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coinduction 1.4 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                 8.5.1       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: "damien.pous@ens-lyon.fr"
homepage: "https://github.com/damien-pous/coinduction"
dev-repo: "git+https://github.com/damien-pous/coinduction.git"
bug-reports: "https://github.com/damien-pous/coinduction/issues"
license: "LGPL-3.0-or-later"
synopsis: "A library and plugin for doing proofs by (enhanced) coinduction"
description: """
Coinductive predicates are greatest fixpoints of monotone functions.
The `companion' makes it possible to enhance the associated coinduction scheme.
This library provides a formalisation on enhancements based on the companion, as well as tactics in making it straightforward to perform proofs by enhanced coinduction.
"""
build: [
  [make "-j%{jobs}%" ]
]
install: [make "install"]
depends: [
  "ocaml"
  "coq" {>= "8.14" & < "8.15~"}
]
tags: [
  "keyword:coinduction"
  "keyword:up to techniques"
  "keyword:companion"
  "logpath:Coinduction"
]
authors: [
  "Damien Pous"
]
url {
  src:
    "https://github.com/damien-pous/coinduction/archive/v1.4.tar.gz"
  checksum: "sha512=6c82abfc6db1d0d51473d298037681cdae3e2a3a8090e00ad124f517314ca209ba3109fb853487de0f8b6511b293b940c8292e12124072131864b368c387fcb6"
}

Lint

Command: true
Return code: 0

Dry install 🏜️

Dry install with the current Coq version:

Command

opam install -y --show-action coq-coinduction.1.4 coq.8.5.1

Return code

5120

Output

[NOTE] Package coq is already installed (current version is 8.5.1).
The following dependencies couldn't be met:
  - coq-coinduction -> coq >= 8.14 -> ocaml >= 4.05.0
      base of this switch (use `--unlock-base' to force)
  - coq-coinduction -> coq >= 8.14 -> 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-coinduction.1.4
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