (current version is 8.7.1+2).
The following dependencies couldn't be met:
  - coq-bignums -> coq >= 8.17 -> 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-bignums.9.0.0+coq8.17
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